|United States Patent Application||20070113242|
|Fetkovich; John E.||May 17, 2007|
Selective post-processing of compressed digital video
The primary issue regarding the transmission of digital video to automobiles is limited bandwidth. To help combat bandwidth issues, compression techniques have been developed to reduce the high bit rate required for transmission and storage. However, methods for improving the perceived quality of digital imagery, particularly at low bit rates, are critical. The present invention discloses a technique that will improve the perceived quality of digital imagery to the viewer by using selective post-processing of decompressed digital video. The human visual system (HVS) is very sensitive to human eyes and faces. Regions of interest (ROI), such as human eyes or faces, are selectively post-processed in appropriate video frames prior to being displayed to the viewer. If a subject's eyes are sharp, the viewer will perceive good image quality, despite poor rendition elsewhere. If the subject's eyes are blurry or poorly rendered, the frame will appear poor to the viewer, despite sharpness elsewhere.
|Inventors:||Fetkovich; John E.; (Kokomo, IN)|
|Correspondence Name and Address:|| |
DELPHI TECHNOLOGIES, INC.
|Filed:||November 16, 2005|
|U.S. Current Class:||725/19; 382/118; 725/135|
|U.S. Class at Publication:||725/019; 725/135; 382/118|
|Intern'l Class:||H04H 9/00 20060101 H04H009/00; H04N 7/16 20060101 H04N007/16; G06K 9/00 20060101 G06K009/00|
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