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avfilter/vf_bm3d: improve threshold scaling with different block_size and depth

This commit is contained in:
Paul B Mahol 2019-11-18 23:20:18 +01:00
parent eae292919b
commit 6c2f866309
1 changed files with 1 additions and 1 deletions
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2
libavfilter/vf_bm3d.c
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@ -443,7 +443,7 @@ static void basic_block_filtering(BM3DContext *s, const uint8_t *src, int src_li
}
}
threshold[0] = s->hard_threshold * s->sigma;
threshold[0] = s->hard_threshold * s->sigma * M_SQRT2 * block_size * block_size * (1 << (s->depth - 8)) / 255.f;
threshold[1] = threshold[0] * sqrtf(2.f);
threshold[2] = threshold[0] * 2.f;
threshold[3] = threshold[0] * sqrtf(8.f);