manually draw shapes (like using a pencil to draw on figure) on opened image

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Quan 2015-1-14

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https://ww2.mathworks.cn/matlabcentral/answers/169887-manually-draw-shapes-like-using-a-pencil-to-draw-on-figure-on-opened-image

评论： Quan 2015-1-14

采纳的回答： Shoaibur Rahman

Hi! I want to manually draw lines/curves/shapes on an opened image figure, just like using the pencil tool in the paint program of windows, and let the program record the pixels that I have drawn into a variable. Is there an existing function to do this? Thanks in advance.

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Shoaibur Rahman 2015-1-14

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https://ww2.mathworks.cn/matlabcentral/answers/169887-manually-draw-shapes-like-using-a-pencil-to-draw-on-figure-on-opened-image#answer_164828

在 MATLAB Online 中打开

Try:

roipoly

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Quan 2015-1-14

Thanks! very helpful function.

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