2 #pragma package <opencv>
15 IplImage* gray_img0 = NULL;
16 IplImage* gray_img = NULL;
18 int lo_diff = 20, up_diff = 20;
22 int new_mask_val = 255;
24 void on_mouse( int event, int x, int y, int flags, void* param )
31 case CV_EVENT_LBUTTONDOWN:
33 CvPoint seed = cvPoint(x,y);
34 int lo = ffill_case == 0 ? 0 : lo_diff;
35 int up = ffill_case == 0 ? 0 : up_diff;
36 int flags = connectivity + (new_mask_val << 8) +
37 (ffill_case == 1 ? CV_FLOODFILL_FIXED_RANGE : 0);
38 int b = rand() & 255, g = rand() & 255, r = rand() & 255;
42 cvThreshold( mask, mask, 1, 128, CV_THRESH_BINARY );
46 CvScalar color = CV_RGB( r, g, b );
47 cvFloodFill( color_img, seed, color, CV_RGB( lo, lo, lo ),
48 CV_RGB( up, up, up ), &comp, flags, is_mask ? mask : NULL );
49 cvShowImage( "image", color_img );
53 CvScalar brightness = cvRealScalar((r*2 + g*7 + b + 5)/10);
54 cvFloodFill( gray_img, seed, brightness, cvRealScalar(lo),
55 cvRealScalar(up), &comp, flags, is_mask ? mask : NULL );
56 cvShowImage( "image", gray_img );
59 printf("%g pixels were repainted\n", comp.area );
62 cvShowImage( "mask", mask );
68 int main( int argc, char** argv )
70 char* filename = argc >= 2 ? argv[1] : (char*)"fruits.jpg";
72 if( (color_img0 = cvLoadImage(filename,1)) == 0 )
75 printf( "Hot keys: \n"
76 "\tESC - quit the program\n"
77 "\tc - switch color/grayscale mode\n"
78 "\tm - switch mask mode\n"
79 "\tr - restore the original image\n"
80 "\ts - use null-range floodfill\n"
81 "\tf - use gradient floodfill with fixed(absolute) range\n"
82 "\tg - use gradient floodfill with floating(relative) range\n"
83 "\t4 - use 4-connectivity mode\n"
84 "\t8 - use 8-connectivity mode\n" );
86 color_img = cvCloneImage( color_img0 );
87 gray_img0 = cvCreateImage( cvSize(color_img->width, color_img->height), 8, 1 );
88 cvCvtColor( color_img, gray_img0, CV_BGR2GRAY );
89 gray_img = cvCloneImage( gray_img0 );
90 mask = cvCreateImage( cvSize(color_img->width + 2, color_img->height + 2), 8, 1 );
92 cvNamedWindow( "image", 0 );
93 cvCreateTrackbar( "lo_diff", "image", &lo_diff, 255, NULL );
94 cvCreateTrackbar( "up_diff", "image", &up_diff, 255, NULL );
96 cvSetMouseCallback( "image", on_mouse, 0 );
103 cvShowImage( "image", color_img );
105 cvShowImage( "image", gray_img );
111 printf("Exiting ...\n");
116 printf("Grayscale mode is set\n");
117 cvCvtColor( color_img, gray_img, CV_BGR2GRAY );
122 printf("Color mode is set\n");
123 cvCopy( color_img0, color_img, NULL );
131 cvDestroyWindow( "mask" );
136 cvNamedWindow( "mask", 0 );
138 cvShowImage( "mask", mask );
143 printf("Original image is restored\n");
144 cvCopy( color_img0, color_img, NULL );
145 cvCopy( gray_img0, gray_img, NULL );
149 printf("Simple floodfill mode is set\n");
153 printf("Fixed Range floodfill mode is set\n");
157 printf("Gradient (floating range) floodfill mode is set\n");
161 printf("4-connectivity mode is set\n");
165 printf("8-connectivity mode is set\n");
173 cvDestroyWindow( "test" );
174 cvReleaseImage( &gray_img );
175 cvReleaseImage( &gray_img0 );
176 cvReleaseImage( &color_img );
177 cvReleaseImage( &color_img0 );
178 cvReleaseImage( &mask );
184 main(1,"ffilldemo.c");