how to get a crop a circluar region
조회 수: 1 (최근 30일)
이전 댓글 표시
i wanted to crop a circular region as shown
please can someone help me....
to get the output (a) i used the below code in link
http://stackoverflow.com/questions/19992097/how-to-do-circular-crop-using-matlab
I = imread('patricia.jpg');
imageSize = size(I);
ci = [250, 300, 100]; % center and radius of circle ([c_row, c_col, r])
[xx,yy] = ndgrid((1:imageSize(1))-ci(1),(1:imageSize(2))-ci(2));
mask = uint8((xx.^2 + yy.^2)<ci(3)^2);
croppedImage = uint8(zeros(size(I)));
croppedImage(:,:,1) = I(:,:,1).*mask;
croppedImage(:,:,2) = I(:,:,2).*mask;
croppedImage(:,:,3) = I(:,:,3).*mask;
imshow(croppedImage);
but the cropping is not coming correctly.... if i binarize and use regionprops the circle is being distorted... please do help
댓글 수: 0
채택된 답변
Walter Roberson
2016년 2월 1일
If the circle is displaying as an ellipse then you need to give the command
axis image
or do the equivalent (axes DataAspect property)
댓글 수: 0
추가 답변 (0개)
참고 항목
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!