pimoroni / hyperpixel

Setup for the Pimoroni Hyper Pixel 800x480 pixel multi-touch display
https://shop.pimoroni.com/products/hyperpixel
MIT License
96 stars 29 forks source link

Mitigating color banding on gradients #53

Closed CatalinMustata closed 1 year ago

CatalinMustata commented 3 years ago

Using a non-touch Hyperpixel 4 (rectangular) on a RPi 4 and for the most part it works fine. However, on color gradients I get some quite annoying banding. I know it's caused by the fact that the Hyperpixel is only 18bit, but I'm curious if there are any known ways to mitigate this.

Not sure if this matters or not, but my issue is with Chromium, displaying a custom web page I created (as a display for Roon).

Lowering the backlight intensity is one thing on my list, as is adjusting the gamma (although this doesn't seem possible).

I'd love any ideas / pointers on this.