VIDEO DATA PROCESSING SYSTEM

摘要

The technology described herein facilitates parallel encoding of two groups of blocks of data of a sequence of blocks of data, whilst also facilitating the use of dependent encoding across the sequence of data blocks. This is achieved by allocating pairs of first and second groups of data blocks to separate encoding units, and determining an encoding parameter value to be used for encoding the first block of each second group of data blocks. For correct reconstruction of the image, it is ensured that a block belonging to the first group of data blocks of a pair of groups of data blocks is encoded with an encoding parameter value that will cause a decoder to use the determined encoding parameter value when decoding the first block of the second group.

主权项

1. A method of encoding video image data comprising encoding a sequence of unencoded blocks of the video image data into a sequence of encoded blocks of data in a video encoding format, wherein:
the video encoding format uses an encoding parameter when encoding unencoded blocks of data; the method comprising, for at least one pair of a first and a second group of unencoded blocks of data of the sequence of unencoded blocks of data, the first and second groups comprising contiguous blocks of data in the bitstream order of the video image data, the first block of the second group following the last block of the first group in the bitstream order: encoding the first and second groups of unencoded blocks of data to generate a first group and a second group of encoded blocks of data, respectively; wherein the encoding of the first and second group of unencoded blocks of data comprises: determining a value of the encoding parameter to be used for encoding an unencoded block of data in the second group, before the encoding of all of the blocks of data in the first group has finished; encoding the unencoded block of data in the second group using the determined encoding parameter value; and ensuring that an encoded block of data in the first group indicates an encoding parameter value that will cause a decoder to derive the determined encoding parameter value for the encoded block of data in the second group when using the indicated encoding parameter value for the encoded block of data in the first group to determine the encoding parameter value to use for decoding the block of data in the second group.