| 摘要 |
<p>A method for decoding video data blocks using variable length codes, comprising transforming information about the spatial frequency distribution of a video data block into pixel values. Prior to said transformation, a first reference value (Xref) representing the abruptness of variations in information about spatial frequency distribution within the block is generated, after said transformation, a second reference value ( DELTA ) representing the abruptness of variation in certain information between the block and at least one previously transformed video data block is generated. The first reference value (Xref) is compared to a first threshold value (TH1) and the second reference value ( DELTA ) to a second threshold value (TH2); and as a response to either of the first (Xref) and second reference values ( DELTA ) being greater than the first (TH1) and respectively the second threshold value (TH2), an error in the block is detected. <IMAGE></p> |
