图像域的填充

 #include "cv.h"#include "highgui.h"#include <stdio.h>#include <stdlib.h>IplImage* color_img0;IplImage* mask;IplImage* color_img;IplImage* gray_img0 = NULL;IplImage* gray_img = NULL;int ffill_case = 1;int lo_diff = 20, up_diff = 20;int connectivity = 4;int is_color = 1;int is_mask = 0;int new_mask_val = 255;void on_mouse( int event, int x, int y, int flags, void* param ){ if( !color_img ) return; switch( event ) { case CV_EVENT_LBUTTONDOWN: { CvPoint seed = cvPoint(x,y);//种子点设置 int lo = (ffill_case == 0) ? 0 : lo_diff; int up = (ffill_case == 0) ? 0 : up_diff;//设置标志低位为connectivity 高位为0 或CV_FLOODFILL_FIXED_RANGE/only int flags = connectivity + (new_mask_val << 8) + (ffill_case == 1 ? CV_FLOODFILL_FIXED_RANGE : 0);//随机产生不大于255的数 int b = rand() & 255, g = rand() & 255, r = rand() & 255;//指向部件结构体的指针 CvConnectedComp comp; if( is_mask )//对模板进行阈值处理 cvThreshold( mask, mask, 1, 128, CV_THRESH_BINARY ); if( is_color ) { CvScalar color = CV_RGB( r, g, b ); cvFloodFill( color_img, seed, color, CV_RGB( lo, lo, lo ),/*为一CvScalar型有三个通道*/ CV_RGB( up, up, up ), &comp, flags, is_mask ? mask : NULL ); cvShowImage( "image", color_img ); } else { CvScalar brightness = cvRealScalar((r*2 + g*7 + b + 5)/10);//？？？？ cvFloodFill( gray_img, seed, brightness, cvRealScalar(lo),/*单通道的操作只有一个值就是*/ cvRealScalar(up), &comp, flags, is_mask ? mask : NULL ); cvShowImage( "image", gray_img ); }//输出连通域的面积 printf("%g pixels were repainted/n", comp.area ); if( is_mask ) cvShowImage( "mask", mask ); } break; }}int main( int argc, char** argv ){ char* filename = argc >= 2 ? argv[1] : (char*)"lena.jpg"; if( (color_img0 = cvLoadImage(filename,1)) == 0 ) return 0; printf( "Hot keys: /n" "/tESC - quit the program/n" "/tc - switch color/grayscale mode/n" "/tm - switch mask mode/n" "/tr - restore the original image/n" "/ts - use null-range floodfill/n" "/tf - use gradient floodfill with fixed(absolute) range/n" "/tg - use gradient floodfill with floating(relative) range/n" "/t4 - use 4-connectivity mode/n" "/t8 - use 8-connectivity mode/n" ); color_img = cvCloneImage( color_img0 );gray_img0 = cvCreateImage( cvSize(color_img->width, color_img->height), 8, 1 );//转换成灰度图像 cvCvtColor( color_img, gray_img0, CV_BGR2GRAY ); gray_img = cvCloneImage( gray_img0 ); mask = cvCreateImage( cvSize(color_img->width + 2, color_img->height + 2), 8, 1 ); cvNamedWindow( "image", 0 ); cvCreateTrackbar( "lo_diff", "image", &lo_diff, 255, NULL );//创TRACKBAR cvCreateTrackbar( "up_diff", "image", &up_diff, 255, NULL );//对鼠标作出反应 cvSetMouseCallback( "image", on_mouse, 0 ); for(;;) { int c; if( is_color ) cvShowImage( "image", color_img ); else cvShowImage( "image", gray_img ); c = cvWaitKey(0); switch( (char) c ) { case '/x1b': printf("Exiting .../n"); goto exit_main;//注意转跳 case 'c'://按下C时可对彩色与灰度图像进行转换 if( is_color ) { printf("Grayscale mode is set/n"); cvCvtColor( color_img, gray_img, CV_BGR2GRAY ); is_color = 0; } else { printf("Color mode is set/n"); cvCopy( color_img0, color_img, NULL ); cvZero( mask ); is_color = 1; } break; case 'm': if( is_mask ) { cvDestroyWindow( "mask" ); is_mask = 0; } else { cvNamedWindow( "mask", 0 ); cvZero( mask ); cvShowImage( "mask", mask ); is_mask = 1; } break; case 'r': printf("Original image is restored/n"); cvCopy( color_img0, color_img, NULL ); cvCopy( gray_img0, gray_img, NULL ); cvZero( mask ); break; case 's': printf("Simple floodfill mode is set/n"); ffill_case = 0; break; case 'f': printf("Fixed Range floodfill mode is set/n"); ffill_case = 1; break; case 'g': printf("Gradient (floating range) floodfill mode is set/n"); ffill_case = 2; break; case '4': printf("4-connectivity mode is set/n"); connectivity = 4; break; case '8': printf("8-connectivity mode is set/n"); connectivity = 8; break; } }exit_main: cvDestroyWindow( "test" ); cvReleaseImage( &gray_img ); cvReleaseImage( &gray_img0 ); cvReleaseImage( &color_img ); cvReleaseImage( &color_img0 ); cvReleaseImage( &mask ); return 1;}