Luma-chroma coding with one common or three distinct spatial predictors
There are provided video encoders, video decoders, and corresponding methods. A video encoder for encoding video signal data for an image block includes an encoder for encoding all color components of the video signal data using a common predictor.
1. A video encoder for encoding video signal data for an image block, the video encoder comprising an encoder for encoding the video signal data using unique color component predictors for each of color components of the video signal data said encoder encodes all of the color components of the video signal data without applying a residual color transform thereto and wherein sampling of the video signal data corresponds to a 4:4:4 format.
2. The video encoder of claim 1 , wherein the unique predictors are used to encode the video signal data irrespective of whether the video signal data is partitioned using a common block partition or a multiple block partition.
3. The video encoder of claim 1 , wherein the unique predictors are all luma predictors.
4. The video encoder of claim 1 , wherein the unique predictors consist of unique luma predictors used for both luma and chroma components of the video signal data.
5. The video encoder of claim 1 , wherein sampling of the video signal data corresponds to any of the, 4:2:2 and 4:2:0 formats of the International Telecommunication Union, Telecommunication Sector H.264 standard.
6. The video encoder of claim 1 , wherein the unique predictors are used for both intra and inter coding of the video signal data.
7. The video encoder of claim 1 , wherein a first spatial prediction mode for a first one of the color components is set by prev_intra4×4_pred_mode_flag0 and rem_intra4×4_pred_mode0 parameters, a second prediction mode for a second one of the color components is set by prev_intra4×4_pred_mode_flag1 and rem_intra4×4_pred_mode1 parameters, and a third prediction mode for a third one of the color components is set by prev_intra4×4_pred_mode_flag2 and rem_intra4×4_pred_mode2 parameters of the International Telecommunication Union, Telecommunication Sector H.264 standard.
8. A method for encoding video signal data for an image block, the method comprising encoding the video signal data using unique color component predictors for each of color components of the video signal data, said encoding step encodes all of the color components of the video signal data without applying a residual color transform thereto and wherein sampling of the video signal data corresponds to a 4:4:4 format.
9. The method of claim 8 , wherein the unique predictors are used to encode the video signal data irrespective of whether the video signal data is partitioned using a common block partition or a multiple block partition.
10. The method of claim 8 , wherein the unique predictors are all luma predictors.
11. The method of claim 8 , wherein the unique predictors consist of unique luma predictors used for both luma and chroma components of the video signal data.
12. The method of claim 8 , wherein sampling of the video signal data corresponds to any of the 4:2:2 and 4:2:0 formats of the International Telecommunication Union, Telecommunication Sector H.264 standard.
13. The method of claim 8 , wherein the unique predictors are used for both intra and inter coding of the video signal data.
14. The method of claim 8 , wherein a first spatial prediction mode for a first one of the color components is set by prev_intra4×4_pred_mode_flag0 and rem_intra4×4_pred_mode0 parameters, a second prediction mode for a second one of the color components is set by prev_intra4×4_pred_mode_flag1 and rem_intra4×4_pred_mode1 parameters, and a third prediction mode for a third one of the color components is set by prev_intra4×4_pred_mode_flag2 and rem_intra4×4_pred_mode2 parameters of the International Telecommunication Union, Telecommunication Sector H.264 standard.
15. A video decoder for decoding video signal data for an image block, the video decoder comprising a decoder for decoding the video signal data using unique color component predictors for each of color components of the video signal data, wherein said decoder decodes all of the color components of the video signal data without applying a residual color transform thereto and wherein sampling of the video signal data corresponds to a 4:4:4 format.
16. The video decoder of claim 15 , wherein the unique predictors are used to decode the video signal data irrespective of whether the video signal data is partitioned using a common block partition or a multiple block partition.
17. The video decoder of claim 15 , wherein the unique predictors are all luma predictors.
18. The video decoder of claim 15 , wherein the unique predictors consist of unique luma predictors used for both luma and chroma components of the video signal data.
19. The video decoder of claim 15 , wherein sampling of the video signal data corresponds to any of the 4:2:2 and 4:2:0 formats of the International Telecommunication Union, Telecommunication Sector H.264 standard.
20. The video decoder of claim 15 , wherein the unique predictors are used for both intra and inter coding of the video signal data.
21. The video decoder of claim 15 , wherein a first spatial prediction mode for a first one of the color components is set by prev_intra4×4_pred_mode_flag0 and rem_intra4×4_pred_mode0 parameters, a second prediction mode for a second one of the color components is set by prev_intra4×4_pred_mode_flag1 and rem_intra4×4_pred_model parameters, and a third prediction mode for a third one of the color components is set by prev_intra4×4_pred_mode_flag2 and rem_intra4×4_pred_mode2 parameters of the International Telecommunication Union, Telecommunication Sector H.264 standard.
22. A method for decoding video signal data for an image block, the method comprising decoding the video signal data using unique color component predictors for each of color components of the video signal data, said decoding step decodes all of the color components of the video signal data without applying a residual color transform thereto and wherein sampling of the video signal data corresponds to a 4:4:4 format.
23. The method of claim 22 , wherein the unique predictors are used to decode the video signal data irrespective of whether the video signal data is partitioned using a common block partition or a multiple block partition.
24. The method of claim 22 , wherein the unique predictors are all luma predictors.
25. The method of claim 22 , wherein the unique predictors consist of unique luma predictors used for both luma and chroma components of the video signal data.
26. The method of claim 22 , wherein sampling of the video signal data corresponds to any of the 4:2:2 and 4:2:0 formats of the International Telecommunication Union, Telecommunication Sector H.264 standard.
27. The method of claim 22 , wherein the unique predictors are used for both intra and inter coding of the video signal data.
28. The method of claim 22 , wherein a first spatial prediction mode for a first one of the color components is set by prev_intra4×4_pred_mode_flag0 and rem_intra4×4_pred_mode0 parameters, a second prediction mode for a second one of the color components is set by prev_intra4×4_pred_mode_flag1 and rem_intra4×4_pred_model parameters, and a third prediction mode for a third one of the color components is set by prev_intra4×4_pred_mode_flag2 and rem_intra4×4_pred_mode2 parameters of the International Telecommunication Union, Telecommunication Sector H.264 standard.