RPI-Examples Object Detection JSON files missing

General
1

Hello,

I am using RPI-5 with Halio-8.1 and followed all instructions / steps for installation.

I installed Zoo Github as well to download inference engines. But, I do not see need JSON files for object detection, segmentation etc in relevant folders.

I get following error:
mobilestack@raspberrypi:~ $ rpicam-hello -t 0 --post-process-file /usr/share/rpi-camera-assets/hailo_yolov8_inference.json
[0:15:32.400564919] [5201] INFO Camera camera_manager.cpp:326 libcamera v0.5.0+59-d83ff0a4
[0:15:32.408202696] [5204] INFO RPI pisp.cpp:720 libpisp version v1.2.1 981977ff21f3 29-04-2025 (14:13:50)
[0:15:32.409218725] [5204] WARN CameraSensorProperties camera_sensor_properties.cpp:473 No static properties available for ‘imx708_wide’
[0:15:32.409230151] [5204] WARN CameraSensorProperties camera_sensor_properties.cpp:475 Please consider updating the camera sensor properties database
[0:15:32.443164490] [5204] WARN CameraSensor camera_sensor_legacy.cpp:501 ‘imx708_wide’: No sensor delays found in static properties. Assuming unverified defaults.
[0:15:32.444946014] [5204] INFO RPI pisp.cpp:1179 Registered camera /base/axi/pcie@1000120000/rp1/i2c@80000/imx708@1a to CFE device /dev/media3 and ISP device /dev/media0 using PiSP variant BCM2712_C0
Made X/EGL preview window
ERROR: *** /usr/share/rpi-camera-assets/hailo_yolov8_inference.json: cannot open file ***

mobilestack@raspberrypi:~ $ rpicam-hello -t 0 --post-process-file /usr/share/rpi-camera-assets/hailo_yolov5_segmentation.json --framerate 20
[0:16:59.397783640] [5370] INFO Camera camera_manager.cpp:326 libcamera v0.5.0+59-d83ff0a4
[0:16:59.405384469] [5373] INFO RPI pisp.cpp:720 libpisp version v1.2.1 981977ff21f3 29-04-2025 (14:13:50)
[0:16:59.406471646] [5373] WARN CameraSensorProperties camera_sensor_properties.cpp:473 No static properties available for ‘imx708_wide’
[0:16:59.406495368] [5373] WARN CameraSensorProperties camera_sensor_properties.cpp:475 Please consider updating the camera sensor properties database
[0:16:59.425480886] [5373] WARN CameraSensor camera_sensor_legacy.cpp:501 ‘imx708_wide’: No sensor delays found in static properties. Assuming unverified defaults.
[0:16:59.426560063] [5373] INFO RPI pisp.cpp:1179 Registered camera /base/axi/pcie@1000120000/rp1/i2c@80000/imx708@1a to CFE device /dev/media3 and ISP device /dev/media0 using PiSP variant BCM2712_C0
Made X/EGL preview window
ERROR: *** /usr/share/rpi-camera-assets/hailo_yolov5_segmentation.json: cannot open file ***

What is missing?

Thanks
-Praveen

2

Hey @Praveen_Gupta,

This is a Raspberry Pi-specific repository. We recommend asking about this issue on their official forum for more targeted support.

In the meantime, you can try the Raspberry Pi detection examples available here:
:backhand_index_pointing_right: GitHub - hailo-ai/hailo-rpi5-examples

3

Hi,

It is an error on the part of Raspberry Pi. The entire basic Hailo implementation is not really clean. The file

hailo_yolov5_segmentation.json

is missing here. However, you can copy it directly from Raspberry Pi and save it in

/usr/share/rpi-camera-assets.

You can find the file here: https://github.com/raspberrypi/rpicam-apps/blob/master/assets/hailo_yolov5_segmentation.json

4

Yes. Correct.

Hailo on Raspberry Pi is a disaster and waste of time. Lot of incompatibility:

  • basic installation in incomplete for RPI EXAMPLE TESTS
  • frigate breaks basic installation.

Please suggest a HW and software combination that works for basic Halio installation as well as Frigate software installation.

We want to focus on actual development (Enhance models and inference stuff) instead of struggling with basic installation issues.

I am abandoning my efforts of RP5 with HALIO.

Thanks
Praveen

| Kletternaut
June 12 |

  • | - |

Hi,

It is an error on the part of Raspberry Pi. The entire basic Hailo implementation is not really clean. The file

hailo_yolov5_segmentation.json

is missing here. However, you can copy it directly from Raspberry Pi and save it in

/usr/share/rpi-camera-assets.

You can find the file here: https://github.com/raspberrypi/rpicam-apps/blob/master/assets/hailo_yolov5_segmentation.json

5

Why are you asking for help if you think it’s a waste of time?
My Pi5s are running fine so far, even if not with the latest kernel, but stable and reliable with 6.6.77/78. And I know that the Raspberry Pi developers are competent and responsive — if you have problems, the maintainers and support react immediately, just like the people here.
The basis for my scripts is also the hailo-rpi-examples, which Omria has already recommended to you.
I just wanted to help you and not start any kind of bashing or negative discussion. I did notice that some files are missing, but my intention was simply to support you and point out possible issues, not to criticize anyone.