How can I show a "found" pixel in an image?
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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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Image Analyst
2015-4-11
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.
If your data is in terms of row, column rather than x,y, then make sure you do plot(column, row, 'r+'), and NOT plot(row, column, 'r+')
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Image Analyst
2015-4-12
You're welcome. If we're done here, can you mark the Answer as "Accepted"? Thanks in advance.
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