UVP Life Science - Manual (Page 219)

Modify Images
205
Display Control
Image Corrections
The image Display Control offers features to control how an image looks. Changes made to images using
this module will not be made permanent by default. All the changes can be reversed with the Reset
button.
Note: If an image is modified in the LS Software and then opened in a different software program,
the changes will not be displayed. To make changes viewable in other programs, use the Flatten
Layers tool. This tool creates a new image with the modifications permanently integrated.
To access the Corrections functions, click on the Image Action Tab and then select the Display Control
menu button.
Corrections
• Brightness
• Contrast
• Gamma
• Invert
The specific functions available on the Image Control module are:
• Brightness: affects the overall brightness or dimness of the image. Brightness level of 50 means
the image is displayed in its original brightness (i.e. unchanged). Changing the brightness level
can make features near the top or bottom of the intensity scale easier to see.
• Contrast: affects the difference between light and dark parts of the image. A contrast level of 50
means that the image is displayed in its original contrast. A level higher than 50 means that
contrast has been increased (lights are lighter, darks are darker). A level lower than 50 means
that contrast has been decreased (lights and darks are both closer to middle values). Increasing
the contrast tends to highlight differences in intensity level; decreasing it can make patterns that
cross intensities more clear.
• Gamma: affects the difference between light and dark parts of the image, but it does so by using
a "gamma correction curve." The gamma correction curve affects middle values more quickly
than values at either the darkest or the lightest ends of the spectrum. Gamma contrast values
range from 0.1 to 5.0. A value of 1.0 means that no gamma correction curve is in effect (the