how to save all pixel co-ordinate locations as a vector ??
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Whether it is possible to save the pixel locations of an image in a vector ? which comment to save the pixel locations ..could any one help me out ...
2 个评论
Image Analyst
2014-6-23
Locations means (row, columns) or (y, x). If you want both of those separately you'll need an array or two vectors. If you want one you'll have to use linear indexing as Dishant showed you.
Abhishek sadasivan
2014-6-23
回答（2 个）
Dishant Arora
2014-6-23
% Use Linear Indexing/Vector Indexing
ind = 1:M*N; % For an image of dimension MxN
Image Analyst
2014-6-23
[rows, columns, numberOfColorChannels] = size(yourImage);
[X, Y] = meshgrid(1:columns, 1:rows);
xy = [X(:), Y(:)];
I really highly doubt you'd ever need this. Explain to me why you think you need this and I'll explain why you probably don't.
2 个评论
Abhishek sadasivan
2014-6-23
Image Analyst
2014-6-23
Yeah, like I thought, you don't want what you asked for. Even if you did you'd use
elementsToTake = randperm(numel(grayImage), 0.15*numel(grayImage));
But that's going to take random pixels, not random rays from your ultrasound image.
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2014-6-23
2014-6-23
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