Prediction device, editing device, inverse prediction device, decoding device and operation device

Abstract

A candidate prediction block storage unit (12) stores candidate prediction pixel data {"a" to "p"} (a four-by-four area) and neighboring pixel data {"A" to "D"}. A neighboring pixel series-generating unit (13) in receipt of the neighboring pixel data {"A" to "D"} from the candidate prediction block storage unit (12) feeds a first neighboring pixel series {"A", "B", "C", and so on} and a second neighboring pixel series {"B", "C", "D", and so on} into first and second lines (L1,L2), respectively. A predictive processing unit (14) in receipt of the candidate prediction pixel data {"a" to "p"} from the candidate prediction block storage unit (12) multiplies the candidate prediction pixel data by two, thereby providing multiplied data. The predictive processing unit (14) subtracts the first neighboring pixel series from the multiplied data, thereby providing subtracted data. The predictive processing unit (14) subtracts the second neighboring pixel series from the subtracted data, thereby providing further subtracted data. The predictive processing unit (14) divides the further subtracted data by two, thereby providing divided data A predicted block storage unit (15) stores the divided data as predicted pixel data {"a#", "b#", and so on}. As a result, steps of storing and generating predictive pixels are eliminated.

Description

technical field [0001] The present invention relates to a prediction device that performs prediction processing when encoding image data, an inverse prediction device that performs inverse prediction processing when decoding encoded image data, and related technologies. Background technique [0002] There is an H.26L encoding method as a next-generation video image encoding method in the standardization activities of the International Telecommunication Union (ITU). [0003] In this H.26L encoding method, in order to improve the encoding efficiency, the following method is adopted: the frame is divided into blocks of small areas, and the adjacent pixels of the surrounding blocks are used in each block to perform the prediction process of the target block, and the residual The information is entropy encoded. [0004] Hereinafter, a conventional prediction device that realizes prediction processing based on the H.26L encoding method will be described with reference to the draw...

AI Technical Summary

Problems solved by technology

[0043] As described above, in the conventional prediction device and the conventional inverse prediction device, regardless of the mode A or mode B, there is a problem that the number of calculation steps is large and the processing performance is low.

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