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*/
// A simple example of calculating distance between pixels
// using Intel IPP function:
// ippiDistanceTransform_3x3_8u_C1R
#include <stdio.h>
#include "ipp.h"
/* Next two defines are created to simplify code reading and understanding */
#define EXIT_MAIN exitLine: /* Label for Exit */
#define check_sts(st) if((st) != ippStsNoErr) goto exitLine; /* Go to Exit if IPP function returned status different from ippStsNoErr */
int main(void)
{
IppStatus status = ippStsNoErr;
Ipp8u pSrc[7 * 7] = { /* Pointer to source image */
1, 2, 3, 4, 5, 6, 7,
1, 0, 3, 4, 5, 6, 7,
1, 2, 3, 4, 5, 6, 7,
1, 2, 3, 0, 5, 6, 7,
1, 2, 3, 4, 5, 6, 7,
1, 2, 3, 4, 5, 0, 7,
1, 2, 3, 4, 5, 6, 7
};
Ipp8u pDst[7 * 7]; /* Pointer to destination image */
int srcStep = 7, dstStep = 7; /* Steps, in bytes, through the source/destination images */
IppiSize roiSize = { 7, 7 }; /* Size of source/destination ROI in pixels */
Ipp32s pMetrics[2] = { 2, 2 }; /* Array that determines metrics used */
/* For every non-zero pixel in the source image, the functions calculate */
/* distance between that pixel and nearest zero pixel. */
check_sts( status = ippiDistanceTransform_3x3_8u_C1R(pSrc, srcStep, pDst, dstStep, roiSize, pMetrics) )
EXIT_MAIN
printf("Exit status %d (%s)\n", (int)status, ippGetStatusString(status));
return (int)status;
}