The brightness and color of images are incorrect

[hirasawaryo]

Hi, I use VisionActor to send Unreal Engine camera images to ROS. However, the images are much darker than expected. Additionally, the colors of bright pixels, caused by reflection or emission, are incorrect. What might be the cause of the images becoming darker and having incorrect colors?

Image of Unreal Editor (I expect this view.)

Image of ROS (I don't expect this view.)

Even when I adjust parameters such as Exposure and Shutter speed in the PostProcessVolume settings of VisionActor, which should affect the brightness, I am unable to change the brightness of the images. Other settings such as image size, FOV angle, and color grading can be modified. Is it possible to adjust the image brightness of VisionActor through Unreal Engine settings?

Note:
I am using Unreal Engine 5. ROSIntegration and ROSbridge, which forked by tsender, enable topic communication between UE5 and ROS2. For ROSIntegrationVision, I have resolved several build errors to enable topic communication for color images.

Unreal Engine: 5.2.1
ROS: ROS2 Humble
OS: Windows 10 (UE5), WSL2/Ubuntu 22.04 (ROS2)
tsender's repositories:
https://github.com/tsender/ROSIntegration
https://github.com/tsender/rosbridge_suite

[ranjitkathiriya544]

Can you add your vision code(ROSIntegrationVision), I will have a look.