| 摘要 |
Image processing apparatus/method, wherein a plurality of kinds of video signals in which aspect ratios of an image are different are selectively inputted and a predetermined arithmetic operation is executed by using predetermined coefficients selected in accordance with the kind of inputted video signal, thereby orthogonally transforming the inputted video signal. Image processing apparatus/method, wherein a video signal which was orthogonally transformed and encoded is inputted, the inputted video signal is inversely orthogonally transformed by performing a predetermined arithmetic operation by using predetermined coefficients, and the inversely orthogonally transformed video signal is outputted, and in the arithmetic operating process, the coefficients for use in the predetermined arithmetic operation are selected in accordance with an aspect ratio of the video signal when it is outputted. Image processing apparatus/method, wherein (mxn) signals are collected from an input signal train and divided into blocks, the signals divided into the blocks are converted into blocks of (ixj) signals, and the signals converted into the blocks are orthogonally transformed on a unit basis of those blocks. Image processing apparatus/method, wherein encoded signals obtained by encoding signals divided into blocks by (mxn) signals are inversely orthogonally transformed on a unit basis of those blocks, the inversely orthogonally transformed signals are converted into blocks of (ixj) signals, and each of the blocks converted is connected, thereby reconstructing a video signal.
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