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| author | Paul B Mahol <onemda@gmail.com> | 2020-05-16 19:48:17 +0200 |
|---|---|---|
| committer | Paul B Mahol <onemda@gmail.com> | 2020-05-19 20:10:34 +0200 |
| commit | 5646d02cb37098d7581fddd6f09f7a0003318611 (patch) | |
| tree | 529b818e7921ec46737382619407258e92ed553a /libavfilter/vf_chromakey.c | |
| parent | 8b0575d7638f40730c020ada41a573fff715c1a7 (diff) | |
| download | ffmpeg-5646d02cb37098d7581fddd6f09f7a0003318611.tar.gz | |
avfilter/vf_chromakey: fix formula for calculation of difference
Diffstat (limited to 'libavfilter/vf_chromakey.c')
| -rw-r--r-- | libavfilter/vf_chromakey.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavfilter/vf_chromakey.c b/libavfilter/vf_chromakey.c index ce8003657c..4b1669d084 100644 --- a/libavfilter/vf_chromakey.c +++ b/libavfilter/vf_chromakey.c @@ -56,7 +56,7 @@ static uint8_t do_chromakey_pixel(ChromakeyContext *ctx, uint8_t u[9], uint8_t v du = (int)u[i] - ctx->chromakey_uv[0]; dv = (int)v[i] - ctx->chromakey_uv[1]; - diff += sqrt((du * du + dv * dv) / (255.0 * 255.0)); + diff += sqrt((du * du + dv * dv) / (255.0 * 255.0 * 2)); } diff /= 9.0; @@ -78,7 +78,7 @@ static uint16_t do_chromakey_pixel16(ChromakeyContext *ctx, uint16_t u[9], uint1 du = (int)u[i] - ctx->chromakey_uv[0]; dv = (int)v[i] - ctx->chromakey_uv[1]; - diff += sqrt((du * du + dv * dv) / (max * max)); + diff += sqrt((du * du + dv * dv) / (max * max * 2)); } diff /= 9.0; |