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Post #253026

Author
Desree
Parent topic
Info: Auto-correction from SE colours to GOUT colours (lots of information)
Link to post in topic
https://originaltrilogy.com/post/id/253026/action/topic#253026
Date created
23-Oct-2006, 6:10 PM
Okay, here goes. Superrune, you wanted to see the source, so here are the same main three shots in Pan And Scan (though i wasn`t able to do an exact match on the Yoda shot, `cause i can`t remember which frame i used). These are taken from the raw capture (sorry, i deleted the Huffy render used for the histogram as i needed the hard drive space and want to still use the raw capture for a `definitive` render), before remove dust was invoked but after level correction. Noise for the histogram was removed with Removedust(6). That would be the only step left.

Rogue2 Fullscreen
Yoda Fullscreen
Fleet Fullscreen

Laserman, yes i am using the latest version. But I think i can scrap that line about the wasted histogram rendering. I`d forgotten something very important regarding YV12. I am using these in my script, before the RGB conversion (i forget things and get confused easily, as i am a heavy smoker, for those that know what i mean). A Polar and regular YV12 histogram is generated off the GOUT and SE, to make sure that the YUV levels match, and then the rgb histogram from the SE and the Pan And Scan used to correct colour. In fact, this is what it looks like without the YUV correction:

Rogue2NoYV12

Not bad, but doesn`t give that nice crisp white provided with the YV12 Histo`s, and both histograms are needed otherwise the endresult isn`t affected. And for PaulisDead2221, here is the section of my script that deals with the colour correction:

polarcolourlike("D:\Empire\ESBdvdSMART\Histogram\SeDVDallPolar.txt","D:\Empire\ESBdvdSMART\Histogram\OrigDVDallPolar.txt",true,true,true)
colourlike("D:\Empire\ESBdvdSMART\Histogram\SeDVDallYV12.txt","D:\Empire\ESBdvdSMART\Histogram\OrigDVDallYV12.txt")
converttorgb32(matrix="pc.709")
colourlike("D:\Empire\ESBdvdSMART\Histogram\SeDVDallRGB.txt","D:\Empire\ESBdvdSMART\Histogram\FullLaserallRGB.txt")
levels(36,1,214,0,255)
VD_HUE(sat=0.9)

But the page that moth3r linked to really does have all the info (be aware that the last version released is on page 2 of the discussion).
Should anyone wish to use them, here is a link to all the histograms used in the above sample:

Histograms

And for those that wish to know, my project isn`t yet finished, although Empire is rapidly entering the "Alpha" phase, in fact should be done by the end of the week, and Star Wars shouldn`t be too far behind (been de-se`d, but not colour corrected). When this is done, i will start a new topic where i hope to link to the script, histograms and plugins used and provide instructions as a `do it yourself` kit for owners of the original dvd`s. The "Alpha" release will simply use a remastered GOUT to replace SE footage, but i am simultaneously recreating missing frames at a higher quality, pulling together every source i own, but so far only have Vader And the Emperor and a tiny segment of Leia in the Clouds (about 25 frames of the pod car which was replaced by the Weather Vain), completed. But it is tedious and boring work. So the final version will be a while in coming. I do not wish to derail the thread, so this is the one and only time that i will hijack it to discuss my own project in detail.
Oh, and one last thing before i finish this post, the frame that inspired the thinking behind the idea of using the YV12 histogram before the RGB ones, the purple asteroid:

That Damned Asteroid