Chapter 700: FreiChenShader

Core Idea

Reference for FreiChenShader.

Key Concepts

• FreiChenShader : ShaderMaterial~Shader (inner, constant): Edge Detection Shader using Frei-Chen filter. Based on [http://rastergrid.com/blog/2011/01/frei-chen-edge-detector](http://rastergrid.com/b…

Code Examples

import { FreiChenShader } from 'three/addons/shaders/FreiChenShader.js';

• What it demonstrates: Typical usage of FreiChenShader.

Reference Tables

Properties

Property	Description
.FreiChenShader : ShaderMaterial~Shader (inner, constant)	Edge Detection Shader using Frei-Chen filter. Based on http://rastergrid.com/blog/2011/01/frei-chen-edge-detector.

Key Takeaways

1. Most relevant properties: FreiChenShader.

Connects To

• Source: examples/jsm/shaders/FreiChenShader.js