TIFF 6.0 Specification
Final—June 3, 1992
Expanding on the example in the previous section, consider a YC
b
C
r
image having
ChromaSubsampleHoriz
= 4 and
ChromaSubsampleVert
= 2:
Y component
Y
00
Y
01
Y
02
Y
03
Y
04
Y
05
Y
10
Y
11
Y
12
Y
13
Cb component
Cr component
Cb00
Cr00
For PlanarConfiguration = 1, the sample order is:
Y
00
, Y
01
, Y
02
, Y
03
, Y
10
, Y
11
, Y
12
, Y
13
, Cb
00
, Cr
00
, Y
04
, Y
05
...
Minimum Requirements for YCbCr Images
In addition to satisfying the general Baseline TIFF requirements, a YCbCr file
must have the following characteristics:
• SamplesPerPixel = 3. SHORT. Three components representing Y, Cb and Cr.
• BitsPerSample = 8,8,8. SHORT.
• Compression = none (1), LZW (5) or JPEG (6). SHORT.
• PhotometricInterpretation = YC
b
C
r
(6). SHORT.
• ReferenceBlackWhite = 6 RATIONALS. Specify the reference values for
black and white.
If the conversion from RGB is not according to CCIR Recommendation 601-1,
code YC
b
C
r
Coefficients.
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