A Practical Guide to Video and Audio Compression

35

Color Correction

35.1 Light and Shade

Now that the preprocessing has sorted out the temporal and spatial adjustments, we can turn our attention to the overall lighting and coloring of the image. It is helpful to separate adjustments to the brightness from those that modify the color, so first you’ll need to get the luma values right. Then the color can be tweaked if necessary. The luma may need to be checked again and very slight adjustments made after color correction is taken care of.

35.2 Correction Is Sometimes Mandatory

Sometimes the footage you are processing requires some color correction simply because of the kind of material involved.

Old home-movie film is almost certain to have a purplish cast to it because some of the dyes in the ...