DrDre

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?

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.

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.

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

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.

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.

It looks amazing NeverarGreat!

Here’s the color balanced version of that still. You can clearly see the Death Star walls have a blue bias, as Mike Verta maintains should be the case:

http://screenshotcomparison.com/comparison/175168

Thanks y’all!

Here’s the shot of Luke regraded, based on the 1997 telecine (bluray top, regrade bottom):

fmalover said:

I don’t like the 1997 telecine grading, too blue.

The 1997 telecine samples have not been corrected yet. The blue tone is removed in the second pass, like for the last examples.

Here’s the first duo of regrades, based on the 1997 telecine (top bluray, bottom regrade):

Here’s an example of how one of the above frames of the 1997 telecine would look after a second pass correction.

Before:

After:

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…

g-force said:

DrDre said:

yotsuya said:

DrDre - you sir are a master. That is it. Perfection.

Thanks, I like them a lot also!

Good idea for another source to use! but… Some look a bit blue, some too bright, some with a lack of contrast. Not loving them I gotta say.

Do the same for the JSC, and the LPP, and the IB, and this one, throw out the outliers, average the results, and then you may have something.

-G

There’s still some color variation, because I applied a single correction to the entire sequence. The variation is part of the source sadly. A bluray matched to this source definitely would require a second pass to unify the colors, but many print scans are really no different. However, I think there’s something lurking in there…

yotsuya said:

DrDre - you sir are a master. That is it. Perfection.

Thanks, I like them a lot also!

Dreamaster said:

DrDre said:

I’ve been experimenting a bit with color balancing the telecines of the 1997 SE, to see what colors come out of this process. Here are some results:

/tons of screenshots with ultra natural skin tones

SOLD. Can those shots be used to correct the blu ray to those colors then?

That’s the plan… 😃

I’ve been experimenting a bit with color balancing the telecines of the 1997 SE, to see what colors come out of this process. Here are some results:

Deleted

Dat_SW_Guy said:

I was wondering if a copy of the JSC laserdisc is around usenet or spleen. Is it even digitally available?

Yes, Althor1138 made an excellent transfer of the trilogy, and it can be found on myspleen as a single bluray.

Rather than posting a bunch of random frames, like before, I will start with the Luke meets Obi-Wan scene, do the regrade for the entire scene, and present the results for all of you to critique. 😃

Now that poita and williarob are testing the color restoration tool, it is time to start working on the bluray regrade again. Updates will follow soon…

Darth Lucas said:

Wish I had more to contribute, but I’m afraid most of my comments here are just similar “you’re an amazing wizard, DrDre” comments. Keep it up 😃

Thanks! 😃

Poita and Williarob both have a beta version of the color restoration tool I’ve developed. Hopefully they’ll be able to put it to good use. Here’s an example of what the tool can do to aid the process of restoring the colors of the red faded TESB print scan, that poita will be using for his restoration:

canofhumdingers said:

That final correction of the emperor shot above is obviously a marked improvement over the untouched or the “non blue” versions, but it still feels a bit too pinkish.

This is why I said, you should in practise use a frame for calibration, that’s closer to the frame you want to correct. 😉 This was only an example to show the process, not an example of a final correction.