--- /dev/null
+#!/usr/bin/python
+import sys
+import random
+from opencv.cv import *
+from opencv.highgui import *
+
+color_img0=None;
+mask=None;
+color_img=None;
+gray_img0 = None;
+gray_img = None;
+ffill_case = 1;
+lo_diff = 20
+up_diff = 20;
+connectivity = 4;
+is_color = 1;
+is_mask = 0;
+new_mask_val = 255;
+
+def update_lo( pos ):
+ lo_diff = pos
+def update_up( pos ):
+ up_diff = pos
+
+def on_mouse( event, x, y, flags, param ):
+
+ if( not color_img ):
+ return;
+
+ if event==CV_EVENT_LBUTTONDOWN:
+ comp = CvConnectedComp()
+ my_mask = None
+ seed = cvPoint(x,y);
+ if ffill_case==0:
+ lo = up = 0
+ flags = connectivity + (new_mask_val << 8)
+ else:
+ lo = lo_diff;
+ up = up_diff;
+ flags = connectivity + (new_mask_val << 8) + CV_FLOODFILL_FIXED_RANGE
+ b = random.randint(0,255)
+ g = random.randint(0,255)
+ r = random.randint(0,255)
+
+ if( is_mask ):
+ my_mask = mask
+ cvThreshold( mask, mask, 1, 128, CV_THRESH_BINARY );
+
+ if( is_color ):
+
+ color = CV_RGB( r, g, b );
+ cvFloodFill( color_img, seed, color, CV_RGB( lo, lo, lo ),
+ CV_RGB( up, up, up ), comp, flags, my_mask );
+ cvShowImage( "image", color_img );
+
+ else:
+
+ brightness = cvRealScalar((r*2 + g*7 + b + 5)/10);
+ cvFloodFill( gray_img, seed, brightness, cvRealScalar(lo),
+ cvRealScalar(up), comp, flags, my_mask );
+ cvShowImage( "image", gray_img );
+
+
+ print "%g pixels were repainted" % comp.area;
+
+ if( is_mask ):
+ cvShowImage( "mask", mask );
+
+
+
+
+if __name__ == "__main__":
+
+ filename = "../c/fruits.jpg"
+ if len(sys.argv)>1:
+ filename=argv[1]
+
+ color_img0 = cvLoadImage(filename,1)
+ if not color_img0:
+ print "Could not open %s" % filename
+ sys.exit(-1)
+
+ print "Hot keys:"
+ print "\tESC - quit the program"
+ print "\tc - switch color/grayscale mode"
+ print "\tm - switch mask mode"
+ print "\tr - restore the original image"
+ print "\ts - use null-range floodfill"
+ print "\tf - use gradient floodfill with fixed(absolute) range"
+ print "\tg - use gradient floodfill with floating(relative) range"
+ print "\t4 - use 4-connectivity mode"
+ print "\t8 - use 8-connectivity mode"
+
+ color_img = cvCloneImage( color_img0 );
+ gray_img0 = cvCreateImage( cvSize(color_img.width, color_img.height), 8, 1 );
+ 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", 1 );
+ cvCreateTrackbar( "lo_diff", "image", lo_diff, 255, update_lo);
+ cvCreateTrackbar( "up_diff", "image", up_diff, 255, update_up);
+
+ cvSetMouseCallback( "image", on_mouse );
+
+ while True:
+ if( is_color ):
+ cvShowImage( "image", color_img );
+ else:
+ cvShowImage( "image", gray_img );
+
+ c = cvWaitKey(0);
+ if c=='\x1b':
+ print("Exiting ...");
+ sys.exit(0)
+ elif c=='c':
+ if( is_color ):
+
+ print("Grayscale mode is set");
+ cvCvtColor( color_img, gray_img, CV_BGR2GRAY );
+ is_color = 0;
+
+ else:
+
+ print("Color mode is set");
+ cvCopy( color_img0, color_img, None );
+ cvZero( mask );
+ is_color = 1;
+
+ elif c=='m':
+ if( is_mask ):
+ cvDestroyWindow( "mask" );
+ is_mask = 0;
+
+ else:
+ cvNamedWindow( "mask", 0 );
+ cvZero( mask );
+ cvShowImage( "mask", mask );
+ is_mask = 1;
+
+ elif c=='r':
+ print("Original image is restored");
+ cvCopy( color_img0, color_img, None );
+ cvCopy( gray_img0, gray_img, None );
+ cvZero( mask );
+ elif c=='s':
+ print("Simple floodfill mode is set");
+ ffill_case = 0;
+ elif c=='f':
+ print("Fixed Range floodfill mode is set");
+ ffill_case = 1;
+ elif c=='g':
+ print("Gradient (floating range) floodfill mode is set");
+ ffill_case = 2;
+ elif c=='4':
+ print("4-connectivity mode is set");
+ connectivity = 4;
+ elif c=='8':
+ print("8-connectivity mode is set");
+ connectivity = 8;