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opencv_ex10-讀取圖檔時轉灰階IMREAD_GRAYSCALE、設定門閥值灰階轉二值化threshold、腐蝕(侵蝕)erode、膨脹dilate、得到要進行侵蝕或膨脹的模板getStructuringElement GITHUB: https://github.com/jash-git/CPP_opencv249_ex http://monkeycoding.com/?p=577     膨脹->白色越多          腐蝕->黑色越多 #include #include #include #include #include #include #include #if defined(WIN32) #define TIMEB _timeb #define ftime _ftime typedef __int64 TIME_T; #else #define TIMEB timeb typedef long long TIME_T; #endif using namespace cv; using namespace std; Mat src;//input image Mat src2; Mat dst01,dst02; char OUTPUT_WIN01[] = "output-dilate"; char OUTPUT_WIN02[] = "output-erode"; int element_size = 3; int max_size = 21; void CallBack_Demo01(int, void*); void CallBack_Demo02(int, void*); void Pause() { printf("Press Enter key to continue..."); fgetc(stdin); } int main() { src = imread("bgImage.jpg",IMREAD_GRAYSCALE); if (!src.data) { printf("could not load image...\n"); } else { threshold(src,src2,120,255,THRESH_BINARY);//設定門閥值灰階轉二值化 < 120->0,>120->255 namedWindow("Lena_original", CV_WINDOW_AUTOSIZE); imshow("Lena_original", src); namedWindow("Lena_BINARY", CV_WINDOW_AUTOSIZE); imshow("Lena_BINARY", src2); namedWindow(OUTPUT_WIN01, CV_WINDOW_AUTOSIZE); createTrackbar("Element Size :", OUTPUT_WIN01, &element_size, max_size, CallBack_Demo01); CallBack_Demo01(0, 0); namedWindow(OUTPUT_WIN02, CV_WINDOW_AUTOSIZE); createTrackbar("Element Size :", OUTPUT_WIN02, &element_size, max_size, CallBack_Demo02); CallBack_Demo02(0, 0); } waitKey(0); return 0; } void CallBack_Demo01(int, void*) { int s = element_size * 2 + 1; Mat structureElement = getStructuringElement(MORPH_RECT, Size(s, s), Point(-1, -1)); dilate(src2, dst01, structureElement, Point(-1, -1), 1);//膨脹->白色越多 imshow(OUTPUT_WIN01, dst01); return; } void CallBack_Demo02(int, void*) { int s = element_size * 2 + 1; Mat structureElement = getStructuringElement(MORPH_RECT, Size(s, s), Point(-1, -1)); erode(src2, dst02, structureElement);//腐蝕->黑色越多 imshow(OUTPUT_WIN02, dst02); return; }