Using the Histogram

You can use the Histogram tab in the Control Panel to do the following with digital radiographic images (not color images):

Show a graphical plot of pixel grayscale in the image.
Adjust image brightness, contrast, and gamma.
Use the Transfer function (an orange curved line that is a plot line of grayscale against luminance).

Adjustments made to the image, and their effect on the Transfer function, are displayed in real-time.

To display the Histogram tab, follow these steps:

Click on an image in the Image Viewing Workspace or Darkroom mode.
In the lower right-hand corner of the Image Viewing Workspace or Darkroom, click .
In the Control Panel, click to display the Histogram tab.