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How to apply a rectangular on images?

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Faranak
Faranak el 10 de En. de 2015
Cerrada: MATLAB Answer Bot el 20 de Ag. de 2021
I want to apply a rectangular on an image. First I want to click on the image and give the program a point and then apply the rectangular on the image, the point will be the center of the rectangular. after that I want to have the pixel value of the selected area. what should I do?
I found this in other questions: h=imrect(gca,[10 10 100 100]) it will apply rectangular h on the image, how can I give the point by just clicking on the image by myself since I do not know the start point for rectangular, this rectangular will start from point (10 10), I want the point which I select be the center of the rectangular not the starting point. and after that I want to work on the pixel value of pixels inside the rectangular. what should I do?

Respuestas (1)

Image Analyst
Image Analyst el 10 de En. de 2015
Why not just call imcrop()?
  4 comentarios
Faranak
Faranak el 10 de En. de 2015
I mean I don't want to crop the image, cause I think it will take time for the program,because I have more than 1000 pictures. imcrop will exactly do what I want. But I guess by cropping it will take time, I just want the rectangular act as a window and give me roi of the rectangular. by applying the rectangular I want to introduce a new roi and have pixel intensity of that area.
Image Analyst
Image Analyst el 11 de En. de 2015
You either crop it, and work on the sub image, or you don't and need to take care to never have indexes outside row1, row2, col1, and col2. Either way, I don't care.

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