Krisch边缘检测算子边缘检测

【Krisch边缘检测算子】由8个卷积核组成Krisch边缘检测算子， 8个卷积核分别对图像卷积，取最大值点作为边缘点。

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#include"cv.h" #include "highgui.h"void Krisch(CvMat* gray, CvMat* edge); int main() { IplImage *src = https://www.it610.com/article/cvLoadImage("flower.jpg",1); const int width = src->width; const int height = src->height; CvMat *gray = cvCreateMat(height, width, CV_8UC1); cvCvtColor(src, gray, CV_BGR2GRAY); CvMat *edge = cvCreateMat(height, width, CV_8UC1); Krisch(gray, edge); cvShowImage("SRC", src); cvShowImage("GRAY", gray); cvShowImage("ROBERTS", edge); cvWaitKey(0); cvCvtColor(gray, src, CV_GRAY2BGR); cvSaveImage("GRAY.bmp", src); cvCvtColor(edge, src, CV_GRAY2BGR); cvSaveImage("EDGE.bmp", src); cvReleaseMat(&gray); cvReleaseMat(&edge); return 0; } void Krisch(CvMat* gray, CvMat* edge) { const int width = gray->width; const int height = gray->height; cvZero(edge); CvMat* edgeTemp1 = cvCreateMat(height, width, CV_16SC1); CvMat* edgeTemp2 = cvCreateMat(height, width, CV_16SC1); CvMat* edgeTemp3 = cvCreateMat(height, width, CV_16SC1); CvMat* edgeTemp4 = cvCreateMat(height, width, CV_16SC1); CvMat* edgeTemp5 = cvCreateMat(height, width, CV_16SC1); CvMat* edgeTemp6 = cvCreateMat(height, width, CV_16SC1); CvMat* edgeTemp7 = cvCreateMat(height, width, CV_16SC1); CvMat* edgeTemp8 = cvCreateMat(height, width, CV_16SC1); cvZero(edgeTemp1); cvZero(edgeTemp2); cvZero(edgeTemp3); cvZero(edgeTemp4); cvZero(edgeTemp5); cvZero(edgeTemp6); cvZero(edgeTemp7); cvZero(edgeTemp8); int Template1[9] = {5,5,5, -3,0,-3, -3,-3,-3 }; int Template2[9] = { -3,5,5, -3,0,5, -3,-3,-3 }; int Template3[9] = { -3,-3,5, -3,0,5, -3,-3,5 }; int Template4[9] = { -3,-3,-3, -3,0,5, -3,5,5 }; int Template5[9] = { -3,-3,-3, -3,0,-3, 5,5,5 }; int Template6[9] = {-3,-3,-3, 5,0,-3, 5,5,-3 }; int Template7[9] = {5,-3,-3, 5,0,-3, 5,-3,-3 }; int Template8[9] = {5,5,-3, 5,0,-3, -3,-3,-3 }; for (int j = 1; j < height - 1; j ++) { int* edgeTemp1Data = https://www.it610.com/article/(int*)(edgeTemp1->data.ptr + j * edgeTemp1->step); for (int i = 1; i < width - 1; i ++) { for (int k = 0; k < 3; k ++) { for (int l = 0; l < 3; l ++) { edgeTemp1Data[i] += Template1[3 * k + l] * ((uchar*)(gray->data.ptr + (j + k - 1) * gray->step))[i + l - 1]; } }} } for (int j = 1; j < height - 1; j ++) { int* edgeTemp2Data = https://www.it610.com/article/(int*)(edgeTemp2->data.ptr + j * edgeTemp2->step); for (int i = 1; i < width - 1; i ++) { for (int k = 0; k < 3; k ++) { for (int l = 0; l < 3; l ++) { edgeTemp2Data[i] += Template2[3 * k + l] * ((uchar*)(gray->data.ptr + (j + k - 1) * gray->step))[i + l - 1]; } }} } for (int j = 1; j < height - 1; j ++) { int* edgeTemp3Data = https://www.it610.com/article/(int*)(edgeTemp3->data.ptr + j * edgeTemp3->step); for (int i = 1; i < width - 1; i ++) { for (int k = 0; k < 3; k ++) { for (int l = 0; l < 3; l ++) { edgeTemp3Data[i] += Template3[3 * k + l] * ((uchar*)(gray->data.ptr + (j + k - 1) * gray->step))[i + l - 1]; } }} } for (int j = 1; j < height - 1; j ++) { int* edgeTemp4Data = https://www.it610.com/article/(int*)(edgeTemp4->data.ptr + j * edgeTemp4->step); for (int i = 1; i < width - 1; i ++) { for (int k = 0; k < 3; k ++) { for (int l = 0; l < 3; l ++) { edgeTemp4Data[i] += Template4[3 * k + l] * ((uchar*)(gray->data.ptr + (j + k - 1) * gray->step))[i + l - 1]; } }} } for (int j = 1; j < height - 1; j ++) { int* edgeTemp5Data = https://www.it610.com/article/(int*)(edgeTemp5->data.ptr + j * edgeTemp5->step); for (int i = 1; i < width - 1; i ++) { for (int k = 0; k < 3; k ++) { for (int l = 0; l < 3; l ++) { edgeTemp5Data[i] += Template5[3 * k + l] * ((uchar*)(gray->data.ptr + (j + k - 1) * gray->step))[i + l - 1]; } }} } for (int j = 1; j < height - 1; j ++) { int* edgeTemp6Data = https://www.it610.com/article/(int*)(edgeTemp6->data.ptr + j * edgeTemp6->step); for (int i = 1; i < width - 1; i ++) { for (int k = 0; k < 3; k ++) { for (int l = 0; l < 3; l ++) { edgeTemp6Data[i] += Template6[3 * k + l] * ((uchar*)(gray->data.ptr + (j + k - 1) * gray->step))[i + l - 1]; } }} } for (int j = 1; j < height - 1; j ++) { int* edgeTemp7Data = https://www.it610.com/article/(int*)(edgeTemp7->data.ptr + j * edgeTemp7->step); for (int i = 1; i < width - 1; i ++) { for (int k = 0; k < 3; k ++) { for (int l = 0; l < 3; l ++) { edgeTemp7Data[i] += Template7[3 * k + l] * ((uchar*)(gray->data.ptr + (j + k - 1) * gray->step))[i + l - 1]; } }} } for (int j = 1; j < height - 1; j ++) { int* edgeTemp8Data = https://www.it610.com/article/(int*)(edgeTemp8->data.ptr + j * edgeTemp8->step); for (int i = 1; i < width - 1; i ++) { for (int k = 0; k < 3; k ++) { for (int l = 0; l < 3; l ++) { edgeTemp8Data[i] += Template8[3 * k + l] * ((uchar*)(gray->data.ptr + (j + k - 1) * gray->step))[i + l - 1]; } }} } int temp[8] = {0, 0, 0, 0, 0, 0, 0, 0}; for (int j = 0; j < height; j ++) { uchar* edgeData = https://www.it610.com/article/(uchar*)(edge->data.ptr + j * gray->step); int* edgeTemp1Data = https://www.it610.com/article/(int*)(edgeTemp1->data.ptr + j * edgeTemp1->step); int* edgeTemp2Data = https://www.it610.com/article/(int*)(edgeTemp2->data.ptr + j * edgeTemp2->step); int* edgeTemp3Data = https://www.it610.com/article/(int*)(edgeTemp3->data.ptr + j * edgeTemp3->step); int* edgeTemp4Data = https://www.it610.com/article/(int*)(edgeTemp4->data.ptr + j * edgeTemp4->step); int* edgeTemp5Data = https://www.it610.com/article/(int*)(edgeTemp5->data.ptr + j * edgeTemp5->step); int* edgeTemp6Data = https://www.it610.com/article/(int*)(edgeTemp6->data.ptr + j * edgeTemp6->step); int* edgeTemp7Data = https://www.it610.com/article/(int*)(edgeTemp7->data.ptr + j * edgeTemp7->step); int* edgeTemp8Data = https://www.it610.com/article/(int*)(edgeTemp8->data.ptr + j * edgeTemp8->step); for (int i = 0; i < width; i ++) { temp[0] = edgeTemp1Data[i]; temp[1] = edgeTemp2Data[i]; temp[2] = edgeTemp3Data[i]; temp[3] = edgeTemp4Data[i]; temp[4] = edgeTemp5Data[i]; temp[5] = edgeTemp6Data[i]; temp[6] = edgeTemp7Data[i]; temp[7] = edgeTemp8Data[i]; int value = https://www.it610.com/article/0; for (int k = 0; k< 8; k++) { value = temp[k]> value ?temp[k] : value; }if(value > 255) value = https://www.it610.com/article/255; if(value < 0) value = 0; edgeData[i] = value; } } cvReleaseMat(&edgeTemp1); cvReleaseMat(&edgeTemp2); cvReleaseMat(&edgeTemp3); cvReleaseMat(&edgeTemp4); cvReleaseMat(&edgeTemp5); cvReleaseMat(&edgeTemp6); cvReleaseMat(&edgeTemp7); cvReleaseMat(&edgeTemp8); }

原图、灰度图和边缘图如下所示