DECODING DEVICE AND ENCODING DEVICE
To provide a decoding device and an encoding device that do not add color to image data whose color difference component has a value of 0 in the encoding of an image whose color difference component can take a positive or negative value.SOLUTION: A decoding device 2 for decoding an encoded pixel val...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | To provide a decoding device and an encoding device that do not add color to image data whose color difference component has a value of 0 in the encoding of an image whose color difference component can take a positive or negative value.SOLUTION: A decoding device 2 for decoding an encoded pixel value includes an index acquisition unit 23 for calculating an encoding code corresponding to a pixel value 0 from the maximum value, the minimum value, and the number of quantization bits of the pixel value and a decoding unit 24 for decoding the relevant target value to 0 when a value of the calculated encoding code and a target value of decoding are the same.SELECTED DRAWING: Figure 2
【課題】色差成分が正負の値をとりうる画像の符号化において、色差成分の値が０の画像データに色味を持たせない復号化装置及び符号化装置を提供する。【解決手段】符号化された画素値を復号化する復号化装置２は、画素値の最大値と、最小値と、量子化ビット数とから、画素値０に対応する符号化コードを算出するインデックス取得部２３と、算出した符号化コードの値と復号化の対象値とが同一の場合に、当該対象値を０に復号化する復号化部２４と、を備える。【選択図】図２ |
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