E-Paper Floyd-Steinberg

Instroduction

Floyd-Steinberg dithering algorithm is suitable to show a rich sense of gradation based on a picture that has few colors. This makes it possible to obtain more color combinations and perform better shadow rendering on the original picture, especially suitable for e-Paper display.
This instruction we will show you how to made Floyd-Steinberg image
You can also refer to the demo codes of ESP32 or ESP8266 about the realization of the Floyd-Steinberg algorithm.

How to do

Download the color table to your PC and unzip it

Create a new Photoshop project, and set the resolution according to the e-Paper you use, set the color mode to RGB. For example, we use 7.5inch e-Paper whose resolution is 800*480 as example.

Import the image to project, adjust the image as you want

Select File -> Export -> Save as Web...

Import the color table

For black/white e-Paper, import Black-White.act, and save the image.

For black/white/red e-Paper, import Black-White-Read.act and save.

For black/white/yellow e-Paper, import Black-White-Yellow.act and save.

For Seven-colors e-Paper, import N-color.act and save.

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E-Paper Floyd-Steinberg

Instroduction

How to do

Raspberry Pi 4 Model B GPIO Expansion Board io Board for 2B/3B+/4B