How do I get the brighter image from KINECT by using xef2mat or kinecttomat

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MatLab

Kinect

The Kinect studio has the Amplification and Gamma parameters for visualization. I try to use the library (https://www.codeproject.com/Tips/819613/Kinect-Version-Depth-Frame-to-mat-File-) to extract the IR frames to .mat file. Then, I convert the mat file to .tif image. After running, the images is too dark which it hard to visualize.

I want to get brighter images.
What should I do to solve this problem?


Please suggest. Thank you.

What I have tried:

I try to adjust the parameter from Kinect studio v2.0( my Kinect v2). Then use Xef2mat-master for writing .mat file, many times i got the same color pattern of the images even i changes the Amplification and Gamma directly to Kinect studio.