XnView Software

Posted: **Tue Feb 02, 2021 4:30 pm**

nconvert.exe -help wrote:
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-compare filename method : Compare with this image, method (red, red_only)

Posted: **Wed Feb 03, 2021 7:09 am**

output pixels difference between 2 images (need to be same size)

Posted: **Wed Feb 03, 2021 10:30 am**

xnview wrote: Wed Feb 03, 2021 7:09 amoutput pixels difference between 2 images (need to be same size)

I was hoping for something like this to be implemented, but I can't get it to work.

How do I tell nConvert to compare (the blue channels of) two images (original.png + edited.png)?

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nconvert.exe -compare edited.png original.png

Could you please give me an example illustrating the purpose of the method argument and what values (red/green/bue? red_only/green_only/blue_only/alpha_only?) are accepted as parameters?

Posted: **Wed Feb 03, 2021 10:39 am**

you can try

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nconvert.exe -compare edited.png red original.png

only red/red_only as parameters

Posted: **Wed Feb 03, 2021 4:30 pm**

xnview wrote: Wed Feb 03, 2021 10:39 amyou can try
Code: Select all
nconvert.exe -compare edited.png red original.png
only red/red_only as parameters

Thanks, Pierre!

: www.cambridgeincolour.com/tutorials/bit-depth.htm; test.png (72.62 KiB) Viewed 3013 times

: nconvert.exe -out jpeg -q 100 -opthuff -dct 2 -smoothingf 0 -subsampling 2 -o test.jpg test.png; test.jpg (94.87 KiB) Viewed 3013 times

: nconvert.exe -compare test.jpg red test.png; nconvert_red.png (91.46 KiB) Viewed 3013 times

: nconvert.exe -compare test.jpg red_only test.png; nconvert_redonly.png (41.61 KiB) Viewed 3013 times

: www.softpedia.com/get/Multimedia/Graphic/Graphic-Others/ImageDiff.shtml; imagediff.png (18.93 KiB) Viewed 3013 times

XnView Software

What does the "-compare" option do?

What does the "-compare" option do?

Re: What does the "-compare" option do?

Re: What does the "-compare" option do?

Re: What does the "-compare" option do?

Re: What does the "-compare" option do?