PropertyTag Values (Compact 2013)
3/26/2014
This feature is being deprecated for this release. Refer to this component: Windows Imaging Component.
Several image file formats enable you to store metadata along with an image. Metadata is information about an image; for example, title, width, camera model, and artist.
The Imaging API provides a uniform way of storing and retrieving metadata from image files in the following formats:
- Tagged Image File Format (TIFF)
- JPEG
- Portable Network Graphics (PNG)
- Exchangeable Image File (EXIF)
When working with the Imaging API, a piece of metadata is called a property item, and an individual property item is identified by a numerical constant called a property tag.
You can store and retrieve metadata by calling the IImageDecoder::SetPropertyItem and IImageDecoder::GetPropertyItem methods, and you do not need to be concerned with the details of how a particular file format stores that metadata.
The following topics list and describe the property items supported by the Imaging API. The descriptions are brief and general so they apply to a variety of file formats.
For a detailed description of how a property item is used in a particular file format, see the specification for that file format.
The following list shows the values used to identify image properties in a PropertyItem object.
The Exchangeable Image File (EXIF) format is a Japan Electronic Industry Development Association (JEIDA) standard, revised June 1998 as version 2.1. Portions of the EXIF specification are used with permission of JEIDA.
PropertyTagArtist
Null-terminated character string that specifies the name of the person who created the image.
Tag 0x013B Type PropertyTagTypeASCII Count Length of the string including the NULL terminator
PropertyTagBitsPerSample
Number of bits per color component. See also PropertyTagSamplesPerPixel.
Tag 0x0102 Type PropertyTagTypeShort Count Number of samples (components) per pixel
PropertyTagCellHeight
Height of the dithering or halftoning matrix.
Tag 0x0109 Type PropertyTagTypeShort Count 1
PropertyTagCellWidth
Width of the dithering or halftoning matrix.
Tag 0x0108 Type PropertyTagTypeShort Count 1
PropertyTagChrominanceTable
Chrominance table.
The luminance table and the chrominance table are used to control JPEG quality.
A valid luminance or chrominance table has 64 entries of type PropertyTagTypeShort.
If an image has a luminance table or a chrominance table, it must have both tables.
Tag 0x5091Type PropertyTagTypeShort Count 64
PropertyTagColorMap
Color palette (lookup table) for a palette-indexed image.
Tag 0x0140 Type PropertyTagTypeShort Count Number of 16-bit words required for the palette
PropertyTagColorTransferFunction
Table of values that specify color transfer functions.
Tag 0x501A Type PropertyTagTypeUndefined Count Any
PropertyTagCompression
Compression scheme used for the image data.
Tag 0x0103 Type PropertyTagTypeShort Count 1
PropertyTagCopyright
Null-terminated character string that contains copyright information.
Tag 0x8298 Type PropertyTagTypeASCII Count Length of the string including the NULL terminator
PropertyTagDateTime
Date and time the image was created.
Tag 0x0132 Type PropertyTagTypeASCII Count 20
PropertyTagDocumentName
Null-terminated character string that specifies the name of the document from which the image was scanned.
Tag 0x010D Type PropertyTagTypeASCII Count Length of the string including the NULL terminator
PropertyTagDotRange
Color component values that correspond to a 0 percent dot and a 100 percent dot.
Tag 0x0150 Type PropertyTagTypeByte or PropertyTagTypeShort Count 2 or 2×PropertyTagSamplesPerPixel
PropertyTagEquipMake
Null-terminated character string that specifies the manufacturer of the equipment used to record the image.
Tag 0x010F Type PropertyTagTypeASCII Count Length of the string including the NULL terminator
PropertyTagEquipModel
Null-terminated character string that specifies the model name or model number of the equipment used to record the image.
Tag 0x0110 Type PropertyTagTypeASCII Count Length of the string including the NULL terminator
PropertyTagExifAperture
Lens aperture.
The unit is the APEX value.
Tag 0x9202 Type PropertyTagTypeRational Count 1
PropertyTagExifBrightness
Brightness value.
The unit is the APEX value. Ordinarily it is given in the range of -99.99 to 99.99.
Tag 0x9203 Type PropertyTagTypeSRational Count 1
PropertyTagExifCfaPattern
The color filter array (CFA) geometric pattern of the image sensor when a one-chip color area sensor is used. It does not apply to all sensing methods.
Tag 0xA302 Type PropertyTagTypeUndefined Count Any
PropertyTagExifColorSpace
Color space specifier.
Normally sRGB (=1) is used to define the color space based on the PC monitor conditions and environment.
If a color space other than sRGB is used, Uncalibrated (=0xFFFF) is set.
Image data recorded as Uncalibrated can be treated as sRGB when it is converted to FlashPix.
PropertyTagExifColorSpace Value |
Description |
|---|---|
0x1 |
The sRGB color space. |
0xFFFF |
Uncalibrated. |
Other |
Reserved. |
Tag 0xA001 Type PropertyTagTypeShort Count 1
PropertyTagExifCompBPP
Information specific to compressed data. The compression mode used for a compressed image is indicated in unit BPP.
Tag 0x9102 Type PropertyTagTypeRational Count 1
PropertyTagExifCompConfig
Information specific to compressed data. The channels of each component are arranged in order from the first component to the fourth.
For uncompressed data, the data arrangement is given in the PropertyTagPhotometricInterp tag. However, because PropertyTagPhotometricInterp can only express the order of Y, Cb, and Cr, this property is provided for cases when compressed data uses components other than Y, Cb, and Cr and to support other sequences.
Component Identifier |
Description |
|---|---|
0 |
The color component does not exist. |
1 |
The luminance (Y) color component. |
2 |
The blue chrominance (Cb) color component. |
3 |
The red chrominance (Cr) color component. |
4 |
The red (R) color component. |
5 |
The green (G) color component. |
6 |
The blue (B) color component. |
Other |
Reserved. |
The default setting for the PropertyTagExifCompConfig value is '4 5 6 0' for uncompressed RGB data an '1 2 3 0' for all other cases.
Tag 0x9101 Type PropertyTagTypeUndefined Count 4
PropertyTagExifDTDigitized
Date and time when the image was stored as digital data.
The format is YYYY:MM:DD HH:MM:SS, with time shown in 24-hour format and the date and time separated by one blank character (0x2000).
The character string length is 20 bytes including the NULL terminator.
When the field is empty, it is treated as unknown.
Tag 0x9004 Type PropertyTagTypeASCII Count 20
PropertyTagExifDTDigSS
Null-terminated character string that specifies a fraction of a second for the PropertyTagExifDTDigitized tag.
Tag 0x9292 Type ASCII Count Length of the string including the NULL terminator
PropertyTagExifDTOrig
Date and time when the original image data was generated.
For a digital camera, the date and time when the picture was taken.
The format is YYYY:MM:DD HH:MM:SS with time shown in 24-hour format and the date and time separated by one blank character (0x2000).
The character string length is 20 bytes including the NULL terminator.
When the field is empty, it is treated as unknown.
Tag 0x9003 Type PropertyTagTypeASCII Count 20
PropertyTagExifDTOrigSS
Null-terminated character string that specifies a fraction of a second for the PropertyTagExifDTOrig tag.
Tag 0x9291 Type PropertyTagTypeASCII Count Length of the string including the NULL terminator
PropertyTagExifDTSubsec
Null-terminated character string that specifies a fraction of a second for the PropertyTagDateTime tag.
Tag 0x9290Type PropertyTagTypeASCII Count Length of the string including the NULL terminator
PropertyTagExifExposureBias
Exposure bias.
The unit is the APEX value.
Ordinarily it is given in the range -99.99 to 99.99.
Tag 0x9204 Type PropertyTagTypeSRational Count 1
PropertyTagExifExposureIndex
Exposure index selected on the camera or input device at the time the image was captured.
Tag 0xA215 Type PropertyTagTypeRational Count 1
PropertyTagExifExposureProg
Class of the program used by the camera to set exposure when the picture is taken.
PropertyTagExifExposureProg Value |
Description |
|---|---|
0 |
Not defined |
1 |
Manual |
2 |
Normal program |
3 |
Aperture priority |
4 |
Shutter priority |
5 |
Creative program (biased toward depth of field) |
6 |
Action program (biased toward fast shutter speed) |
7 |
Portrait mode (for close-up photos with the background out of focus) |
8 |
Landscape mode (for landscape photos with the background in focus) |
9 to 255 |
Reserved |
The default setting for the this property is 0
Tag 0x8822 Type SHORT Count 1
PropertyTagExifExposureTime
Exposure time, measured in seconds.
Tag 0x829A Type PropertyTagTypeRational Count 1
PropertyTagExifFileSource
The image source.
If a digital camera recorded the image, the setting for this property is 3.
Tag 0xA300 Type PropertyTagTypeUndefined Count 1
PropertyTagExifFlash
Flash status.
This property is recorded when an image is taken using a strobe light (flash).
Bit 0 indicates the flash firing status, and bits 1 and 2 indicate the flash return status.
The following table shows the possible values for bit 0.
Bit 0 Value |
Description |
|---|---|
0 |
The flash did not fire |
1 |
The flash fired |
The following table shows the possible values for bits 1 and 2.
Bit 1 and 2 Values |
Description |
|---|---|
00 |
No strobe return detection function |
01 |
Reserved |
10 |
Strobe return light not detected |
11 |
Strobe return light detected |
The following table shows examples of PropertyTagExifFlash settings.
PropertyTagExifFlash Setting |
Description |
|---|---|
0x0000 |
Flash did not fire |
0x0001 |
Flash fired |
0x0005 |
Flash fired, but no strobe return light was detected |
Tag 0x9209 Type PropertyTagTypeShort Count 1
PropertyTagExifFlashEnergy
Strobe energy, in Beam Candle Power Seconds (BCPS), at the time the image was captured.
Tag 0xA20B Type PropertyTagTypeRational Count 1
PropertyTagExifFNumber
The F number at the time the image was taken.
Tag 0x829D Type RATIONAL Count 1
PropertyTagExifFocalLength
Actual focal length, in millimeters, of the lens.
Conversion is not made to the focal length of a 35 millimeter film camera.
Tag 0x920A Type PropertyTagTypeRational Count 1
PropertyTagExifFocalResUnit
Unit of measure for PropertyTagExifFocalXRes and PropertyTagExifFocalYRes.
A setting of 2 indicates inches and a setting of 3 indicates centimeters.
Tag 0xA210 Type PropertyTagTypeShort Count 1
PropertyTagExifFocalXRes
Number of pixels in the image width (x) direction per unit on the camera focal plane.
The unit is specified in PropertyTagExifFocalResUnit.
Tag 0xA20E Type PropertyTagTypeRational Count 1
PropertyTagExifFocalYRes
Number of pixels in the image height (y) direction per unit on the camera focal plane.
The unit is specified in PropertyTagExifFocalResUnit.
Tag 0xA20F Type PropertyTagTypeRational Count 1
PropertyTagExifFPXVer
FlashPix format version supported by an FPXR file.
If the FPXR function supports FlashPix format version 1.0, this is indicated similarly to PropertyTagExifVer by recording 0100 as a 4-byte ASCII string.
Because the type is PropertyTagTypeUndefined, there is no NULL terminator.
The default setting for this property is 0100, all other values are reserved.
Tag 0xA000 Type PropertyTagTypeUndefined Count 4
PropertyTagExifIFD
Private property used by the Imaging API.
Not for public use.
The Imaging API uses this property to locate Exif-specific information.
Tag 0x8769 Type PropertyTagTypeLong Count 1
PropertyTagExifInterop
Offset to a block of property items that contain interoperability information.
Tag 0xA005 Type PropertyTagTypeLong Count 1
PropertyTagExifISOSpeed
ISO speed and ISO latitude of the camera or input device as specified in ISO 12232.
Tag 0x8827 Type PropertyTagTypeShort Count Any
PropertyTagExifLightSource
Type of light source.
PropertyTagExifLightSource Settings |
Description |
|---|---|
0 |
Unknown lighting |
1 |
Daylight |
2 |
Fluorescent lighting |
3 |
Tungsten lighting |
17 |
Standard Light A |
18 |
Standard Light B |
19 |
Standard Light C |
20 |
D55 light |
21 |
D65 light |
22 |
D75 light |
23 to 254 |
Reserved |
255 |
Other lighting |
The default setting for this property is 0.
Tag 0x9208 Type PropertyTagTypeShort Count 1
PropertyTagExifMakerNote
Note tag. A property used by manufacturers of EXIF writers to record information. The contents are up to the manufacturer.
Tag 0x927C Type PropertyTagTypeUndefined Count Any
PropertyTagExifMaxAperture
Smallest F number of the lens.
The unit is the APEX value.
Ordinarily it is given in the range of 00.00 to 99.99, but it is not limited to this range.
Tag 0x9205 Type PropertyTagTypeRational Count 1
PropertyTagExifMeteringMode
Metering mode.
PropertyTagExifMeteringMode Setting |
Description |
|---|---|
0 |
Unknown |
1 |
Average |
2 |
Center-weighted average |
3 |
Spot |
4 |
Multi-spot |
5 |
Pattern |
6 |
Partial |
7 to 254 |
Reserved |
255 |
Other |
The default setting for this property is 0.
Tag 0x9207
Type PropertyTagTypeShort
Count 1
PropertyTagExifOECF
Optoelectronic conversion function (OECF) specified in ISO 14524.
The OECF is the relationship between the camera optical input and the image values.
Tag 0x8828 Type PropertyTagTypeUndefined Count Any
PropertyTagExifPixXDim
Information specific to compressed data.
When a compressed file is recorded, the valid width of the meaningful image must be recorded in this tag, whether or not there is padding data or a restart marker.
This property should not exist in an uncompressed file.Tag 0xA002 Type PropertyTagTypeShort or PropertyTagTypeLong Count 1
PropertyTagExifPixYDim
Information specific to compressed data.
When a compressed file is recorded, the valid height of the meaningful image must be recorded in this property's setting whether or not there is padding data or a restart marker.
This property should not exist in an uncompressed file.
Because data padding is unnecessary in the vertical direction, the number of lines recorded in this valid image height property will be the same as that recorded in the SOF.
Tag 0xA003 Type PropertyTagTypeShort or PropertyTagTypeLong Count 1
PropertyTagExifRelatedWav
The name of an audio file related to the image data.
The only relational information recorded is the EXIF audio file name and extension (an ASCII string that consists of 8 characters plus a period (.), plus 3 characters).
The path is not recorded.
When you use this tag, audio files must be recorded in conformance with the EXIF audio format.
Writers can also store audio data within APP2 as FlashPix extension stream data.
Tag 0xA004 Type PropertyTagTypeASCII Count 13
PropertyTagExifSceneType
The type of scene.
If a digital camera recorded the image, the value of this property must be set to 1, indicating that the image was directly photographed.
Tag 0xA301 Type PropertyTagTypeUndefined Count 1
PropertyTagExifSensingMethod
Image sensor type on the camera or input device.
PropertyTagExifSensingMethod Setting |
Description |
|---|---|
1 |
Not defined |
2 |
One-chip color area sensor |
3 |
Two-chip color area sensor |
4 |
Three-chip color area sensor |
5 |
Color sequential area sensor |
7 |
Trilinear sensor |
8 |
Color sequential linear sensor |
Other |
Reserved |
Tag 0xA217 Type PropertyTagTypeShort Count 1
PropertyTagExifShutterSpeed
Shutter speed.
The unit is the Additive System of Photographic Exposure (APEX) value.
Tag 0x9201 Type PropertyTagTypeSRational Count 1
PropertyTagExifSpatialFR
Camera or input device spatial frequency table and SFR values in the image width, image height, and diagonal direction, as specified in ISO 12233.
Tag 0xA20C Type PropertyTagTypeUndefined Count Any
PropertyTagExifSpectralSense
Null-terminated character string that specifies the spectral sensitivity of each channel of the camera used.
The string is compatible with the standard developed by the ASTM Technical Committee.
Tag 0x8824 Type PropertyTagTypeASCII Count Length of the string including the NULL terminator
PropertyTagExifSubjectDist
Distance to the subject, measured in meters.
Tag 0x9206 Type PropertyTagTypeRational Count 1
PropertyTagExifSubjectLoc
Location of the main subject in the scene.
The value of this property represents the pixel at the center of the main subject relative to the left edge.
The first value indicates the column number, and the second value indicates the row number.
Tag 0xA214 Type PropertyTagTypeShort Count 2
PropertyTagExifUserComment
Comment tag. A property used by EXIF users to write keywords or comments about the image besides those in PropertyTagImageDescription and without the character-code limitations of the PropertyTagImageDescription tag.
The character code used in the PropertyTagExifUserComment property is identified based on an ID code in a fixed 8-byte area at the start of the property data area.
The unused portion of the area is padded with NULL (0). ID codes are assigned by means of registration.
Because the type is not ASCII, it is not necessary to use a NULL terminator.
Tag 0x9286 Type PropertyTagTypeUndefined Count Any
PropertyTagExifVer
Version of the EXIF standard supported.
Nonexistence of this field is taken to mean nonconformance to the standard.
Conformance to the standard is indicated by recording 0210 as a 4-byte ASCII string.
Because the type is PropertyTagTypeUndefined, there is no NULL terminator.
The default setting for this property is 0210.
Tag 0x9000 Type PropertyTagTypeUndefined Count 4
PropertyTagExtraSamples
Number of extra color components. For example, one extra component might hold an alpha value.
Tag 0x0152 Type PropertyTagTypeShort Count 1
PropertyTagFillOrder
Logical order of bits in a byte.
Tag 0x010A Type PropertyTagTypeShort Count 1
PropertyTagFrameDelay
Time delay, in hundredths of a second, between two frames in an animated GIF image.
Tag 0x5100 Type PropertyTagTypeLong Count Number of frames in the image
PropertyTagFreeByteCounts
For each string of contiguous unused bytes, the number of bytes in that string.
Tag 0x0121 Type PropertyTagTypeLong Count Number of strings of contiguous unused bytes.
PropertyTagFreeOffset
For each string of contiguous unused bytes, the byte offset of that string.
Tag 0x0120 Type PropertyTagTypeLong
PropertyTagGamma
Gamma value attached to the image.
The gamma value is stored as a rational number (pair of long) with a numerator of 100000. For example, a gamma value of 2.2 is stored as the pair (100000, 45455).
Tag 0x0301 Type PropertyTagTypeRational Count 1
PropertyTagGlobalPalette
Color palette for an indexed bitmap in a GIF image.
Tag 0x5102 Type PropertyTagTypeByte Count 3 x number of palette entries
PropertyTagGpsAltitude
Altitude, in meters, based on the reference altitude specified by PropertyTagGpsAltitudeRef.
Tag 0x0006 Type PropertyTagTypeRational Count 1
PropertyTagGpsAltitudeRef
Reference altitude, in meters.
Tag 0x0005 Type PropertyTagTypeByte Count 1
PropertyTagGpsDestBear
Bearing to the destination point.
The range of values is from 0.00 to 359.99.
Tag 0x0018 Type PropertyTagTypeRational Count 1
PropertyTagGpsDestBearRef
Null-terminated character string that specifies the reference used for giving the bearing to the destination point.
T specifies true direction, and M specifies magnetic direction.
Tag 0x0017 Type PropertyTagTypeASCII Count 2 (one character plus the NULL terminator)
PropertyTagGpsDestDist
Distance to the destination point.
Tag 0x001A Type PropertyTagTypeRational Count 1
PropertyTagGpsDestDistRef
Null-terminated character string that specifies the unit used to express the distance to the destination point.
K, M, and N represent kilometers, miles, and knots respectively.
Tag 0x0019 Type PropertyTagTypeASCII Count 2 (one character plus the NULL terminator)
PropertyTagGpsDestLat
Latitude of the destination point. The latitude is expressed as three rational values giving the degrees, minutes, and seconds respectively.
When degrees, minutes, and seconds are expressed, the format is dd/1, mm/1, ss/1.
When degrees and minutes are used and, for example, fractions of minutes are given up to two decimal places, the format is dd/1, mmmm/100, 0/1.
Tag 0x0014 Type PropertyTagTypeRational Count 3
PropertyTagGpsDestLatRef
Null-terminated character string that specifies whether the latitude of the destination point is north or south latitude.
N specifies north latitude, and S specifies south latitude.
Tag 0x0013 Type PropertyTagTypeASCII Count 2 (one character plus the NULL terminator)
PropertyTagGpsDestLong
Longitude of the destination point. The longitude is expressed as three rational values giving the degrees, minutes, and seconds respectively.
When degrees, minutes, and seconds are expressed, the format is ddd/1, mm/1, ss/1.
When degrees and minutes are used and, for example, fractions of minutes are given up to two decimal places, the format is ddd/1, mmmm/100, 0/1.
Tag 0x0016 Type PropertyTagTypeRational Count 3
PropertyTagGpsDestLongRef
Null-terminated character string that specifies whether the longitude of the destination point is east or west longitude.
E specifies east longitude, and W specifies west longitude.
Tag 0x0015 Type PropertyTagTypeASCII Count 2 (one character plus the NULL terminator)
PropertyTagGpsGpsDop
GPS DOP (data degree of precision).
An HDOP value is written during 2-D measurement, and a PDOP value is written during 3-D measurement.
Tag 0x000B Type PropertyTagTypeRational Count 1
PropertyTagGpsGpsMeasureMode
Null-terminated character string that specifies the GPS measurement mode.
2 specifies 2-D measurement, and 3 specifies 3-D measurement.
Tag 0x000A Type PropertyTagTypeASCII Count 2 (one character plus the NULL terminator)
PropertyTagGpsGpsSatellites
Null-terminated character string that specifies the GPS satellites used for measurements.
This property can be used to specify the ID number, angle of elevation, azimuth, SNR, and other information about each satellite. The format is not specified.
If the GPS receiver is incapable of taking measurements, the value of the property must be set to NULL.
Tag 0x0008 Type PropertyTagTypeASCII Count Length of the string including the NULL terminator
PropertyTagGpsGpsStatus
Null-terminated character string that specifies the status of the GPS receiver when the image is recorded.
A means measurement is in progress, and V means the measurement is Interoperability.
Tag 0x0009 Type PropertyTagTypeASCII Count 2 (one character plus the NULL terminator)
PropertyTagGpsGpsTime
Time as coordinated universal time (UTC).
The value is expressed as three rational numbers that give the hour, minute, and second.
Tag 0x0007 Type PropertyTagTypeRational Count 3
PropertyTagGpsIFD
Offset to a block of GPS property items.
Property items whose tags have the prefix PropertyTagGps are stored in the GPS block. The GPS property items are defined in the EXIF specification.
The Imaging API uses this property to locate GPS information, but it does not expose this property for public use.
Tag 0x8825 Type PropertyTagTypeLong Count 1
PropertyTagGpsImgDir
Direction of the image when it was captured.
The range of values is from 0.00 to 359.99.
Tag 0x0011 Type PropertyTagTypeRational Count 1
PropertyTagGpsImgDirRef
Null-terminated character string that specifies the reference for the direction of the image when it is captured.
T specifies true direction, and M specifies magnetic direction.
Tag 0x0010 Type PropertyTagTypeASCII Count 2 (one character plus the NULL terminator)
PropertyTagGpsLatitude
Latitude. Latitude is expressed as three rational values giving the degrees, minutes, and seconds respectively.
When degrees, minutes, and seconds are expressed, the format is dd/1, mm/1, ss/1.
When degrees and minutes are used and, for example, fractions of minutes are given up to two decimal places, the format is dd/1, mmmm/100, 0/1.
Tag 0x0002 Type PropertyTagTypeRational Count 3
PropertyTagGpsLatitudeRef
Null-terminated character string that specifies whether the latitude is north or south. N specifies north latitude, and S specifies south latitude.
Tag 0x0001 Type PropertyTagTypeASCII Count 2 (one character plus the NULL terminator)
PropertyTagGpsLongitude
Longitude. Longitude is expressed as three rational values giving the degrees, minutes, and seconds respectively.
When degrees, minutes and seconds are expressed, the format is ddd/1, mm/1, ss/1.
When degrees and minutes are used and, for example, fractions of minutes are given up to two decimal places, the format is ddd/1, mmmm/100, 0/1.
Tag 0x0004 Type PropertyTagTypeRational Count 3
PropertyTagGpsLongitudeRef
Null-terminated character string that specifies whether the longitude is east or west longitude.
E specifies east longitude, and W specifies west longitude.
Tag 0x0003 Type PropertyTagTypeASCII Count 2 (one character plus the NULL terminator)
PropertyTagGpsMapDatum
Null-terminated character string that specifies geodetic survey data used by the GPS receiver.
If the survey data is restricted to Japan, the value of this property is TOKYO or WGS-84.
Tag 0x0012 Type PropertyTagTypeASCII Count Length of the string including the NULL terminator
PropertyTagGpsSpeed
Speed of the GPS receiver movement.
Tag 0x000D Type PropertyTagTypeRational Count 1
PropertyTagGpsSpeedRef
Null-terminated character string that specifies the unit used to express the GPS receiver speed of movement.
K, M, and N represent kilometers per hour, miles per hour, and knots respectively.
Tag 0x000C Type PropertyTagTypeASCII Count 2 (one character plus the NULL terminator)
PropertyTagGpsTrack
Direction of GPS receiver movement.
The range of values is from 0.00 to 359.99.
Tag 0x000F Type PropertyTagTypeRational Count 1
PropertyTagGpsTrackRef
Null-terminated character string that specifies the reference for giving the direction of GPS receiver movement.
T specifies true direction, and M specifies magnetic direction.
Tag 0x000E Type PropertyTagTypeASCII Count 2 (one character plus the NULL terminator)
PropertyTagGpsVer
Version of the Global Positioning Systems (GPS) IFD, given as 2.0.0.0.
This property is mandatory when the PropertyTagGpsIFD property is present.
When the version is 2.0.0.0, the property value is 0x02000000.
Tag 0x0000 Type PropertyTagTypeByte Count 4
PropertyTagGrayResponseCurve
For each possible pixel value in a grayscale image, the optical density of that pixel value.
Tag 0x0123 Type PropertyTagTypeShort Count Number of possible pixel values
PropertyTagGrayResponseUnit
Precision of the number specified by PropertyTagGrayResponseCurve.
1 specifies tenths, 2 specifies hundredths, 3 specifies thousandths, and so on.
Tag 0x0122 Type PropertyTagTypeShort Count 1
PropertyTagGridSize
Block of information about grids and guides.
Tag 0x5011 Type PropertyTagTypeUndefined Count Any
PropertyTagHalftoneDegree
Angle for screen.
Tag 0x500C Type PropertyTagTypeRational Count 1
PropertyTagHalftoneHints
Information used by the halftone function
Tag 0x0141 Type PropertyTagTypeShort Count 2
PropertyTagHalftoneLPI
Ink's screen frequency, in lines per inch.
Tag 0x500A Type PropertyTagTypeRational Count 1
PropertyTagHalftoneLPIUnit
Units for the screen frequency.
A setting of 1 indicates lines per inch and a setting of 2 indicates lines per centimeter
Tag 0x500B Type PropertyTagTypeShort Count 1
PropertyTagHalftoneMisc
Miscellaneous halftone information.
Tag 0x500E Type PropertyTagTypeLong Count 1
PropertyTagHalftoneScreen
Boolean value that specifies whether to use the printer's default screens.
A setting of 1 indicates that the printer's default screens should be used and a setting of 2 indicates otherwise.
Tag 0x500F Type PropertyTagTypeByte Count 1
PropertyTagHalftoneShape
Shape of the halftone dots.
PropertyTagHalftoneShape Setting |
Description |
|---|---|
0 |
Round |
1 |
Ellipse |
2 |
Line |
3 |
Square |
4 |
Cross |
6 |
Diamond |
Tag 0x500D Type PropertyTagTypeShort Count 1
PropertyTagHostComputer
Null-terminated character string that specifies the computer and/or operating system used to create the image.
Tag 0x013C Type PropertyTagTypeASCII Count Length of the string including the NULL terminator
PropertyTagICCProfile
International Color Consortium (ICC) profile embedded in the image.
Tag 0x8773 Type PropertyTagTypeByte Count Length of the profile
PropertyTagICCProfileDescriptor
Null-terminated character string that identifies an ICC profile.
Tag 0x0302 Type PropertyTagTypeASCII Count Length of the string including the NULL terminator
PropertyTagImageDescription
Null-terminated character string that specifies the title of the image.
Tag 0x010E Type PropertyTagTypeASCII Count Length of the string including the NULL terminator
PropertyTagImageHeight
Number of pixel rows.
Tag 0x0101 Type PropertyTagTypeShort or PropertyTagTypeLong Count 1
PropertyTagImageTitle
Null-terminated character string that specifies the title of the image.
Tag 0x0320 Type PropertyTagTypeASCII Count Length of the string including the NULL terminator
PropertyTagImageWidth
Number of pixels per row.
Tag 0x0100 Type PropertyTagTypeShort or PropertyTagTypeLong Count 1
PropertyTagIndexBackground
Index of the background color in the palette of a GIF image.
Tag 0x5103 Type PropertyTagTypeByte Count 1
PropertyTagIndexTransparent
Index of the transparent color in the palette of a GIF image.
Tag 0x5104 Type PropertyTagTypeByte Count 1
PropertyTagInkNames
Sequence of concatenated, null-terminated, character strings that specify the names of the inks used in a separated image.
Tag 0x014D Type PropertyTagTypeASCII Count Total length of the sequence of strings including the NULL terminators
PropertyTagInkSet
Set of inks used in a separated image.
Tag 0x014C Type PropertyTagTypeShort Count 1
PropertyTagJPEGACTables
For each color component, the offset to the AC Huffman table for that component. See also PropertyTagSamplesPerPixel.
Tag 0x0209 Type PropertyTagTypeLong Count Number of samples (components) per pixel
PropertyTagJPEGDCTables
For each color component, the offset to the DC Huffman table (or lossless Huffman table) for that component. See also PropertyTagSamplesPerPixel.
Tag 0x0208 Type PropertyTagTypeLong Count Number of samples (components) per pixel
PropertyTagJPEGInterFormat
Offset to the start of a JPEG bitstream.
Tag 0x0201 Type PropertyTagTypeLong Count 1
PropertyTagJPEGInterLength
Length, in bytes, of the JPEG bitstream.
Tag 0x0202 Type PropertyTagTypeLong Count 1
PropertyTagJPEGLosslessPredictors
For each color component, a lossless predictor-selection value for that component. See also PropertyTagSamplesPerPixel.
Tag 0x0205 Type PropertyTagTypeShort Count Number of samples (components) per pixel
PropertyTagJPEGPointTransforms
For each color component, a point transformation value for that component. See also PropertyTagSamplesPerPixel.
Tag 0x0206 Type PropertyTagTypeShort Count Number of samples (components) per pixel
PropertyTagJPEGProc
JPEG compression process.
Tag 0x0200 Type PropertyTagTypeShort Count 1
PropertyTagJPEGQTables
For each color component, the offset to the quantization table for that component. See also PropertyTagSamplesPerPixel.
Tag 0x0207 Type PropertyTagTypeLong Count Number of samples (components) per pixel
PropertyTagJPEGQuality
Private property used by the Adobe Photoshop format.
Not for public use.
Tag 0x5010 Type PropertyTagTypeShort Count Any
PropertyTagJPEGRestartInterval
Length of the restart interval.
Tag 0x0203 Type PropertyTagTypeShort Count 1
PropertyTagLoopCount
For an animated GIF image, the number of times to display the animation.
A value of 0 specifies that the animation should be displayed infinitely.
Tag 0x5101 Type PropertyTagTypeShort Count 1
PropertyTagLuminanceTable
Luminance table. The luminance table and the chrominance table are used to control JPEG quality.
A valid luminance or chrominance table has 64 entries of type PropertyTagTypeShort.
If an image has a luminance table or a chrominance table, it must have both tables.
Tag 0x5090 Type PropertyTagTypeShort Count 64
PropertyTagMaxSampleValue
For each color component, the maximum value assigned to that component. See also PropertyTagSamplesPerPixel.
Tag 0x0119 Type PropertyTagTypeShort Count Number of samples (components) per pixel
PropertyTagMinSampleValue
For each color component, the minimum value assigned to that component. See also PropertyTagSamplesPerPixel.
Tag 0x0118 Type PropertyTagTypeShort Count Number of samples (components) per pixel
PropertyTagNewSubfileType
Type of data in a subfile.
Tag 0x00FE Type PropertyTagTypeLong Count 1
PropertyTagNumberOfInks
Number of inks.
Tag 0x014E Type PropertyTagTypeShort Count 1
PropertyTagOrientation
Image orientation viewed in terms of rows and columns.
PropertyTagOrientation Setting |
Description |
|---|---|
1 |
The 0th row is at the top of the visual image, and the 0th column is the visual left side. |
2 |
The 0th row is at the visual top of the image, and the 0th column is the visual right side. |
3 |
The 0th row is at the visual bottom of the image, and the 0th column is the visual right side. |
4 |
The 0th row is at the visual bottom of the image, and the 0th column is the visual right side. |
5 |
The 0th row is the visual left side of the image, and the 0th column is the visual top. |
6 |
The 0th row is the visual right side of the image, and the 0th column is the visual top. |
7 |
The 0th row is the visual right side of the image, and the 0th column is the visual bottom. |
8 |
The 0th row is the visual left side of the image, and the 0th column is the visual bottom. |
Tag 0x0112 Type PropertyTagTypeShort Count 1
PropertyTagPageName
Null-terminated character string that specifies the name of the page from which the image was scanned.
Tag 0x011D Type PropertyTagTypeASCII Count Length of the string including the NULL terminator
PropertyTagPageNumber
Page number of the page from which the image was scanned.
Tag 0x0129 Type PropertyTagTypeShort Count 1
PropertyTagPaletteHistogram
Palette histogram.
Tag 0x5113 Type PropertyTagTypeByte Count Length of the histogram
PropertyTagPhotometricInterp
How pixel data will be interpreted.
Tag 0x0106 Type PropertyTagTypeShort Count 1
PropertyTagPixelPerUnitX
Pixels per unit in the x direction.
Tag 0x5111 Type PropertyTagTypeLong Count 1
PropertyTagPixelPerUnitY
Pixels per unit in the y direction.
Tag 0x5112 Type PropertyTagTypeLong Count 1
PropertyTagPixelUnit
Unit for PropertyTagPixelPerUnitX and PropertyTagPixelPerUnitY.
A setting of 0 indicates that property is unknown.
Tag 0x5110 Type PropertyTagTypeByte Count 1
PropertyTagPlanarConfig
Whether pixel components are recorded in chunky or planar format.
Tag 0x011C Type PropertyTagTypeShort Count 1
PropertyTagPredictor
Type of prediction scheme that was applied to the image data before the encoding scheme was applied.
Tag 0x013D Type PropertyTagTypeShort Count 1
PropertyTagPrimaryChromaticities
For each of the three primary colors in the image, the chromaticity of that color.
Tag 0x013F Type PropertyTagTypeRational Count 6
PropertyTagPrintFlags
Sequence of one-byte Boolean values that specify printing options.
Tag 0x5005 Type PropertyTagTypeASCII Count Number of flags
PropertyTagPrintFlagsBleedWidth
Print flags bleed width.
Tag 0x5008 Type PropertyTagTypeLong Count 1
PropertyTagPrintFlagsBleedWidthScale
Print flags bleed width scale.
Tag 0x5009 Type PropertyTagTypeShort Count 1
PropertyTagPrintFlagsCrop
Print flags center crop marks.
Tag 0x5007 Type PropertyTagTypeByte Count 1
PropertyTagPrintFlagsVersion
Print flags version.
Tag 0x5006 Type PropertyTagTypeShort Count 1
PropertyTagREFBlackWhite
Reference black point value and reference white point value.
Tag 0x0214 Type PropertyTagTypeRational Count 6
PropertyTagResolutionUnit
Unit of measure for the horizontal resolution and the vertical resolution.
A setting of 2 indicates inches and a setting of 3 indicates centimeters.
Tag 0x0128 Type PropertyTagTypeShort Count 1
PropertyTagResolutionXLengthUnit
Units in which to display the image width.
PropertyTagResolutionXLengthUnit Setting |
Description |
|---|---|
1 |
Inches |
2 |
Centimeters |
3 |
Points |
4 |
Picas |
5 |
Columns |
Tag 0x5003 Type PropertyTagTypeShort Count 1
PropertyTagResolutionXUnit
Units in which to display horizontal resolution.
A setting of 1 indicates pixels per inch and a setting of 2 indicates pixels per centimeter.
Tag 0x5001 Type PropertyTagTypeShort Count 1
PropertyTagResolutionYLengthUnit
Units in which to display the image height.
PropertyTagResolutionYLengthUnit Setting |
Description |
|---|---|
1 |
Inches |
2 |
Centimeters |
3 |
Points |
4 |
Picas |
5 |
Columns |
Tag 0x5004 Type PropertyTagTypeShort Count 1
PropertyTagResolutionYUnit
Units in which to display vertical resolution.
A setting of 1 indicates pixels per inch and a setting of 2 indicates pixels per centimeter.
Tag 0x5002 Type PropertyTagTypeShort Count 1
PropertyTagRowsPerStrip
Number of rows per strip. See also PropertyTagStripBytesCount and PropertyTagStripOffsets.
Tag 0x0116 Type PropertyTagTypeShort or PropertyTagTypeLong Count 1
PropertyTagSampleFormat
For each color component, the numerical format (unsigned, signed, floating point) of that component. See also PropertyTagSamplesPerPixel.
Tag 0x0153 Type PropertyTagTypeShort Count Number of samples (components) per pixel
PropertyTagSamplesPerPixel
Number of color components per pixel.
Tag 0x0115 Type PropertyTagTypeShort Count 1
PropertyTagSMaxSampleValue
For each color component, the maximum value of that component. See also PropertyTagSamplesPerPixel.
Tag 0x0155 Type The type that best matches the pixel component data Count Number of samples (components) per pixel
PropertyTagSMinSampleValue
For each color component, the minimum value of that component. See also PropertyTagSamplesPerPixel.
Tag 0x0154 Type The type that best matches the pixel component data Count Number of samples (components) per pixel
PropertyTagSoftwareUsed
Null-terminated character string that specifies the name and version of the software or firmware of the device used to generate the image.
Tag 0x0131 Type PropertyTagTypeASCII Count Length of the string including the NULL terminator
PropertyTagSRGBRenderingIntent
How the image should be displayed as defined by the International Color Consortium (ICC).
If an Image object is constructed with the useEmbeddedColorManagement parameter set to TRUE, then the Imaging API renders the image according to the specified rendering intent.
The following table shows the possible settings for this property.
PropertyTagSRGBRenderingIntent Settings |
Description |
|---|---|
0 |
Perceptual intent, which is suitable for photographs, gives good adaptation to the display device gamut at the expense of colorimetric accuracy. |
1 |
Relative colorimetric intent is suitable for images (for example, logos) that require color appearance matching that is relative to the display device white point. |
2 |
Saturation intent, which is suitable for charts and graphs, preserves saturation at the expense of hue and lightness. |
3 |
Absolute colorimetric intent is suitable for proofs (previews of images destined for a different display device) that require preservation of absolute colorimetry. |
Tag 0x0303 Type BYTE Count 1
PropertyTagStripBytesCount
For each strip, the total number of bytes in that strip.
Tag 0x0117 Type PropertyTagTypeShort or PropertyTagTypeLong Count Number of strips
PropertyTagStripOffsets
For each strip, the byte offset of that strip. See also PropertyTagRowsPerStrip> and PropertyTagStripBytesCount.
Tag 0x0111 Type PropertyTagTypeShort or PropertyTagTypeLong Count Number of strips
PropertyTagSubfileType
Type of data in a subfile.
Tag 0x00FF Type PropertyTagTypeShort Count 1
PropertyTagT4Option
Set of flags that relate to T4 encoding.
Tag 0x0124 Type PropertyTagTypeLong Count 1
PropertyTagT6Option
Set of flags that relate to T6 encoding.
Tag 0x0125 Type PropertyTagTypeLong Count 1
PropertyTagTargetPrinter
Null-terminated character string that describes the intended printing environment.
Tag 0x0151 Type PropertyTagTypeASCII Count Length of the string including the NULL terminator
PropertyTagThreshHolding
Technique used to convert from gray pixels to black and white pixels.
Tag 0x0107 Type PropertyTagTypeShort Count 1
PropertyTagThumbnailArtist
Null-terminated character string that specifies the name of the person who created the thumbnail image.
Tag 0x5034 Type PropertyTagTypeASCII Count Length of the string including the NULL terminator
PropertyTagThumbnailBitsPerSample
Number of bits per color component in the thumbnail image. See also PropertyTagThumbnailSamplesPerPixel.
Tag 0x5022 Type PropertyTagTypeShort Count Number of samples (components) per pixel in the thumbnail image
PropertyTagThumbnailColorDepth
Bits per pixel (BPP) for the thumbnail image.
Tag 0x5015 Type PropertyTagTypeShort Count 1
PropertyTagThumbnailCompressedSize
Compressed size, in bytes, of the thumbnail image.
Tag 0x5019 Type PropertyTagTypeLong Count 1
PropertyTagThumbnailCompression
Compression scheme used for thumbnail image data.
Tag 0x5023 Type PropertyTagTypeShort Count 1
PropertyTagThumbnailCopyRight
Null-terminated character string that contains copyright information for the thumbnail image.
Tag 0x503B Type PropertyTagTypeASCII Count Length of the string including the NULL terminator
PropertyTagThumbnailData
Raw thumbnail bits in JPEG or RGB format. Depends on PropertyTagThumbnailFormat.
Tag 0x501B Type PropertyTagTypeByte Count Variable
PropertyTagThumbnailDateTime
Date and time the thumbnail image was created. See also PropertyTagDateTime.
Tag 0x5033 Type PropertyTagTypeASCII Count 20
PropertyTagThumbnailEquipMake
Null-terminated character string that specifies the manufacturer of the equipment used to record the thumbnail image.
Tag 0x5026 Type PropertyTagTypeASCII Count Length of the string including the NULL terminator
PropertyTagThumbnailEquipModel
Null-terminated character string that specifies the model name or model number of the equipment used to record the thumbnail image.
Tag 0x5027 Type PropertyTagTypeASCII Count Length of the string including the NULL terminator
PropertyTagThumbnailFormat
Format of the thumbnail image.
A setting of 1 indicates raw RGB and a setting of 2 indicates JPEG.
Tag 0x5012 Type PropertyTagTypeLong Count 1
PropertyTagThumbnailHeight
Height, in pixels, of the thumbnail image.
Tag 0x5014 Type PropertyTagTypeLong Count 1
PropertyTagThumbnailImageDescription
Null-terminated character string that specifies the title of the image.
Tag 0x5025 Type PropertyTagTypeASCII Count Length of the string including the NULL terminator
PropertyTagThumbnailImageHeight
Number of pixel rows in the thumbnail image.
Tag 0x5021 Type PropertyTagTypeShort or PropertyTagTypeLong Count 1
PropertyTagThumbnailImageWidth
Number of pixels per row in the thumbnail image.
Tag 0x5020 Type PropertyTagTypeShort or PropertyTagTypeLong Count 1
PropertyTagThumbnailOrientation
Thumbnail image orientation in terms of rows and columns. See also PropertyTagOrientation.
Tag 0x5029 Type PropertyTagTypeShort Count 1
PropertyTagThumbnailPhotometricInterp
How thumbnail pixel data will be interpreted.
Tag 0x5024 Type PropertyTagTypeShort Count 1
PropertyTagThumbnailPlanarConfig
Whether pixel components in the thumbnail image are recorded in chunky or planar format. See also PropertyTagPlanarConfig.
Tag 0x502F Type PropertyTagTypeShort Count 1
PropertyTagThumbnailPlanes
Number of color planes for the thumbnail image.
Tag 0x5016 Type PropertyTagTypeShort Count 1
PropertyTagThumbnailPrimaryChromaticities
For each of the three primary colors in the thumbnail image, the chromaticity of that color. See also PropertyTagPrimaryChromaticities.
Tag 0x5036 Type PropertyTagTypeRational Count 6
PropertyTagThumbnailRawBytes
Byte offset between rows of pixel data.
Tag 0x5017 Type PropertyTagTypeLong Count 1
PropertyTagThumbnailRefBlackWhite
Reference black point value and reference white point value for the thumbnail image. See also PropertyTagREFBlackWhite.
Tag 0x503A Type PropertyTagTypeRational Count 6
PropertyTagThumbnailResolutionUnit
Unit of measure for the horizontal resolution and the vertical resolution of the thumbnail image. See also PropertyTagResolutionUnit.
Tag 0x5030 Type PropertyTagTypeShort Count 1
PropertyTagThumbnailResolutionX
Thumbnail resolution in the width direction. The resolution unit is given in PropertyTagThumbnailResolutionUnit
Tag 0x502D
PropertyTagThumbnailResolutionY
Thumbnail resolution in the height direction. The resolution unit is given in PropertyTagThumbnailResolutionUnit
Tag 0x502E
PropertyTagThumbnailRowsPerStrip
Number of rows per strip in the thumbnail image. See also PropertyTagThumbnailStripBytesCount and PropertyTagThumbnailStripOffsets.
Tag 0x502B Type PropertyTagTypeShort or PropertyTagTypeLong Count 1
PropertyTagThumbnailSamplesPerPixel
Number of color components per pixel in the thumbnail image.
Tag 0x502A Type PropertyTagTypeShort Count 1
PropertyTagThumbnailSize
Total size, in bytes, of the thumbnail image.
Tag 0x5018 Type PropertyTagTypeLong Count 1
PropertyTagThumbnailSoftwareUsed
Null-terminated character string that specifies the name and version of the software or firmware of the device used to generate the thumbnail image.
Tag 0x5032 Type PropertyTagTypeASCII Count Length of the string including the NULL terminator
PropertyTagThumbnailStripBytesCount
For each thumbnail image strip, the total number of bytes in that strip.
Tag 0x502C Type PropertyTagTypeShort or PropertyTagTypeLong Count Number of strips in the thumbnail image
PropertyTagThumbnailStripOffsets
For each strip in the thumbnail image, the byte offset of that strip. See also PropertyTagThumbnailRowsPerStrip and PropertyTagThumbnailStripBytesCount.
Tag 0x5028 Type PropertyTagTypeShort or PropertyTagTypeLong Count Number of strips
PropertyTagThumbnailTransferFunction
Tables that specify transfer functions for the thumbnail image. See also PropertyTagTransferFunction.
Tag 0x5031 Type PropertyTagTypeShort Count Total number of 16-bit words required for the tables
PropertyTagThumbnailWhitePoint
Chromaticity of the white point of the thumbnail image. See also PropertyTagWhitePoint.
Tag 0x5035 Type PropertyTagTypeRational Count 2
PropertyTagThumbnailWidth
Width, in pixels, of the thumbnail image.
Tag 0x5013 Type PropertyTagTypeLong Count 1
PropertyTagThumbnailYCbCrCoefficients
Coefficients for transformation from RGB to YCbCr data for the thumbnail image. See also PropertyTagYCbCrCoefficients.
Tag 0x5037 Type PropertyTagTypeRational Count 3
PropertyTagThumbnailYCbCrPositioning
Position of chrominance components in relation to the luminance component for the thumbnail image. See also PropertyTagYCbCrPositioning.
Tag 0x5039 Type PropertyTagTypeShort Count 1
PropertyTagThumbnailYCbCrSubsampling
Sampling ratio of chrominance components in relation to the luminance component for the thumbnail image. See also PropertyTagYCbCrSubsampling.
Tag 0x5038 Type PropertyTagTypeShort Count 2
PropertyTagTileByteCounts
For each tile, the number of bytes in that tile.
Tag 0x0145 Type PropertyTagTypeShort or PropertyTagTypeLong Count Number of tiles
PropertyTagTileLength
Number of pixel rows in each tile.
Tag 0x0143 Type PropertyTagTypeShort or PropertyTagTypeLong Count 1
PropertyTagTileOffset
For each tile, the byte offset of that tile.
Tag 0x0144 Type PropertyTagTypeLong Count Number of tiles
PropertyTagTileWidth
Number of pixel columns in each tile.
Tag 0x0142 Type PropertyTagTypeShort or PropertyTagTypeLong Count 1
PropertyTagTransferFunction
Tables that specify transfer functions for the image.
Tag 0x012D Type PropertyTagTypeShort Count Total number of 16-bit words required for the tables
PropertyTagTransferRange
Table of values that extends the range of the transfer function.
Tag 0x0156 Type PropertyTagTypeShort Count 6
PropertyTagWhitePoint
Chromaticity of the white point of the image.
Tag 0x013E Type PropertyTagTypeRational Count 2
PropertyTagXPosition
Offset from the left side of the page to the left side of the image. The unit of measure is specified by PropertyTagResolutionUnit.
Tag 0x011E Type PropertyTagTypeRational Count 1
PropertyTagXResolution
Number of pixels per unit in the image width (x) direction. The unit is specified by PropertyTagResolutionUnit
Tag 0x011A Type PropertyTagTypeRational Count 1
PropertyTagYCbCrCoefficients
Coefficients for transformation from RGB to YCbCr image data.
Tag 0x0211 Type PropertyTagTypeRational Count 3
PropertyTagYCbCrPositioning
Position of chrominance components in relation to the luminance component.
Tag 0x0213 Type PropertyTagTypeShort Count 1
PropertyTagYCbCrSubsampling
Sampling ratio of chrominance components in relation to the luminance component.
Tag 0x0212 Type PropertyTagTypeShort Count 2
PropertyTagYPosition
Offset from the top of the page to the top of the image. The unit of measure is specified by PropertyTagResolutionUnit.
Tag 0x011F Type PropertyTagTypeRational Count 1
PropertyTagYResolution
Number of pixels per unit in the image height (y) direction. The unit is specified by PropertyTagResolutionUnit.
Tag 0x011B Type PropertyTagTypeRational Count 1
Remarks
The data type for a value of a property item is defined by one of the PropertyTagType Values.
Requirements
Header |
imaging.h |