星空图片的阈值化处理！

#include <stdio.h> #include <cv.h> #include <highgui.h> CvFont font; IplImage* src = 0; void main(int argc, char** argv) { if( argc == 2 && (src=cvLoadImage(argv[1], 1))!= 0) {// Create a named window with a the name of the file. cvNamedWindow( "1.jpg", 1 ); cvNamedWindow( "1", 1 ); // Load the image from the given file name. // cvLoadImage( "2.jpg" ); //IplImage* dst =0; // int x= *(src->imageData+280*src->widthStep+30); // printf("%d",x); // cvInitFont(&font,CV_FONT_HERSHEY_PLAIN,1.0,1.0,0,2,8); // cvPutText(src,"H!",cvPoint(380, 30),&font,cvScalar(255,0,0,1)); cvShowImage( "1", src ); // Truncate values above 100. cvThreshold( src, src,230, 255, CV_THRESH_BINARY); // Show the image in the named window cvShowImage( "1.jpg", src ); cvWaitKey(0); // Idle until the user hits the "Esc" key. // Clean up and don’t be piggies cvDestroyWindow( "1.jpg" ); cvReleaseImage( &src ); // cvReleaseImage( &dst ); } }