Kornia Imgproc Sobel Node

A Dora dataflow node for real-time Sobel edge detection using Kornia-RS.

Overview

This node applies Sobel edge detection to incoming image frames, highlighting edges and boundaries in the image.

Usage

nodes:
  - id: sobel_filter
    build: cargo build -p kornia-imgproc-sobel --release  
    path: target/release/kornia-imgproc-sobel
    inputs:
      frame: v4l-capture/frame
    outputs:
      - output

Configuration

The node automatically adapts to incoming frame dimensions and encoding. No additional configuration is required.

Algorithm Details

• Sobel operator: 3x3 kernel for edge detection
• Color conversion: YUYV converted using BT.601 Full range
• Output format: Float32 Sobel values mapped to U8 range

Dependencies

• dora-node-api - Dora runtime integration
• kornia-image - Image data structures
• kornia-imgproc - Image processing operations
• kornia-io - JPEG decoding

Examples

See the parent dora-nodes-hub for complete pipeline examples using this node.

License

Apache License 2.0 - see LICENSE for details.