how to remove black margines automatically from images?
조회 수: 13 (최근 30일)
이전 댓글 표시
how can i automatically remove black margines around border of an image,like the dark lines remains around an image when you scan it,there is also this link which describes about this,but can any one gives a better code,thanx http://uk.mathworks.com/matlabcentral/answers/128133-automatically-trim-remove-crop-black-borders-margins-from-images-volumes i also used imclearborder,but it wont work on my image,
댓글 수: 4
채택된 답변
Image Analyst
2015년 1월 30일
I'm not sure why that is a problem. Just find the first and last column and crop like I suggested:
horizontalProfile = mean(grayImage, 1) > 10; % Or whatever.
firstColumn = find(horizontalProfile, 1, 'first');
lastColumn = = find(horizontalProfile, 1, 'last');
subImage = grayImage(:, firstColumn, lastColumn);
Is there a problem with that? I think it should handle the cases you mentioned. Does it not?
댓글 수: 5
Image Analyst
2020년 1월 4일
Oh, sorry - I didn't read closely enough, or I misinterpreted.
To get the bounding box of everything, here is one way
[r, c] = find(binaryImage);
row1 = min(r);
row2 = max(r);
col1 = min(c);
col2 = max(c);
croppedImage = grayImage(row1:row2, col1:col2);
추가 답변 (0개)
참고 항목
카테고리
Help Center 및 File Exchange에서 Language Support에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!