Contrast

$image\SHORTCUT.gif$ Back to the Main Topic

Contrast

This command enables you to adjust the brightness of an image.

\imgedit Contrast@

The system asks you to indicate an image to be modified. After you confirm your choice of image, ARC+ opens a dialog box that helps you control and view the modification:

$image\ebx_1204160657.gif$

When the value is greater than zero, the contrast is increased.

$image\ebx_-890034218.gif$

When the value is lower than zero, the contrast is reduced.

This dialog box contains two "Before-After" windows for a dynamic preview of the modification.

The $image\ebx_2025542677.gif$ button enables you to view the entire image; the $image\ebx_-896310760.gif$ button enables you to view a detail of the image in actual pixel size.

The Factor potentiometer enables you to increase or reduce the image contrast. The default value is zero (at the center of the potentiometer). Move the cursor to the left (0 to -1000) to reduce the image contrast or to the right (0 to 1000) to increase it.

You can also enter a value (-1000 to 1000) in the numerical range located to the left of the potentiometer.

Click Ok to modify the image or click Cancel to cancel the modification and exit the dialog box.

Before applying the modification, the system asks you to indicate a modification setting: apply the change only to the selected image (frame) or to the indicated image (frame) and all its copies.