HDR image with pivariety camera IMX462

  1. Where did you get the camera module(s)?

  2. Model number of the product(s)?
    arducam-pivariety 10-000c

  3. What hardware/platform were you working on?
    RPI zero W 2

  4. Instructions you have followed. (link/manual/etc.)
    Compile driver and device tree: How to install and build Raspberry Pi Kernel Driver for Arducam Pivariety Camera
    Compile libcamera: base on libcamera commit: 2f75a7e5b8c6258dc12e9e3128cb30133f66b4f9

  5. What help do you need?

My camera work just fine and I’m very happy with the low light result.

BUT I need to produce HDR image which should be a functionality of the IMX462 sensor.
Typically, I have image with some bright part and some dark part:

  • surveillance at night with some part of the scene illuminated by a very directive light
  • dark indoor image with a large window on a brightly lit outdoor.

The camera fail to produce usable images for those scenarios.
Sony claims that IMX462 support multiple exposure and DOL HDR but I suppose that the arducam driver needs to support it.

Thank you for any help or information

The problem is that the Raspberry Pi’s ISP does not support HDR, and even though the IMX462 supports HDR output, the Raspberry Pi’s ISP cannot handle it. .