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Pseudocolour

Pseudocolour

Once the PC images are produced, the scientists examine the images to identify those that show different inks and insert these images into the red, green, and blue channels (RGB) of a "pseudocolour" (false colour) image. If the handwritten ink appears as "light" in one of the PC images and "dark" in another, then the corresponding pixels may exhibit a colour tone in the pseudocolour image that allows easier differentiation between the handwritten and printed texts. Page shown DLC297b, held at the David Livingstone Centre, Blantyre, Scotland.