Video encoding device, video decoding device, video encoding method, video decoding method, and program

Abstract

The intra prediction unit 20A that performs intra prediction includes a luma reference pixel acquisition unit 21A and a color difference reference pixel acquisition unit 22A. The luminance reference pixel acquisition unit 21A extracts reference pixels located around the luminance block with integer pixels in the minimum CU block whose coding unit is the minimum coding unit of the CU, wherein the luminance block corresponds to the color difference prediction target block, and acquires the extracted reference pixels The pixel value of the pixel. The chroma reference pixel acquisition unit 22A extracts reference pixels located around the chroma prediction target block with integer pixels in the smallest CU block whose coding unit is the smallest coding unit of the CU, and acquires pixel values ​​of the extracted reference pixels. Accordingly, it is possible to reduce the number of reference pixels referred to for reducing redundancy among color components.

Description

technical field [0001] The present invention relates to a moving picture coding device, a moving picture decoding device, a moving picture coding method, a moving picture decoding method, and a program. Background technique [0002] HEVC (High Efficiency Video Coding), which is a video coding method using intra prediction, inter prediction, and residual transform, has been disclosed (for example, see Non-Patent Document 1). [0003] [Structure and Operation of Video Coding Device MM] [0004] Figure 11 is a block diagram of a moving image encoding device MM according to a conventional example that encodes moving images using the above-mentioned moving image encoding method. The moving image encoding device MM includes: an inter prediction unit 10, an intra prediction unit 20, a transform / quantization unit 30, an entropy encoding unit 40, an inverse quantization / inverse transform unit 50, a loop filter unit 60, a first buffer unit 70, and the second buffer portion 80 . ...

AI Technical Summary

Problems solved by technology

[0040] As mentioned above, in LM mode, each TU needs to export parameters, so the number of reference pixels increases, and the number of calculations and memory accesses also increase.

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