Quantification

I was pondering adding some auto line based A8 conversion to my app using the already written colour remapping when I saw Quantizator over on AtariAge forum so I thought there was no point, then last night I got bored of working on what I was doing so thought I'd just drop it in anyway. Turned out to be pretty easy to get the basics going, an hour of coding (plus some time for a blatant bug that took me ages to catch) and I'd got a 4 colour per line remapper.

It's not amazing so far and doesn't quite produce results that are as good as quantizator. I'm presuming that uses a method to find top used colours that are different hues whereas mine is a simple "most used" formula atm. I've also got no dithering to help spread colour matching errors.

Here's an example with a fairly simple C64 image.

Original


Converted


I think I'll continue messing with it as it's taken less time than I thought and add better colour choosing, F-S dithering/error spreading, PMGs for extra colour, maybe and/or mid-scanline colour changing.


Pete