Remove lines from scans of Lined-paper?

[Namo]

Google was useless for this one.

Is there any way to remove the blue lines from scanned drawings that were drawn on notebook paper? I can't seem to figure this one out at all.

[SAND33P]

Emm, some scanners have an option to remove them, but i reckon ur best bet is to try with the magic wand on the outisde of the drawings and/ or use the color change tool to make em white.

Edited February 25, 2011 by SAND33P

[Djisves]

Use the Colour Picker tool to select the blue lines colour, invert primary and secondary colours, and using the same tool select the paper backgroung colour.

Your colour pallete window should now show the paper colour as primary and the line colour as secondary.

Use the Recolouring (Colour Replace) tool to paint the background colour over the lines.

Edited February 25, 2011 by Djisves

[BoltBait]

You could try the Conditional Hue/Saturation plugin.

[yellowman]

There are some different techniques, it depends on the followings conditions:

-The drawing is in b/w or colored (not the lines)

-How clean/sharp the scanned image is

-How accurate the alignment is, for the scanned image.

In addition to the all above, a sample of the image (or a small part, if it is not possible to post the whole image) will be very helpful to find out the better way of doing that.