KnockOut 2 did not rely on simple edge detection. It used a method. You would draw an "inside" line (the subject) and an "outside" line (the background), and the software would mathematically analyze the pixels at the boundary between those two selections. For semi-transparent objects like veils, water, or glass, this produced results that standard Photoshop channels could not match.
Currently, the software is or sold as a primary product by Corel. Because it was designed for older operating systems like Windows 98/2000 and Mac OS 8.6–X, it is generally incompatible with modern 64-bit versions of Adobe Photoshop (Creative Cloud) without significant workarounds or emulation. Installation and Technical Details KnockOut 2 did not rely on simple edge detection
. Because it was designed for much older operating systems and 32-bit versions of Photoshop, it may not function correctly on modern 64-bit systems like Windows 11 or recent macOS versions. Download Options For semi-transparent objects like veils, water, or glass,