Does anyone know a tool which does a pixel exact comparison on a 1:1 or 1:X basis and then tells you if the pictures match or not?
Image comparison tool
Miscellaneous Forums/General Discussion/Image comparison tool Match?
In size? In aspect ratio? In the image itself?
In size? In aspect ratio? In the image itself?
I suppose he wants the image itself. I think PS CS3 can do this job.
The images itself were all pixels are comparedwith each other.
pixel 1 of image 1 = pixel 1 of image 2(or x)?
pixel 2 of image 1 = pixel 2 of image 2(or x)?
:
pixel 1 of image 1 = pixel 1 of image 2(or x)?
pixel 2 of image 1 = pixel 2 of image 2(or x)?
:
Put each image in a separate layer in an image editing program (Paint.Net, for example) and set the top layer to "difference" blending mode?
you could code a program in blitz to do this very quickly
bearing in mind the display might not give the true rgb values etc
i guess you could code something with little effort and read the uncompressed image in vram if you are looking for stenography (sp) (if ive got the right one that is)
or compare jpg png compression etc
if it was a bmp you could just check the file without having to display it
i guess you could code something with little effort and read the uncompressed image in vram if you are looking for stenography (sp) (if ive got the right one that is)
or compare jpg png compression etc
if it was a bmp you could just check the file without having to display it
I would have prefered if there already exists a working solution due to different file formats, it's not that i'm just having PNGs. :O/
TortoiseSVN comes with a tool called TortoiseIDiff which compares images, but if might not be as detailed as you need.
What does it compare then? More for feeding image databases?
http://www.google.com/search?hl=en&q=image+comparison&aq=1&oq=image+compa
Well, such software seems to exist for a while, never tried yet tho...
Well, such software seems to exist for a while, never tried yet tho...
on a 1:1 basis you can see if a file itself is identical straight through the windows command line:
fc <file1> <file2> /b
Of course that doesn't account for 'identical' files saved in different formats. If you do a pixel-by-pixel comparision of an image file, also keep in mind that different formats may introduce differences, e.g. if you have a .PNG and save it as a .JPEG, you'll introduce differences thanks to the lossy compression algorithms uses that subtly change the data and thereby certain pixels in the process.
fc <file1> <file2> /b
Of course that doesn't account for 'identical' files saved in different formats. If you do a pixel-by-pixel comparision of an image file, also keep in mind that different formats may introduce differences, e.g. if you have a .PNG and save it as a .JPEG, you'll introduce differences thanks to the lossy compression algorithms uses that subtly change the data and thereby certain pixels in the process.
@yoko
Oops, i already tried google but it seemed i did something wrong.
@xlsior
Only losless compressed files will be comapred.
Oops, i already tried google but it seemed i did something wrong.
@xlsior
Only losless compressed files will be comapred.