Arducam IMX477 IR-Cut filer purple tint when in nightvision mode

Raspberry Pi Cameras
1

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

  2. Model number of the product(s)?

  • IMX477 IR-CUT (SKU: B0274)

  1. What hardware/platform were you working on?
    Raspberry pi 4

  2. Instructions you have followed. (link/manual/etc.)
    Quick Start Guide

  3. Problems you were having?
    I am encountering difficulties with the camera’s performance in night vision mode, as it produces a prominent blue/purple tint. This tint is causing interference with my AI human detection algorithm.

Here are some images showing the purple tint:

test
test1920×1439 45 KB

test1
test11920×1439 50.1 KB

test2
test21920×1439 58.8 KB

I have tried the Arducam-477M.json and the default imx477-noir file

I am seeking guidance on how to address this issue and whether it is possible to modify the camera settings to render the night vision mode in black and white, which would be more compatible with my requirements.

Please help me with this issue

2

@DeadSlayer

This is the normal expected effect.

image
image1053×789 150 KB