Hi all, I've been looking around for a premade algorithm to pixelate an image or something similar that I could expand on although I've only been able to find descriptions of the algorithm so I've attempted to make it. What it does is loops through every pixel in a BufferedImage, loaded from a 16-bit PNG image file (byte for each component) and it divides the current X and Y components by the square size . From here it performs a further nested for loop to total the pixel colours in the block that this pixel is in.
It then divides by the block size, which is represented by the "pp" field, except it's squared because it samples pixels in a square along the X and Y axes. According to a few explanations I've read this should give me the average pixel colour for this block and every pixel in this block should be coloured in it. The algorithm I've written works somewhat in that the general shape of the image is preserved after the pixelation with far less detail, as is expected. The problem is that the colours are completely wrong and I'll show you how in the image below:http://i.imgur.com/Ezfp4W8.png
Here there's just a picture of a hamster I found. The algorithm magnifies the area by a sort of scale factor.
Also here's the algorithm:http://www.java-gaming.org/?action=pastebin&id=544
Can anyone spot why the colours aren't averaging out right?