Pink Tint Issue in DOL HDR Mode on Xavier NX (JetPack 5.1.2)

Robotics & Edge Computing Jetson Systems Jetson Xavier NX
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Platform:

  • Board: Xavier NX Devkit

  • JetPack Version: 5.1.2

  • Camera Type: [Insert sensor name and interface: e.g., IMX415 MIPI]

  • Mode: DOL HDR

  • Driver: Custom V4L2 driver integrated with NVIDIA’s camera stack

  • Tuning: Initial tuning completed using the NVIDIA tuning tool

Issue Description:
We are encountering a persistent pink tint issue in the DOL HDR mode even after completing the standard camera tuning process. The pink cast is primarily visible in highlights and overexposed regions of the image. Please refer to the attached image for reference (include a link or image if allowed).

image
image1920×1080 119 KB

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Hello @herethehacker97 ,

How did you implement the DOL-HDR functionality? Did you use virtual channel or line information?

Best regards.

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Create file /var/nvidia/nvcam/settings/camera_overrides.isp and add below parameters to verify.

The DreMin/DreMax should be the same with min_hdr_ratio/max_hdr_ratio in your device tree.

sudo chmod camera_overrides.isp 664

wdr.DOL.v4.EnableDOL = TRUE;
ae.wdr.DreMin = 16;
ae.wdr.DreMax = 16;
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Hi @ShaneCCC we have the isp overrides file and above mentioned parameters are available . values are same as you mentioned. is there any other way that we can eliminate this behaviour.

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i didn’t use virtual channel . just configure the device tree to DOL HDR and also the sensor setting to DOL HDR values in respective registers

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Maybe modify the DreMin/DreMax for example 32 or 64

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it makes more worse

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What’s the real HDR ratio for long/short exposure?

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min_hdr_ratio = “16”;

max_hdr_ratio = “16”;

i tried with 32 and 64 also

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There is no update from you for a period, assuming this is not an issue anymore.
Hence, we are closing this topic. If need further support, please open a new one.
Thanks ~0827

Do you confirm the ratio from the sensor config?