If you’ve ever composited two images in an application such as Adobe Photoshop, you know how time-consuming and tedious selecting an area from one image for compositing with another can be. The first version of KnockOut (
, January 1999) was a great solution to even the most difficult masking problems, and Corel’s KnockOut 1.5 (produced by Ultimatte) offers some simple new tools that make building complex masks even easier.
As with version 1, you define a mask by painting two paths — one inside the object to be masked, the other outside. KnockOut analyzes the area between these paths to build a mask that eliminates your selection’s background. The new Loupe Zoom tool makes drawing a precise path easier by magnifying the image as you make your selection. And you can now test the accuracy of your mask more easily by inserting another image or color plate behind it.
You can create complex masks in KnockOut 1.5 by outlining the inside and outside of an object.