Image coding apparatus, image coding method, image decoding apparatus, image decoding method
An image encoding and image decoding technology, which is applied in the field of image encoding equipment, can solve the problem of increasing the amount of quantization matrix codes, and achieve the effect of reducing the amount of codes and efficient encoding/decoding
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[0051] Various exemplary embodiments, features, and aspects of the present invention will be described in detail below with reference to the drawings.
[0052] In the context of this specification, the Figure 13B The scanning method shown for a two-dimensional matrix is called horizontal scanning, and will Figure 13D The scanning method shown for a two-dimensional matrix is called vertical scanning.
[0053] figure 1 Is a block diagram showing an image encoding device according to the first exemplary embodiment of the present invention.
[0054] in figure 1 , The block dividing unit 101 divides the input image into a plurality of blocks.
[0055] The prediction unit 102 predicts each block divided by the block dividing unit 101 in units of blocks, determines a prediction method, calculates a difference according to the determined prediction method, and also calculates a prediction error. If you want to process intra frames of moving images or still images, perform intra predic...
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