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Discussion Groups | Image Signal Processing | Image Comparison Algorithm
Technical Discussions related to Image Processing (image coding, compression, digital effects, mpeg, etc)
Image Comparison Algorithm - ppla...@yahoo.com - Nov 18 9:07:00 2005
I am looking for an image comparison algorithm. I need to compare two RGB images (24 bits per pixel) considering a mismatch percent. If the first image is lighter than the secound one them they has to be consider as equal images.
Can anyone help me?
pablin
pplantero@ppla...
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Re: Image Comparison Algorithm - Ranjith Parakkal - Nov 24 14:32:00 2005
Try this. Convert to freq domain. Throw away DC.
Compare only AC coefs.
Or remove mean from both the images. If required,
normalise using standard deviation of the 2 images.
And compare in pixel domain.
Regards
Ranjith
--- pplantero@ppla... wrote:
> I am looking for an image comparison algorithm. I
> need to compare two RGB images (24 bits per pixel)
> considering a mismatch percent. If the first image
> is lighter than the secound one them they has to be
> consider as equal images.
>
> Can anyone help me?
>
> pablin
> pplantero@ppla...
(You need to be a member of imagedsp -- send a blank email to imagedsp-subscribe@yahoogroups.com )
Compare only AC coefs.
Or remove mean from both the images. If required,
normalise using standard deviation of the 2 images.
And compare in pixel domain.
Regards
Ranjith
--- pplantero@ppla... wrote:
> I am looking for an image comparison algorithm. I
> need to compare two RGB images (24 bits per pixel)
> considering a mismatch percent. If the first image
> is lighter than the secound one them they has to be
> consider as equal images.
>
> Can anyone help me?
>
> pablin
> pplantero@ppla...
(You need to be a member of imagedsp -- send a blank email to imagedsp-subscribe@yahoogroups.com )