How to increase line thickness in an existing raster image?


I received an image with colored lines that I need to include in a report. However, the image will be scaled down and the lines will be thin making it hard to see what color they are (especially in print).

This is a sample of the image. It doesn't make sense on its own, but it's just to show what my source image is.
enter image description here

Can I somehow increase the thickness of these lines? Somehow make them bleed to the surrounding area in their original colour? The latter aspect is important so a glow (of one colour) is not going to cut it.

If other software is more suitable to do this, please do share. Photoshop was just my first idea.

11/17/2014 7:30:00 AM

Accepted Answer

Extract the text to its own layer.

Then on the line layer run Filter > Other... > Minimum which will allow you to add pixels to the line while retaining the colors.

(Minimum adds pixels, Maximum subtracts them)

2/28/2014 8:18:00 PM