Provides the image decoding apparatus includes a decoding unit adapted to the weighted prediction, said the number of bits per pixel in the current image to adjust at least one of the weighted value, weighted using the adjusted value recovery prediction pixel required block value prediction unit; decoding space, use and included in the restoration of the image in each block the required space adjacent block recovery prediction pixel for block value; decoding time prediction unit, using the desired block and included in the previous image restoration in the recovery block required block prediction pixel value; and decoding selection unit selecting prediction unit, decoding and decoding time prediction of spatial prediction unit a prediction unit predicts that the value of the pixel as a predictor of recovery in decoding and using weighted prediction pixel recovery pixel value required for decoding block, which adapt to using the following equation In the number of bits to adjust the weighted value, W '= W = 2 (N-M), where W is the weighted value before adjustment, W' is the adjusted weighted value, N is the number of bits, and M is constant.
【技术实现步骤摘要】
【技术保护点】
一种图像解码装置,该装置包括:解码加权预测单元,被适配为适应于表示当前图像的每个像素的比特数而调整至少一个加权值,并且使用调整后的加权值来恢复所需块的预测像素值;解码空间预测单元,被适配为使用与包括在恢复的当前图像中的各块中的所需块空间上相邻的块来恢复所需块的预测像素值;解码时间预测单元,被适配为使用所需块及包括在恢复的先前图像中的各块来恢复所需块的预测像素值;以及解码选择单元,被适配为选择在解码加权预测单元、解码空间预测单元和解码时间预测单元中预测的预测值中的一个作为恢复的预测像素值,并使用所恢复的预测像素值来对所需块的像素进行解码,其中,利用以下的等式适应于比特数而对加 ...
【技术特征摘要】
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【专利技术属性】
技术研发人员:金铉文,赵大星,金佑湜,
申请(专利权)人:三星电子株式会社,
类型:发明
国别省市:KR
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