Calculating the Minimum and The Maximum of a Slidig Window
조회 수: 1 (최근 30일)
이전 댓글 표시
Hello,
How would you create the fastest implementation to extract the Minimum and the Maximum of a Local Sliding Window over an image?
So far I used this:
localMaxImage = colfilt(inputImage, [winLength winLength], 'sliding', @max);
localMinImage = colfilt(inputImage, [winLength winLength], 'sliding', @min);
Yet it is really slow. I know I can use `imerode` and `imdilate`, Yet I'm looking for a toolbox free implementation. Thank You.
댓글 수: 2
José-Luis
2014년 9월 8일
편집: Image Analyst
2014년 9월 11일
Royi, you have asked 23 questions in this forum so far and not accepted a single one. Have you had bad luck with your answers? If not, seeing that might make contributors here less inclined to help you.
채택된 답변
Matt J
2014년 9월 11일
I've never used it, but this FEX contribution is MEX-driven, and so should be fast
댓글 수: 0
추가 답변 (1개)
Anand
2014년 9월 11일
What do you mean toolbox-free? colfilt is also from the Image Processing Toolbox. Can you use ordfilt2
localMaxImage = ordfilt2(inputImage, winLength^2, true(winLength));
localMinImage = ordfilt2(inputImage, 1 , true(winLength));
This should be faster than colfilt, but maybe you can't use it.
참고 항목
카테고리
Help Center 및 File Exchange에서 Computer Vision with Simulink에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!