Getting Object Detection working with OOB Raspberry Pi 5 + Raspbian

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1

I bought the Raspberry Pi 5 + AI Kit Fully Assembled from Canakit. It came with Raspian preloaded but found I needed to install a bunch of things and piece some information together to get it working.

Installing Halio Dependencies

Go here and get the deps you need: Software Downloads (this link was inexplicably difficult to find). You want to have 4.18 of everything:
* HalioRT - PCIe driver Ubuntu package (deb) → hailort_4.18.0_arm64.deb
* HailoRT – Python package (whl) for Python 3.11, aarch64 (assuming you’re using Python 3.11) → hailort-4.18.0-cp311-cp311-linux_aarch64.whl
* HailoRT – Ubuntu package (deb) for arm64 → hailort-pcie-driver_4.18.0_all.deb

Install them with supo dpkg -i hailort_4.18.0_arm64.deb && sudo dpkg -i hailort-pcie-driver_4.18.0_all.deb and reboot.

(Sidequest: Installing Python 3.11 if you haven’t)

My preference is to use uv for this:

curl -LsSf https://astral.sh/uv/install.sh | sh
uv python install 3.11
uv venv halio
source halio/bin/activate
uv pip install ./hailort-4.18.0-cp311-cp311-linux_aarch64.whl

Getting object detection working:

I’ll be using the example here: https://github.com/hailo-ai/Hailo-Application-Code-Examples/blob/main/runtime/python/object_detection/README.md

git clone https://github.com/hailo-ai/Hailo-Application-Code-Examples.git
cd Hailo-Application-Code-Examples/runtime/python/object_detection
uv pip install -r requirements.txt

Follow the instructions in the README.md there. I found there were two problems:

  • The model they download in download_resources.sh is not correct, I think it’s for 4.17 instead of 4.18. I found the correct model in the model zoo repository. See yolov7 and download the Compiled model. You can run this command: curl https://hailo-model-zoo.s3.eu-west-2.amazonaws.com/ModelZoo/Compiled/v2.12.0/hailo8l/yolov7.hef -o yolov7.hef, overwriting the previous download if you have it.
  • There is an error with CHECK failed - max_desc_page_size given 16384 is bigger than hw max desc page size 4096. I fixed this by creating the file /etc/modprobe.d/hailo_pci.conf and including options hailo_pci force_desc_page_size=4096 in it.

After these fixes, I can run ./object_detection.py -n ./yolov7.hef -i street.jpg on my own image, stree.jpg and it works.

street_yolov7
street_yolov7640×640 74.4 KB

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Hi @etrip,
Thank you for this guide!
Indeed the Hailo-Application-Code-Examples repo is developed for general systems, while we have the hailo-rpi5-examples that is specific for the Raspberry Pi5 platform.

On each example in the general repo we state to which version it adheres, and sometimes adaptations are needed.

On a Raspberry Pi platform ,you have the convenince of installing all the needed runtime with the apt command of sudo apt install hailo_all