Comparing Jpeg of images with different size and resolution?
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for a project I need to compare the jpeg size of different images. The problem is that sometimes I have Images that I need to crop (I need only a particular area of the page and not the rest). So basically, I need to crop, resize and also adjust images and compare their jpeg size. Is it feasible to do it with matlab? or would I obtain biased results?
thanks in advance
Pratheek Punchathody on 2 Sep 2020
"size()" function will return number of pixel rows, number of pixel columns and number of colour channels present in the image.
%%Code starts here
%%testimage1.jpg and testimage2.jpg are the sample data
Imx = imread('testimage1.jpg');
Im2 = imread('testimage2.jpg');
Im1 = imcrop(Im1,[75 68 130 112]);
[rowspx1 columnpx1 noColorChannels1] = size(Im1);
[rowspx2 columnpx2 noColorChannels2] = size(Im2);
if rowspx1 * columnpx1 == rowspx2 * columnpx2
disp("Testimages have same number of pixels");
elseif rowspx1 * columnpx1 > rowspx2 * columnpx2
disp("testimage1.jpg has larger number of pixels");
disp("testimage2.jpg has larger number of pixels");
%Code ends here
Please find more information for cropping the image please check this link