Patent ID: 11949860
Assignee: KDDI CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. An image decoding method, comprising:
a step of using, as an input, a decoded signal prior to the filtering process and outputting a filtered decoded signal, wherein
in this step, clipping processing is performed on a differential value between a reference pixel value and a pixel value of the decoded signal prior to the filtering process such that the absolute value of a differential value between a reference pixel value and a pixel value of the decoded signal prior to the filtering process is less than or equal to a predefined threshold value, and the filtered decoded signal is generated through the linear weighted addition of the value after the clipping processing is performed, a filter coefficient and the pixel value of the decoded signal prior to the filtering process, and
the threshold value for a luma signal is set to be greater than or equal to the threshold value for a chroma signal regardless of an internal bit depth.