Image processing device and method for assigning luma blocks to chroma blocks

摘要

The present invention relates to an image processing device and method, which realize improvement in encoding efficiency for color difference signals and reduction in address calculations for memory access. In a case where a block size of orthogonal transform is 4×4, and a macroblock of luminance signals is configured of four 4×4 pixel blocks appended with 0 through 1, the four luminance signal blocks are corresponded with one color difference signal 4×4 block appended with C. At this time, there exist four motion vector information of mv0, mv1, mv2, and mv3, as to the four luminance signal blocks. The motion vector information mvc of the one color difference signal 4×4 block is calculated by averaging processing using these four motion vector information. The present invention can be applied to an image encoding device which performed encoding based on the H.264/AVC format, for example.

主权项

1. An image processing device comprising: circuitry configured to
assign four 4×4 luma blocks including a luma component of an image to one first 4×4 chroma block including first chroma component of the image and one second 4×4 chroma block including second chroma component of the image which is different from the first chroma component in a format of 4:2:0 including a luma signal and a chroma signal and that a luma block size is 4×4; and encode the 4×4 luma blocks and the 4×4 chroma blocks according to an assigned luma block size and an assigned chroma block size.