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#!/usr/bin/python
import sys
from opencv.cv import *
from opencv.highgui import *
src = 0;
image = 0;
dest = 0;
element = 0;
element_shape = CV_SHAPE_RECT;
global_pos = 0;
def Opening(pos):
element = cvCreateStructuringElementEx( pos*2+1, pos*2+1, pos, pos, element_shape, None );
cvErode(src,image,element,1);
cvDilate(image,dest,element,1);
cvShowImage("Opening&Closing window",dest);
def Closing(pos):
element = cvCreateStructuringElementEx( pos*2+1, pos*2+1, pos, pos, element_shape, None );
cvDilate(src,image,element,1);
cvErode(image,dest,element,1);
cvShowImage("Opening&Closing window",dest);
def Erosion(pos):
element = cvCreateStructuringElementEx( pos*2+1, pos*2+1, pos, pos, element_shape, None );
cvErode(src,dest,element,1);
cvShowImage("Erosion&Dilation window",dest);
def Dilation(pos):
element = cvCreateStructuringElementEx( pos*2+1, pos*2+1, pos, pos, element_shape, None );
cvDilate(src,dest,element,1);
cvShowImage("Erosion&Dilation window",dest);
if __name__ == "__main__":
filename = "../c/baboon.jpg"
if len(sys.argv)==2:
filename = sys.argv[1]
src = cvLoadImage(filename,1)
if not src:
sys.exit(-1)
image = cvCloneImage(src);
dest = cvCloneImage(src);
cvNamedWindow("Opening&Closing window",1);
cvNamedWindow("Erosion&Dilation window",1);
cvShowImage("Opening&Closing window",src);
cvShowImage("Erosion&Dilation window",src);
cvCreateTrackbar("Open","Opening&Closing window",global_pos,10,Opening);
cvCreateTrackbar("Close","Opening&Closing window",global_pos,10,Closing);
cvCreateTrackbar("Dilate","Erosion&Dilation window",global_pos,10,Dilation);
cvCreateTrackbar("Erode","Erosion&Dilation window",global_pos,10,Erosion);
cvWaitKey(0);
cvDestroyWindow("Opening&Closing window");
cvDestroyWindow("Erosion&Dilation window");