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avfilter/avf_showcwt: make kernels symmetrical

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This commit is contained in:
Paul B Mahol 2023-07-29 11:21:28 +02:00
parent 6f6907fd20
commit 44813d66e2
1 changed files with 1 additions and 1 deletions
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libavfilter/avf_showcwt.c
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@ -655,7 +655,7 @@ static int compute_kernel(AVFilterContext *ctx)
memset(tkernel, 0, size * sizeof(*tkernel));
for (int n = 0; n < size; n++) {
float ff, f = n-frequency;
float ff, f = n+0.5f-frequency;
f = hsize - fabsf(f - hsize);
ff = expf(-f*f*deviation);