How can I use the GPU accelerated imdilate function for 3D logical Arrays?
조회 수: 2 (최근 30일)
이전 댓글 표시
At the moment I am developing a region growing algorithm in which I use the imdilate function to iterative expand the region of interest. From a performance test I noticed that I use the imdilate function numerous times during the process, which took 80% of my computational time. Therefore, I wanted to accelerate the region growing algorithm by using the graphic processing unit (GPU) for the whole process. However, the imdilate function does not support three-dimensional structuring elements for gpuArrays.
So the question is: How can I use the GPU accelerated imdilate function for 3D logical Arrays?
Example code:
A = rand(300,300,250);
B = A < 0.2;
D = imdilate(B, true(3,3,3)); % CPU method
B2 = gpuArray(B);
D2 = imdilate(B2, true(3,3,3)); % GPU method that does not work
D3 = imdilate(imdilate(imdilate(B2, true(3,1,1)), true(1,3,1)), true(1,1,3)); % second GPU method that does not work
댓글 수: 0
답변 (1개)
Simão Faria
2018년 3월 28일
D2 = imdilate(B2, true(3,3,3,'gpuArray'));
Both the matrix and the kernel should be gpuArrays
댓글 수: 0
참고 항목
카테고리
Help Center 및 File Exchange에서 GPU Computing에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!