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guided filter: reuse buffer across boxblur invocations

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This commit is contained in:
Alberto Griggio 2018-10-26 18:04:07 +02:00
parent 2026fe1d17
commit c4ee5e611d
1 changed files with 5 additions and 2 deletions
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7
rtengine/guidedfilter.cc
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@ -135,11 +135,14 @@ void guidedFilter(const array2D<float> &guide, const array2D<float> &src, array2
const array2D<float> &p = src;
array2D<float> &q = dst;
AlignedBuffer<float> blur_buf(I.width() * I.height());
const auto f_mean =
[](array2D<float> &d, array2D<float> &s, int rad) -> void
[&](array2D<float> &d, array2D<float> &s, int rad) -> void
{
rad = LIM(rad, 0, (min(s.width(), s.height()) - 1) / 2 - 1);
boxblur<float, float>(s, d, rad, rad, s.width(), s.height());
float **src = s;
float **dst = d;
boxblur<float, float>(src, dst, blur_buf.data, rad, rad, s.width(), s.height());
};
const auto f_subsample =