Stretch Histogram

Command

Image
Stretch Histogram

Description

Allows to optimize contrast by selecting a lower and upper threshold value of pixel intensity.

Dialog box

The dialog box displays a histogram of pixel intensities. The upper and lower threshold values are represented by vertical red lines.

You drag the red lines to the required threshold values.

• pixels with a pixel intensity less than the lower threshold value will be black.
• pixels with a pixel intensity higher than the upper threshold value will be white.
• the pixel intensity between the two threshold values will be stretched over the full range of possible pixel intensities.

Click Preview to judge the results.

Click OK to proceed.

Example

Before:		After:

See also

• Contrast Auto Fix
• Background Correction
• Image menu