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An Efficient Region-of-Interest Cropping Algorithm to Extract Small Regions of Video Out of Compressed Video Streams

PSU researchers have created a technology which supports fast and efficient region-of-interest cropping from high-resolution video. We have a mechanism to compress a compliant video stream, and still allow cropping.

Published: 7/23/2009 | Updated: 7/23/2009 | Inventor(s): WU-Chi Feng, Tim Bauman, John Kassebaum, Thanh Dang

Keywords(s): Electronics, Information Technology

Category(s): Information Technology

Transparent Proof-of-Work Mechanism for Protecting Web Applications from Attack

PSU researchers have developed a transparent, backwards compatible proof-of-work system -- a defense mechanism that allows server owners to give client-specific challenges to those requesting access to network resources. All clients are provided tasks to perform prior to access being granted, with easier & harder tasks available depending on the...

Published: 7/23/2009 | Updated: 5/26/2009 | Inventor(s): WU-Chang Feng, Ed Kaiser

Keywords(s): Computer Science, Information Technology

Category(s): Information Technology