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