The methods in the patent were originally developed for use in On2’s VP7 and VP8 encoders.
Click to enlarge
On2 Technologies, a provider of video compression solutions, has been granted patent number 7,499,492 for methods that increase the compressibility of digital video segments through better intraframe prediction.
The methods in the patent were originally developed for use in On2’s VP7 and VP8 encoders, but may be integrated into any image or video compression algorithm that involves intraframe predictive encoding.
One of the technologies described in the patent uses medium- to-long-distance first order prediction as an alternative to directly copying the predicted pixels from pixels immediately above and/or to the left of the predicted block.
In one application, a rate and direction of change or slope is calculated using pixels to the left, above and above-left of the pixel to be predicted; this slope is then used to predict the current pixel's intensity. The technique works well for blocks involving consistent gradation in pixel intensities. The mode is the second most frequently chosen by the encoder in an RD sense on intra frames after a mode approximates a DC coefficient prediction.
This eBook provides both new and veteran shooters an in-depth understanding of the technology that lies between the camera lens and the recording medium and how to maximize a camera's performance.
File-based technologies have replaced video tape methods for a majority of production and broadcast operations. The worlds of AV and IT are coalescing to create new methods and workflows for media
Video compression, editing and displays is an in-depth tutorial on MPEG compression technology, editing MPEG content and evaluating color video monitors written by long-time video expert, trainer and writer Steve Mullen, Ph. D.
2012 will be the year of mobile DTV. That’s the view of Erik Moreno, who along with Salil Dalvi, senior VP for Mobile Platform Development at NBC Universal, is co-general manager of the Mobile Content Venture.
Hear snippets of podcast interviews done throughout 2011 with Pat McDonough of The Nielsen Company, Glen Friedman of Ideas & Solutions!, Danny Wilson of Pixelmetrix and Greg Herman of Watch TV. Pictured is Danny Wilson, Pixelmetrix.
