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avfilter/vf_atadenoise: fix mid calculation

This commit is contained in:
Paul B Mahol 2021-01-22 18:18:38 +01:00
parent bb66fd7f90
commit 3ce97d8ddd
1 changed files with 2 additions and 2 deletions
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4
libavfilter/vf_atadenoise.c
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@ -135,7 +135,7 @@ static av_cold int init(AVFilterContext *ctx)
s->size |= 1;
}
s->radius = s->size / 2;
s->mid = s->radius + 1;
s->mid = s->radius;
return 0;
}
@ -429,7 +429,7 @@ static int config_input(AVFilterLink *inlink)
for (int p = 0; p < s->nb_planes; p++) {
float sigma = s->radius * s->sigma[p];
s->weights[p][s->mid] = 1.f;
s->weights[p][s->radius] = 1.f;
for (int n = 1; n <= s->radius; n++) {
s->weights[p][s->radius + n] =
s->weights[p][s->radius - n] = expf(-0.5 * (n + 1) * (n + 1) / (sigma * sigma));