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Fixed extrapolation in pyrDown

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This commit is contained in:
Alexander Karsakov
2014-08-06 11:09:56 +04:00
parent 2a0b39d30a
commit 44fbfb2cf6
2 changed files with 4 additions and 5 deletions
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modules/imgproc/src/opencl/pyr_down.cl
+3 -3
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@@ -53,16 +53,16 @@
#if defined BORDER_REPLICATE
// aaaaaa|abcdefgh|hhhhhhh
#define EXTRAPOLATE(x, maxV) clamp(x, 0, maxV-1)
#define EXTRAPOLATE(x, maxV) clamp((x), 0, (maxV)-1)
#elif defined BORDER_WRAP
// cdefgh|abcdefgh|abcdefg
#define EXTRAPOLATE(x, maxV) ( (x) + (maxV) ) % (maxV)
#elif defined BORDER_REFLECT
// fedcba|abcdefgh|hgfedcb
#define EXTRAPOLATE(x, maxV) min(((maxV)-1)*2-(x)+1, max((x),-(x)-1) )
#define EXTRAPOLATE(x, maxV) clamp(min(((maxV)-1)*2-(x)+1, max((x),-(x)-1) ), 0, (maxV)-1)
#elif defined BORDER_REFLECT_101 || defined BORDER_REFLECT101
// gfedcb|abcdefgh|gfedcba
#define EXTRAPOLATE(x, maxV) min(((maxV)-1)*2-(x), max((x),-(x)) )
#define EXTRAPOLATE(x, maxV) clamp(min(((maxV)-1)*2-(x), max((x),-(x)) ), 0, (maxV)-1)
#else
#error No extrapolation method
#endif