Was the lost scene from GOLD DIGGERS OF BROADWAY suposed to be in 2 color technicolor ????
Computer colorization it's better today than in the 80's and 90's, and there are some beautiful works, but still not perfect, since it is basically a puzzle (lot of pieces). They segment the image for each object and pice, like face, lips, a jacket, a jar, and place a color spectrum over it (without afect the original gray levels).
The color depends on the gray scale to guide the color variances. For example, a apple be turns more red in the medium tones and a bit more yellowed in the brighter tones.
It's a 2D process, since perspective and texture mapping are often ignored.
But today with evolution 3D extimation algorithm being used for 3D conversion of 2D films, it's possible that 3D estimation and texture tracking could be adaptesd to make colorization closer to perfection.
Even though, you would need the B&W that was copied from the color footage, and in general the B&W sequences was not the same take of the correspondent color sequence.
For example, in The Phantom of the Opera the technicolor scenes was made for a limited runing, in sellected theaters, due the high cost of produce prints in such color system. So they shoot the same script scenes ,that would have technicolor, also in B&W. They would not just copy the color to B&W, as it was not sharp and also dark after duplication.
Phantom of Opera have the Masked Ball sequence in technicolor, it was found many year ago. But a small portion of the masked ball scene (the few last scenes) survived only in a B&W print (not same shot from technicolor since was shot in B&W for B*W distribution), and was colorized in the late 90's to a Photoplay restoration.
It was easy to noticed what was the original technicolor and what was the colorized footage.
Colorization also dpeends a lot of have a print or master with good dynamic range. The recent colorized foostage of WWI (made for History Channel) look quite poor, since most footage was very contrasting.
AND THERE IS NO WAY TO GUESS, DISCOVER, WHAT COLOR EACH THING WAS, UNLESS YOU FIND THE ENTIRE SETS AND THE FIGURINE SOMEWHERE, or references like color pictures.
Donald Binks wrote:It's marvelous this previously lost footage has been found. With the new process of being able to make black and white pictures into colour - could it be feasible to utilise the found footage as the basis to reproduce the missing colour sequences?
Keep thinking...