Improving white balance via GenTL producer

Questions & Answers
1

General Information

  • Product: CR67-4-S
  • Serial Number: 258807
  • Ensenso SDK Version: 4.3.1057
  • Operating System: Windows 11

Problem / Question

Hi,

I am using the GenTL producer via Halcon to produce a point cloud with texture (as it was suggested in this post Capturing images with a single frame grabber in MVTec Halcon )

One difference we recognized between this approach and the rendered point cloud generated in the NxView application is the white balance of the RGB image. It seems like the RGB image via GenICam consistently shows higher blue values, even though no other settings were applied. The only changeable parameters for the intensity image are ExposureTime and Gain. Is there a way to correct the white balance/ adjust the RGB values as well?

Attached are 1) a screenshot of a point cloud as produced by NxView, 2) the same image created via GenICam using Halcon.

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2

The GenTL producer uses the NxLib’s default values when it opens a camera, not what you set up in NxView. I am not sure why that is so blue for your camera, I will have to investigate that. But I assume you enabled white balancing in NxView to get it to the better color. NxView saves those settings on your PC and applies them by default when you open it the next time.

You can transfer your settings from NxView to GenTL by saving them to the device memory. The GenTL producer will load them automatically.

In the next version there will also be GenICam parameters for controlling white balance directly from GenTL.