Change the pixel value of certain region in Binary image to 0

Hello,

I have a binary image where the circle are detected using imfindcircles().

[centers, radii] = imfindcircles(bw2,[40 160],'Sensitivity',0.89,'ObjectPolarity','dark');

These circles are marked with blue color line using viscircles.

[h,x,y]=viscircles(centersStrong, radiiStrong,'EdgeColor','b');

Now i want to change the pixel value inside these blue circles to 0.

I tried using imfill() ,but that is not giving me the required result. It would be grateful if you let which function can be used to do this.

I am attaching here the image with circles marked with blue color.

Looking forward to hear from you at the earliest.

Thanks Pankaja

Answer 1

[Walter Roberson]

http://matlab.wikia.com/wiki/FAQ#How_do_I_create_a_circle.3F