JEITA CP-3451
- 18 -
Orientation
The image orientation viewed in terms of rows and columns.
Tag
=
274 (112.H)
Type
=
SHORT
Count
=
1
Default
=
1
1
=
The 0th row is at the visual top of the image, and the 0th column is the visual left-hand side.
2
=
The 0th row is at the visual top of the image, and the 0th column is the visual right-hand side.
3
=
The 0th row is at the visual bottom of the image, and the 0th column is the visual right-hand side.
4
=
The 0th row is at the visual bottom of the image, and the 0th column is the visual left-hand side.
5
=
The 0th row is the visual left-hand side of the image, and the 0th column is the visual top.
6
=
The 0th row is the visual right-hand side of the image, and the 0th column is the visual top.
7
=
The 0th row is the visual right-hand side of the image, and the 0th column is the visual bottom.
8
=
The 0th row is the visual left-hand side of the image, and the 0th column is the visual bottom.
Other
=
reserved
SamplesPerPixel
The number of components per pixel. Since this standard applies to RGB and YCbCr images, the value set for this
tag is 3. In JPEG compressed data a JPEG marker is used instead of this tag.
Tag
=
277 (115.H)
Type
=
SHORT
Count
=
1
Default
=
3
PlanarConfiguration
Indicates whether pixel components are recorded in chunky or planar format. In JPEG compressed files a JPEG
marker is used instead of this tag. If this field does not exist, the TIFF default of 1 (chunky) is assumed.
Tag
=
284 (11C.H)
Type
=
SHORT
Count
=
1
1
=
chunky format
2
=
planar format
Other
=
reserved
YCbCrSubSampling
The sampling ratio of chrominance components in relation to the luminance component. In JPEG compressed data
a JPEG marker is used instead of this tag.
Tag
= 530 (212.H)
Type
= SHORT
Count
= 2
[2, 1]
=
YCbCr4:2:2
[2, 2]
=
YCbCr4:2:0
Other
=
reserved
YCbCrPositioning
The position of chrominance components in relation to the luminance component. This field is designated only for