Software by Default

Overview

Lately I’ve developed and published a fair amount of code and technical articles relating to implementing image colour filtering. I’ve decided to start publishing images manipulated by the methods of colour filtering I’ve discussed.

Quite often it is the case that software labelled as open source serve very little practical use, apart from being academic resources. I intend to illustrate through this article and related articles yet to be published that the concepts I examined in my open source sample articles do indeed have a practical application.

The Original Image

The source image featured in this article has been released into the public domain by the  copyright holder. The original image can be downloaded from Wikipedia.

The colour filter implemented in this article was achieved by swapping the original image’s ARGB colour channels. To read up on the technical details involved in Bitmap ARGB colour channel swapping you can read the following article: https://softwarebydefault.com/2013/03/22/bitmap-swap-argb/

The Original Image

Shift Left Filter

Shift Left and Invert Filter

Shift Right Filter

Shift Right and Invert Filter

Swap Blue and Green Filter

Swap Blue and Green Inverted Filter

Swap Blue and Red Filter

Swap Blue and Red Inverted Filter

Swap Red and Green Filter

Swap Red and Green Inverted Filter