View Window - Image | Process | Stretch Channels                    Shift+T

Main Window - Image | Batch Process - Batch Steps - Add | Process | Stretch Channels

 

 

Use this menu selection to stretch each color channel in the open image individually. Color channel values will be mapped, from the current range found in the image, to values in the range of 0 to 255.

 

NOTE: This process is similar to use the "Stretch" button in the Image | Histogram dialog whith the "Show Channels" option enabled. If you want to work on the global intensity levels of the image, use the Histogram function with the "Show Channels" option disabled.