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guided filter: proper bounding of the radius before calling boxblur

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Alberto Griggio
2018-10-11 13:41:41 +02:00
parent 02a15bc58d
commit f5d566ef22
2 changed files with 3 additions and 1 deletions
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2
rtengine/boxblur.h
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@@ -35,6 +35,8 @@ namespace rtengine
template<class T, class A> void boxblur (T** src, A** dst, int radx, int rady, int W, int H) template<class T, class A> void boxblur (T** src, A** dst, int radx, int rady, int W, int H)
{ {
//box blur image; box range = (radx,rady) //box blur image; box range = (radx,rady)
assert(2*radx+1 < W);
assert(2*rady+1 < H);
AlignedBuffer<float>* buffer = new AlignedBuffer<float> (W * H); AlignedBuffer<float>* buffer = new AlignedBuffer<float> (W * H);
float* temp = buffer->data; float* temp = buffer->data;

2
rtengine/guidedfilter.cc
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@@ -110,7 +110,7 @@ void guidedFilter(const array2D<float> &guide, const array2D<float> &src, array2
const auto f_mean = const auto f_mean =
[](array2D<float> &d, array2D<float> &s, int rad) -> void [](array2D<float> &d, array2D<float> &s, int rad) -> void
{ {
rad = min(rad, s.width() / 2, s.height() / 2); rad = LIM(rad, 0, (min(s.width(), s.height()) - 1) / 2 - 1);
boxblur<float, float>(s, d, rad, rad, s.width(), s.height()); boxblur<float, float>(s, d, rad, rad, s.width(), s.height());
}; };