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use Scharr operator instead of Sobel operator for edge detection

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This commit is contained in:
Rudolf Polzer 2010-08-28 11:20:59 +02:00
parent db5c45ff17
commit 443b4bfa9f
1 changed files with 4 additions and 4 deletions
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8
misc/tools/fft-normalmap-to-heightmap.c
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@ -354,11 +354,11 @@ void hmap_to_nmap_local(unsigned char *map, int w, int h, int src_chan, double s
int i, j;
double *img_reduced = malloc(w*h * sizeof(double));
static const double filter[3][3] = { /* filter to derive one component */
{ -1, 0, 1 },
{ -2, 0, 2 },
{ -1, 0, 1 }
{ -3, 0, 3 },
{ -10, 0, 10 },
{ -3, 0, 3 }
};
static const double filter_mult = 0.125;
static const double filter_mult = 0.03125;
for(y = 0; y < h; ++y)
for(x = 0; x < w; ++x)