YOLOv8-seg compilation error on Hailo-8: concat18 mapping failed. What is solution?

General Discussion
13

UPDATE - SOLVED ✓

Problem Summary:

  • YOLOv8-seg custom model (tire detection, 4 classes)
  • GStreamerInstanceSegmentationApp only supports YOLOv5-seg
  • Missing post-processing library for YOLOv8-seg

Solution: DeGirum PySDK

The Hailo community guide pointed me to DeGirum PySDK, which has native YOLOv8-seg support.

What I did:

  1. HEF compilation (hailomz) - ✓ No issues
  2. Install DeGirum: pip install degirum
  3. Create Model Zoo directory with:
    • best.hef (compiled model)
    • config.json (model configuration + Checksum required!)
    • labels.json (class names)
  4. Run inference with simple Python code

Results:

  • ✓ Real-time webcam: ~10 FPS (Raspberry Pi 5 + Hailo-8)

Key Points:

  • DeGirum handles YOLOv8-seg post-processing internally
  • No need to write custom .so files
  • JSON configuration is straightforward
  • Webcam requires GStreamer backend (not V4L2)

Resources:

Big thanks to the Hailo team and community for the excellent support!

I’ll be back if I run into any new issues during development! :+1:

1 Like