Filtering method, dynamic image coding device, dynamic image decoding device and dynamic image coding / decoding device

摘要

Filtering method with unblocking filtering of a plurality of blocks included in an image, said filtering method comprising: filtering with unblocking two adjacent blocks to generate filtered data, using pixel values included respectively in the two blocks; characterized by determining whether each of the two blocks is an intracoded pulse modulation block, IPCM, or a block other than IPCM, and when the two blocks are an IPCM block and a different IPCM block, emit the filtered data as values of the pixels in the non-IPCM block, and emit, as values of the pixels in the IPCM block, unfiltered values of the pixels in the IPCM block, in which in filtering, a filter intensity for the Non-IPCM block is derived based solely on a quantization parameter of the non-IPCM block, without using any quantification parameter of the IPCM block or any other substitute set value.