Color matching and prediction: color correction tool v1.3 released! — Page 29

Actually, something similar is done in the film print correction algorithm. Essentially the algorithm scans all available colors in a frame or set of frames to determine if there is a color cast.

I’m working on a beta version of the ColorCorrect tool, that will be the blueprint for v3.0. It will contain the algorithms for unsupervised color restoration. Williarob and poita will be testing it first, so it may take a little while before the release version is ready.

Sounds good DrDre. Can’t wait.

The color correction tool v2.2 has been dubbed the color matching tool v1.0 to distinguish it from the upcoming color balancing tool v1.0. The functionality of the color matching tool v1.0 is the same as the color correction tool v2.2.

DrDre said:

The color correction tool v2.2 has been dubbed the color matching tool v1.0 to distinguish it from the upcoming color balancing tool v1.0. The functionality of the color matching tool v1.0 is the same as the color correction tool v2.2.

The white zone is for immediate loading and unloading of passengers only. There is no stopping in the red zone.

nightstalkerpoet said:

Hey DrDre

Since you appear to be our resident “build algorithms from scratch” guy, I have a request.

Multiple projects on this site use some form of an average of multiple captures or sources.

I’ve seen a few different ways people are doing this, but they appear to be limited to mean and median averages. IMO, a mode average would be the preferred method of averaging in this specific instance, but I’ve never found a plugin or tool that implements mode. Avisynth would be the preferred platform, but perhaps it’s something you could implement in a matlab environment?

Is this something you could/would be willing to look into?

Not sure if I will have the time available, but I will dwell on it for a little while…

An updated version of the color matching tool is almost ready. It includes an updated version of the algorithm, that produces results in a matter of seconds even for a 4K image.

Thanks DrDre for all your hard work on this, it is a great tool for sure!

The color matching tool v1.1 has been released. The algorithm has been upgraded, such that creating a color matching model only takes a few seconds, even for a set of 4K frames. Please send me a PM, if you’re interested.

Perfect timing!

Thanks. Do you plan to release also the “prediction” tool too ?

I’m having a problem with the box that pops up saying: Building color matching model, please wait….
Unlike previous versions of the tool, only part of the white bar goes red; after that, it stops and remains in place, even when the model has obviously been constructed and can be used to color-match images.

For me, the tool also seems slower than previous versions, even after selecting Fast processing mode. I’m using the default settings. Is anyone else experiencing this?

EDIT: Well, increasing the number of color spaces to maximum seems to increased the speed, which is the opposite of what I’d expect. The box that pops up has disappeared too. Strange!

Well, I have it. I don’t know how to use it, but I have it.

I will have a look later today, to see what the problem is.

pittrek said:

Thanks. Do you plan to release also the “prediction” tool too ?

Yes, Poita and Williarob are testing the tool. Once I have their feedback, I will create a release version of the tool.

Chewtobacca said:

I’m having a problem with the box that pops up saying: Building color matching model, please wait….
Unlike previous versions of the tool, only part of the white bar goes red; after that, it stops and remains in place, even when the model has obviously been constructed and can be used to color-match images.

For me, the tool also seems slower than previous versions, even after selecting Fast processing mode. I’m using the default settings. Is anyone else experiencing this?

EDIT: Well, increasing the number of color spaces to maximum seems to increased the speed, which is the opposite of what I’d expect. The box that pops up has disappeared too. Strange!

Perhaps you should try reinstalling the tool, after you’ve removed earlier versions. I’ve tested the stand alone version, and it works just fine on my laptop. Building a color matching model using the default settings (10 color spaces, fast processing mode) for a 1080p test and reference frame takes 18 seconds. The same process takes 2 minutes and 20 seconds on the previous version of the tool.

Thanks for checking, but I’ve tried uninstalling all previous versions and MATLAB and then reinstalling, but that pop-up box still won’t go away. I’ll keep trying.

EDIT: Once again, the tool seems to function as it should when I increase the number of color spaces to maximum.

Chewtobacca said:

Thanks for checking, but I’ve tried uninstalling all previous versions and MATLAB and then reinstalling, but that pop-up box still won’t go away. I’ll keep trying.

EDIT: Once again, the tool seems to function as it should when I increase the number of color spaces to maximum.

Could you send me two of the frames (test and ref), that you were having problems with?

As it happens, I have done. See my recent PM. 😄

But I’m convinced that something is wrong on my end…

Chewtobacca said:

As it happens, I have done. See my recent PM. 😄

But I’m convinced that something is wrong on my end…

You have a PM as well 😉. I experienced no problems using the frames you sent me.