Welcome to Onyx-RAD - Viztek

Unsharp MaskingUnsharp Masking is a technique which processes an imageinto a clearer and more defined image. In general, sharpparts of an image are sharpened and less defined areasbecome clearer. It is a better technique than simplesharpening because the results are much less harsh than asimple sharpen would produce.Unsharp Masking is most effective on large, CR images,such as those acquired from an Orex PcCR scanner.To use the Unsharp Masking tool:1. Place mouse cursor over the image.2. Click the right mouse button to bring up the ImageContext menu.3. Click (with left mouse button) the “Unsharp Mask”entry.4. Click (with left mouse button) the percentage youwould like to use. Higher values will unsharp maskthe image more, but may result in a harsh image.5. Wait a moment for the system to process the image.To “undo” the effects of unsharp masking and return theimage to its original state, use the Unsharp Masking toolagain but choose “Reset” from the percentage menu.Onyx-RAD is a registered trademark of Viztek, Inc. © 1995-2002 Page 57