How do you compare pictures?

[DvdKhl]

Since I'm using Corel Photopaint and VDub to compare pictures
to see the differnce between for example two denoisers,
I wonder if there are better programs for it
which can "substract" the color information
or something like that to see the difference easier.

[SoonUDie]

If you have a program that can overlay one image on top of the other and let you switch, you should be fine.

*DO NOT* trust "subtracted" images. They may show you where the differences are, but in general they tell you nothing about actual visual quality. Let your eyes decide.

[starwarsandrisk]

use avisynth.... try sommin like this

video1=whatevervideo
video2=video1.whateverdenoiser
stackhorizontal(video1, video2)

you can add as many videos as you want....

[Soulhunter]

If you have WinXP, you could use its in-build slide-show function, to skip quickly between two pictures... ;)


Bye

[Neo Neko]

The Gimp is often ignored for no good reason.

[Soulhunter]

Yeah, Gimp is very nice... But the slide-show thingy is already in-build !!!


Bye

[GIR]

I use Paint Shop Pro (8), just paste one image as a layer on top of the other one, then use the opacity slider, or the visibility toggle to compare.

[Didée]

script: interleave( not_filtered, filtered )

user: LeftArrow -- RightArrow


- Didée

[scharfis_brain]

Didée, can read my thoughts?

Me either using didée's method

or

stackhorizontal(video1,video2)
bilinearresize(1008,height) #1008 for 1024px desktop res, or 1144 for 1152px desktop res

for comparing images, I am using IrfanView.
I hate the Windoze Built-In Slideshow.

[DvdKhl]

Originally posted by Didée
script: interleave( not_filtered, filtered )

user: LeftArrow -- RightArrow


- Didée

I like that method, now I don't have to copy the frames to another app anymore. :D

THX