"atomic bomb" commit. Reorganized OpenCV directory structure

samples/c/edge.c

@@ -0,0 +1,70 @@
+#ifdef _CH_
+#pragma package <opencv>
+#endif
+
+#define CV_NO_BACKWARD_COMPATIBILITY
+
+#ifndef _EiC
+#include "cv.h"
+#include "highgui.h"
+#endif
+
+char wndname[] = "Edge";
+char tbarname[] = "Threshold";
+int edge_thresh = 1;
+
+IplImage *image = 0, *cedge = 0, *gray = 0, *edge = 0;
+
+// define a trackbar callback
+void on_trackbar(int h)
+{
+    cvSmooth( gray, edge, CV_BLUR, 3, 3, 0, 0 );
+    cvNot( gray, edge );
+
+    // Run the edge detector on grayscale
+    cvCanny(gray, edge, (float)edge_thresh, (float)edge_thresh*3, 3);
+
+    cvZero( cedge );
+    // copy edge points
+    cvCopy( image, cedge, edge );
+
+    cvShowImage(wndname, cedge);
+}
+
+int main( int argc, char** argv )
+{
+    char* filename = argc == 2 ? argv[1] : (char*)"fruits.jpg";
+
+    if( (image = cvLoadImage( filename, 1)) == 0 )
+        return -1;
+
+    // Create the output image
+    cedge = cvCreateImage(cvSize(image->width,image->height), IPL_DEPTH_8U, 3);
+
+    // Convert to grayscale
+    gray = cvCreateImage(cvSize(image->width,image->height), IPL_DEPTH_8U, 1);
+    edge = cvCreateImage(cvSize(image->width,image->height), IPL_DEPTH_8U, 1);
+    cvCvtColor(image, gray, CV_BGR2GRAY);
+
+    // Create a window
+    cvNamedWindow(wndname, 1);
+
+    // create a toolbar
+    cvCreateTrackbar(tbarname, wndname, &edge_thresh, 100, on_trackbar);
+
+    // Show the image
+    on_trackbar(0);
+
+    // Wait for a key stroke; the same function arranges events processing
+    cvWaitKey(0);
+    cvReleaseImage(&image);
+    cvReleaseImage(&gray);
+    cvReleaseImage(&edge);
+    cvDestroyWindow(wndname);
+
+    return 0;
+}
+
+#ifdef _EiC
+main(1,"edge.c");
+#endif