Radon transform and Prewitt filters for hair removal
조회 수: 1 (최근 30일)
이전 댓글 표시
Hi All,
I'm working on dermoscopic images (skin cancer images)that contains a light and thick hair,how can detect the predominant orientation of hairs in the image by using Radon transform, followed by filtering the image by Prewitt filters using the orientation of existing hairs I tried to write this code :
if true
% %%Radon transform and Prewitt filters
rgbImage = imread('hair.bmp');
redChannel =rgbImage(:, :, 1);
greenChannel =rgbImage(:, :, 2);
blueChannel =rgbImage(:, :, 3);
theta = 0:180;
[R,xp] = radon(rgbImage,theta);
BW = edge(rgbImage,'prewitt',[],xp);
imshow(R)
imshow(BW)
end
but I've got this error message :
Error using edge>parse_inputs (line 607) Invalid input arguments.
Error in edge (line 190) [a,method,thresh,sigma,thinning,H,kx,ky] = parse_inputs(varargin{:});
Error in Untitled2 (line 12) BW = edge(rgbImage,'prewitt',[],xp);
I attached a bitmap image contains hair called (hair.bmp),could any one guid me please because I'm really stuck in my project,thanks in advance. Hamed
답변 (3개)
Image Analyst
2013년 9월 29일
The documentation for edge() says:
Class Support
I is a nonsparse 2-D numeric array.
BW isa 2-D array of class logical.
rgbImage is not a 2D image - it's a 3D color image. You need to pass one of the color channels you extracted into edge(), not the full RGB image.
BW = edge(greenChannel,'prewitt',[],xp);
댓글 수: 8
asma arafat
2017년 5월 9일
how i can remove eyebrows from an image to use edge detectors after that and i don't need eyebrows to detect as edge. any help!!?
참고 항목
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!