Erasing Blue Pencil Sketch Lines from an Inked Scan

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Use the Black and White adjustment layer to eliminate col-erase non-photo blue pencil sketch lines from a scan of inked artwork. (or many other pencil colors - experiment with hues other than blue - this approach is more versatile than those methods involving eliminating or copying a single color channel)

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Adjust one or more sliders, use mainly the cyan slider in the case of Col-Erase non-photo blue, until you target the precise hue of pencil you need to eliminate. The process occurs interactively as you adjust the slider.