Purpose: 

Apply different upscaling algorithms to pixel art and compare their quality.
I implemented the non anti-aliasing algorithms mentioned in the wikipedia article: http://en.wikipedia.org/wiki/Pixel_art_scaling_algorithms
My custom versions aim to solve some artifact-problems and are marked with the suffix HQ.

Usage:

1. Drag a PixelArt image into the program. 
2. Chose a Sampling-Type by clicking on it. 

Adjust the size of the image to your screen with the Zoom slider.
Hold SPACE to compare the current Sampling-Type with the previous one.
Toggle Fullscreen by pressing the F-key.

Questions:

lithander@gmx.de