Cleaning Up Scanned Line Art in Adobe Photoshop

This note was updated on 26 May, 2024 at 09:28.

  1. Use adjustment layers to begin cleaning up your line art:
    • Remove any non-repro blue underdrawings with a Hue/Saturation adjustment layer. After choosing the Cyans colour range in the Properties panel, set the saturation to minimum and lightness to maximum.
    • Use Curves and/or Levels adjustment layers to improve the line quality and whites, and remove any remaining underdrawings.
    • For inked line art, use a Threshold adjustment layer to convert the line art to black-and-white bitmap.
  2. At the bottom of the Channels palette, click on Load channel as selection to create a selection of the white areas of the image.
  3. Invert the selection.
  4. Create a fill layer; the selection will be applied to the fill layer’s mask. Alternatively, use the Paint Bucket tool to fill the selection on a new layer.
  5. Deselect the selection.
  6. Delete or hide the scanned artwork and adjustment layers.