display mean and max of images....

Question

Elysi Cochin 2014-3-18

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https://ww2.mathworks.cn/matlabcentral/answers/122041-display-mean-and-max-of-images

评论： Image Analyst 2014-3-19

I rotate an image at a particular angle and then find its mean and max value. How do I display the mean and max image as shown in the 2nd and 3rd columns of the link below?

http://tinypic.com/view.php?pic=2d0f66v&s=8#.Uygphc6CxDA

 The column 1 - is the rotated image at an angle,
     column 2 - mean 
     column 3 - maximum

Please, can someone help me how to display the mean and max images as in the 2nd and 3rd column of the link?

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Answer 1

Nitin 2014-3-18

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https://ww2.mathworks.cn/matlabcentral/answers/122041-display-mean-and-max-of-images#answer_128911

mean_img = mean(Img(:));

max_img = max(Img(:));

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Nitin 2014-3-19

You might need to reassign the columns with the mean and max values you have computed

Elysi Cochin 2014-3-19

how to reassign.... please do reply sir....

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Answer 2

Image Analyst 2014-3-19

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https://ww2.mathworks.cn/matlabcentral/answers/122041-display-mean-and-max-of-images#answer_129093

It looks like this came from a paper. Didn't they describe how to get the images in the second and third columns? Is the second image the mean of the image as if you had rotated at a certain number of angles? Like 0 - 90 or something? Can you just use cart2pol(), then get the mean or max along columns, then invert with pol2cart()?