Fix pink tint on Jetson Nano wide angle camera

Update: If you are using newer Jetson software, note that you might need to use a newer isp profile. I haven’t verified it yet so please give it a shot and let me know.

Thanks Ville Saukkonen for mentioning this to me.

A lot of people are very interested in Nvidia recently announced Jetson Nano and JetBot. In many use cases including the JetBot and Donkey Car, we would want to use a wide angle camera. One of the recommended camera module for Jetson Nano is a Raspiberry Pi v2 camera module. This camera come with a standard camera lens which is not a wide angle lens. To convert this camera to a wide angel lens, you would need to buy a wide angle lens and replace it.

Image for post
Image for post
A Raspiberry pi camera module v2 and a wide angle lens module

Alternatively, you could also choose a IMX219 compatible wide angle camera. If you are using it for Donkey car, I would recommend you to get this option because it fits better into the new cage.

The pink tint

However, no matter which camera you choose, all of them exhibit a red or pink tint on the outer area of the image like below:

Image for post
Image for post

This pink or red tint is disturbing because it would interfere with the CV algorithm. Until recently, someone on the Nvidia forum has released a tuning profile for the wide angle camera and I confirm it works on the IMX219 compatible wide angle camera.

Here is how you could use the fix:

Download the tuning profile for Jetson 4.2:

For JP4.4 or above, you might want to try this isp profile:

Copy it to the directory

The result

Image for post
Image for post
The red tint is gone (left) after the profile is applied

Fantastic, the pink or red haze is gone!

Love Self-driving technology and machine learning. Community leader in DIYRobocar Hong Kong.

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store