How to display output image from 'Regionprops'?

img = imread('coins.webp'); % this image in grayscale
c = 1;
BW = img > 127; % I have changed the threshold value for coins.webp
BW = bwareaopen(BW,50);
s = regionprops(BW,img,{'Centroid','MeanIntensity','PixelValues','PixelIdxList'}); % add PixelIdxList
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.^round(s(k).Gamma)); % gamma is rounded to avoid error
    img(s(k).PixelIdxList) = s(k).Output;
end
imshow(img)