How can I show a "found" pixel in an image?

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sara 2015-4-11

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评论： Image Analyst 2015-4-12

Hi. I use find command for different things, like for finding max,(max(I(:))), like for finding specific corners, etc. How can I show the found pixel in image? It gives me numbers. How can I show it in image with a red dot, a marker, over the image?

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采纳的回答

Image Analyst 2015-4-11

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imshow() shows all the pixels in the entire image, including the one you want. If you want a red cross in the overlay above your image, do this

imshow(rgbImage);
hold on;
plot(x, y, 'r+', 'LineWidth', 2, 'MarkerSize', 30);  % Put up red cross.
% If you want a blue circle instead, try this:
plot(x, y, 'bo', 'LineWidth', 2, 'MarkerSize', 30);  % Put up blue circle.
% If you want a yellow square instead, try this:
plot(x, y, 'ys', 'LineWidth', 2, 'MarkerSize', 30);  % Put up blue circle.