Drawing rectangles around objects and find intersection points

Question

Jack Smith 2015-3-26

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/194608-drawing-rectangles-around-objects-and-find-intersection-points

回答： Image Analyst 2015-3-26

Hi, I have two images as attached below, one contains only logic gates and the other contains only the lines connecting to them. I would like to draw a red rectangle around the each logic gate of the first image (as like shown for AND gate in the image) , then combine (overlap) the first image to the second image using a function like imadd() . Then I would like to find the intersection point coordinates formed between rectangles drawn in first image & the lines of second image.

Someone please provide code for that.

First Image

Second Image

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Answer 1

Image Analyst 2015-3-26

1
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/194608-drawing-rectangles-around-objects-and-find-intersection-points#answer_172901

Assuming that the lines do not overlap any of the gates, then call imdilate() to stretch the lines horizontally a pixel, the xor the images with xor(). That will tell you where the lines touch the gates. Pass that image into find() if you want actual row and column locations.