Load the same jpg image with OpenCV3.0 and matlab but get different results

Asked Sep 18 '16 at 13:50

Active Sep 18 '16 at 13:50

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Recently, I'm translating some pieces of codes from Matlab to C++. And I load the images(JPG) using imread() in OpenCV3 in my codes, but I never got the same result as MATLAB codes.After checking my codes several times, I'm suprised to find that the original data of image always have little diference from each other.

Just like this:

channals: R G B
OpenCV: 150 124 200
MATLAB: 148 125 203

Then I use GDAL to read the same image and got the same result as MATLAB. So I want to known if there are always some errors when read JPG images using OpenCV3.

Thank you very much!

asked Sep 18 '16 at 13:50

Kapok

Maybe different handling mechanism in color profile. But just guessing, I have no idea, neither. – Jeon Sep 18 '16 at 14:04
thanks anyway for your help! – Kapok Sep 18 '16 at 15:07
Are you aware that opencv's imread stores images in BGR order? Other than that, no clue. – S. Wenzel Sep 18 '16 at 15:11
yes,of course!The fact is that every channal has the same problem. – Kapok Sep 18 '16 at 15:14
1

That's because they use different libraries to decode jpeg. There are a few dupes also... I'll look for them – Miki Sep 18 '16 at 15:36

Load the same jpg image with OpenCV3.0 and matlab but get different results

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