How to eliminate some useless lines in an image?

1 次查看(过去 30 天)
I would like to know if exist a method that cancels the blue lines directly attached to the yellow shapes; for example obtaining only the pink ones (I only traced in pink some of the lines I need, but obviously this has to be extended to the whole image).
How can I do this? Maybe using some proprierties about pixels within the image? I do not know how to procede....

回答(1 个)

Image Analyst
Image Analyst 2022-6-5
Get a yellow mask, and a blue mask, and use imdilate to dilate the yellow blobs by one pixel layer. Then use the yellow as a marker image on the blue image with imreconstruct(). Then use that to erase those from the RGB image.
Something like (untested):
yellowMask = (rgbImage(:,:,1) == 255) & (rgbImage(:,:,2) == 255) & (rgbImage(:,:,3) == 0);
blueMask = (rgbImage(:,:,1) == 0) & (rgbImage(:,:,2) == 0) & (rgbImage(:,:,3) == 255);
yellowMask = imdilate(yellowMask, true(3));
% Extract only blobs where yellow was touching the blue.
mask = imreconstruct(yellowMask, blueMask);
% Mask the image using bsxfun() function to multiply the mask by each channel individually. Works for gray scale as well as RGB Color images.
maskedRgbImage = bsxfun(@times, rgbImage, cast(mask, 'like', rgbImage));

类别

Help CenterFile Exchange 中查找有关 Geometric Transformation and Image Registration 的更多信息

产品


版本

R2021b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by