How to change Brightness and Contrast for Raster

You change the Brightness and Contrast of an Image with AutoCAD Properties and it is not possible to save the settings back to Raster file.



 

Causes:

AutoCAD and AutoCAD verticals can only change visiblity of Raster files inside the DWG, but have no funcitonlity to change Raster file itself.

Solution:

Changes to Brightness and Contrast should be done with Autodesk Raster Desing command:  IHISTOGRAM
This changes can be saved back to Raster file.