Displays an interactive Histo-Contrast dialog with settings, and before and after thumbnails.

Use the Histo-Contrast dialog to increase or decrease the contrast in the image. This process finds the median brightness of the image or the selection, using the histogram of the image or the selection. It then brightens the pixels with values above the median and darkens the pixels with values below the median. This generally results in better results than normal contrast. If an image has 8 bits/pixel or less, the dialog will ignore any selections, embedded or floating, and it will apply the effect to the entire image.

Zoom: the preview thumbnails can either be 1:1 (actual size) or they can fit the thumbnail size.
Zoom tool: display the zoom toolbar buttons on the dialog.
Auto-process: the dialog will process the image with the selected dialog options; so, a separate call to the LEADTOOLS Histo Contrast function is not required.
Help: the dialog can display a context sensitive help icon.
Show preview: dialog will have a thumbnail preview of the before and after of the image.