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Color Screen is a collection of tools for working with scans of additive screen processes of early color photography.

Additive color screen processes used panchromatic negative which was exposed through a color screen filter pretty much same was as today CCD and CMOS chips use Bayer filter. The negative was then copied to (black and white) transparency which yield to color picture when viewed through the viewing screen filter.

Today some of photographs taken by such processes exist only as negatives while others as positives where the color screen has aged and shited in color. Since black and white negatives and transparencies are very stable, we can reconstruct original colors by aligning the viewing screen digitally.

• TODO: What needs to be done before release
• ColorScreenGUI: Java based GUI
• colorscreen: Library, command line utility and legacy GTK2 based GUI