How to display output image from 'Regionprops'?

Question

Fahmi Akmal Dzulkifli 2022-7-30

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1770995-how-to-display-output-image-from-regionprops

评论： Fahmi Akmal Dzulkifli 2022-7-30

Greetings, I have a code like shown as below:

img = imread('I.jpg'); % this image in grayscale
c = 1;
BW = img > 0;
BW = bwareaopen(BW,50);
s = regionprops(BW,img,{'Centroid','MeanIntensity','PixelValues'});
numObj = numel(s);
for k = 1:numObj
    s(k).Gamma = round((2.6593.*(s(k).MeanIntensity)+0.3137),1);
    s(k).Output = c*(s(k).PixelValues.^s(k).Gamma);
end

I want to ask is there any possible way to display the new image obtained from the s(k).Output?

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Walter Roberson 2022-7-30

Yes, there is a possible way. But that doesn't mean that it is a good idea to proceed this way.

Ask for the Bounding Box and the Image. Use the bounding box to extract original pixels from img. Multiply by cast(Image, class(img)) to get masked pixels. Apply gamma transform to them, making sure to take into consideration whether the pixels are double precision or uint8. You know have a gamma transformed sub-image that you can display

Fahmi Akmal Dzulkifli 2022-7-30