YUV sub sampling patterns supported by Breeze【转载】

The positions of luma and chroma samples in every YUV format supported by Breeze are characterized by the specific pattern. Currently Breeze supports 7 YUV / YCbCr sub sampling patterns in 3 sub sampling ratio groups:

4:4:4 – uniform

4:2:2 – co site even

4:2:2 – co site odd

4:2:0 – centered

4:2:0 – co site even

4:2:0 – co site odd

4:2:0 – centered

Table 1: YUV sub sampling patterns supported by Breeze

Sub sampling ratio Sub sampling pattern Color component size

Uniform Co site Even Co site Odd Centered Luma Y Chroma Cb Chroma Cr

4:4:4 1 1 1

4:2:2 1 1/2 1/2

4:2:0 1 1/4 1/4

Designation of used symbols are the following:

– position of luma sample only

– position of 2 chroma samples only

– positions of luma and 2 chroma samples are co sited.

References:

RECOMMENDATION ITU-R BT.601-5, 1982-1995.

RECOMMENDATION ITU-R BT.709-5, 1990-2002.