Making White Backgrounds Whiter for Line Art and Drawings

When scanning or photographing artwork, you need to do some tweaking before you print.

Often, when scanning in drawings or line art, you’ll be left with a slightly off white colour from the paper.

When re-printing, the paper background will often leave unsightly shadows and marks on the print that are easily corrected.

All instructions in this article will be using Adobe Photoshop CS6, but any image editing software should be able to do these simple edits.

Contents

Starting Image

Starting Image

We’ll start with this image, obtained from the British Library collection of public domain scans. It’s a fairly simple image, but it could do with a little cleaning up before printing.

Cleaning Up

Start by using the Patch tool Patch Tool to get rid of any marks or parts of the image you no longer want. I use the following settings:

Patch Tool Settings

Cleaned Up Image

Don’t worry too much about cleaning it up too much, as the next steps will help to get rid of a lot of the blemishes.

Decrease Saturation

For black and white drawings, a sensible next step is to get rid of any colour in the image.

To do this, go to Image > Adjustments > Hue/Saturation and drag the Saturation slider all the way to 0, and hit OK. You should end up with something like this:

Desaturated Image

Lighten and Darken

The next thing we want to do is make the paper white, and the ink black.

To do this, we’ll use the ‘Levels’ adjustment tool. Go to Image > Adjustments > Levels, and drag the right slider just past the first big peak on the right, and the left slider just past the other first big peak on the left.

Levels Adjustment

And you should end up with something like this:

Final Image

Colour Drawings and Paintings

The same principle can be applied to colour images, you just have to miss out the desaturation step:

Colour Starting Image Colour Cleaning Step Colour Final Image

Harry Mustoe-Playfair Wednesday, 13 December 2017 09:18:00 Europe/London

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