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add median filter

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This commit is contained in:
Edward Emelianov
2021-08-24 12:19:52 +03:00
parent 9d76c96602
commit 4ef3ae7605
12 changed files with 206 additions and 126 deletions
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28
LocCorr/imagefile.c
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@@ -128,18 +128,25 @@ Image *u8toImage(uint8_t *data, int width, int height, int stride){
outp->width = width;
outp->height = height;
outp->dtype = FLOAT_IMG;
uint8_t min = *data, max = min;
for(int y = 0; y < height; ++y){
uint8_t *ptr = &data[y*stride];
for(int x = 0; x < width; ++x){
uint8_t p = *ptr++;
if(p < min) min = p;
else if(p > max) max = p;
/*
int histogram[256] = {0};
int wh = width*height;
#pragma omp parallel
{
int histogram_private[256] = {0};
#pragma omp for nowait
for(int i = 0; i < wh; ++i){
++histogram_private[data[i]];
}
#pragma omp critical
{
for(int i=0; i<256; ++i) histogram[i] += histogram_private[i];
}
}
outp->minval = (Imtype) min;
outp->maxval = (Imtype) max;
//DBG("\nMAX=%g, MIN=%g\n", outp->maxval, outp->minval);
red("HISTO:\n");
for(int i = 0; i < 256; ++i) printf("%d:\t%d\n", i, histogram[i]);
*/
outp->data = MALLOC(Imtype, width*height);
// flip image updown for FITS coordinate system
OMP_FOR()
@@ -150,6 +157,7 @@ Image *u8toImage(uint8_t *data, int width, int height, int stride){
*Out++ = (Imtype)(*In++);
}
}
Image_minmax(outp);
return outp;
}