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

Claim 0:
1. An image decoding device, comprising:
a filter unit configured to use, as an input, a decoded signal prior to the filtering process and output a filtered decoded signal, wherein
the filter unit is configured to perform clipping processing on a differential value between a reference pixel value and a pixel value of the decoded signal prior to the filtering process such that an absolute value of the differential value is less than or equal to a predefined threshold value, and to generate the filtered decoded signal 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.