To use nonlinear local contrast enhancement:

From the softWoRx menu, choose Filter | Enhance Contrast to open the Local Contrast Enhancement window.
In the Input field, enter an image file name or window number.
To include only selected data, click Details to open the Region Details window. Then specify the ranges of data that you want to include in the Output Options fields.
Select which wavelengths to filter.
Specify the box size (in pixels) that determines the size of the region used for the local mean and contrast calculations. Only odd values are valid.
To reposition the intensity scaling curves based on the minimum/maximum values of the local mean and contrast, select AutoRange.
In the Min/Max fields, specify the minimum and maximum values of the intensity scaling curve.
To modify the intensity scaling curves displayed on the LM weight function and LC weight function histograms, select one of the three points on the curves with the mouse and move the point to the left or right.
In the Apply To option list, choose one of the following options for applying the contrast enhancement:

All Sections creates a regular output image file or window.

Current Section stores the result in a temporary ("Scratch") window.
Click Do It to create the filtered output.