以8x8亮度块、4x4色度快为例。8x8亮度块像素点扫描表尺寸是8x8,CG扫描表尺寸是2x2;4x4色度块像素点扫描表尺寸是4x4,CG扫描表尺寸是1x1,三种扫描方式的扫描表如下表所示。
扫描方式 |
分量 |
像素点/CG |
扫描表 |
对角扫描 |
亮度 |
像素点扫描表 |
0, 8, 1, 16, 9, 2, 24, 17, 10, 3, 25, 18, 11, 26, 19, 27, 32, 40, 33, 48, 41, 34, 56, 49, 42, 35, 57, 50, 43, 58, 51, 59, 4, 12, 5, 20, 13, 6, 28, 21, 14, 7, 29, 22, 15, 30, 23, 31, 36, 44, 37, 52, 45, 38, 60, 53, 46, 39, 61, 54, 47, 62, 55, 63. |
CG扫描表 |
0, 2, 1, 3. | ||
色度 |
像素点扫描表 |
0, 4, 1, 8, 5, 2, 12, 9, 6, 3, 13, 10, 7, 14, 11, 15. | |
CG扫描表 |
0 | ||
水平扫描 |
亮度 |
像素点扫描表 |
0, 1, 2, 3, 8, 9, 10, 11, 16, 17, 18, 19, 24, 25, 26, 27, 4, 5, 6, 7, 12, 13, 14, 15, 20, 21, 22, 23, 28, 29, 30, 31, 32, 33, 34, 35, 40, 41, 42, 43, 48, 49, 50, 51, 56, 57, 58, 59, 36, 37, 38, 39, 44, 45, 46, 47, 52, 53, 54, 55, 60, 61, 62, 63. |
CG扫描表 |
0, 1, 2, 3. | ||
色度 |
像素点扫描表 |
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15. | |
CG扫描表 |
0 | ||
垂直扫描 |
亮度 |
像素点扫描表 |
0, 8, 16, 24, 1, 9, 17, 25, 2, 10, 18, 26, 3, 11, 19, 27, 32, 40, 48, 56, 33, 41, 49, 57, 34, 42, 50, 58, 35, 43, 51, 59, 4, 12, 20, 28, 5, 13, 21, 29, 6, 14, 22, 30, 7, 15, 23, 31, 36, 44, 52, 60, 37, 45, 53, 61, 38, 46, 54, 62, 39, 47, 55, 63. |
CG扫描表 |
0, 2, 1, 3. | ||
色度 |
像素点扫描表 |
0, 4, 8, 12, 1, 5, 9, 13, 2, 6, 10, 14, 3, 7, 11, 15. | |
CG扫描表 |
0 |