Video encoding method and system which encodes using a rate-quan

Details Video encoding method and system which encodes using a rate-quan Video encoding method and system which encodes using a rate-quan

1995-08-31

1997-03-18

Ramirez, Ellis B.

Boots, shoes, and leggings

G06F 1700

Patent

active

056129009

ABSTRACT:
A system and method for determining quantization level versus bit-rate characteristics of raw video signals in video frames during a pre-encoding phase for video technologies such as MPEG and MPEG-2. During a pre-encoding phase, various quantization levels are assigned to various parts of a frame, and the frame is then pre-encoded to determine a bit-rate for each quantization level used in the pre-encoding phase. Depending on the embodiment, quantization levels are assigned in one of many ways: checkerboard style, block style or any other distribution that avoids statistical anomalies. The method and system repeat the pre-encoding for plural frames, recording all quantization level versus bit-rate statistics on a frame by frame basis. These statistics are then used during encoding or re-encoding of a digital video to control the number of bits allocated to one segment of the digital video as compared to another segment, based on a target quality and target storage size for each segment. The resulting encoded digital video is stored on a digital storage medium, such as a compact disc.

REFERENCES:
patent: 4517596 (1985-05-01), Suzuki
patent: 5016010 (1991-05-01), Sugiyama
patent: 5028999 (1991-07-01), Vogel
patent: 5283646 (1994-02-01), Bruder
patent: 5335016 (1994-08-01), Nakagawa
patent: 5381275 (1995-01-01), Nitta et al.
patent: 5400077 (1995-03-01), Cookson et al.
patent: 5488570 (1996-01-01), Agarwal
patent: 5535138 (1996-07-01), Keith
Visual Communication And Image Processing '91: Visual Communication, Kou-Hu Tzou, Toshio Koga, Chairs/Editors, 11-13 Nov. 1991 Boston, Massachusetts, SPIE Volum 1605, Part One of Two Parts.
Motion-Compensated Video Coding With Adaptive Perceptual Quantization -Atul Puri and R. Aravind, IEEE Transactions on Circuits and Systems for Video Technology, vol. 1, No. 4, Dec. 1991.
JPEG++: Selective Compression For High Quality Color Desktop Publishing -Adriaan Ligtenberg, Storm Technology, Inc.--IEEE Compcon 1991 Spring.
The Art Of Video Encoding--Optimizing MPEG Video Compression Through Human-Assist Methods, Mauro Bonomi, Minerva Systems, Inc., Santa Clara, CA.
Joint Multi-Channel Bit-Rate Control For Multiplexed MPEG Video Using Rate-Distortion Curves -D. Reininger, Kuriacose Joseph and Lee Chun An, David Sarnoff Research Center, Princeton, NJ 08513-5300.
Information Technology--Generic Coding Of Moving Pictures And Associated Audio Information--Part 1: Systems--Draft International Standard ISO/IEC DIS 13818-1.
Information Technology--Generic Coding Of Moving Pictures And Associated Audio Information--Part 2: Video--Draft International Standard ISO/IEC DIS 13818-2.
Information Technology--Generic Coding Of Moving Pictures And Associated Audio Information--Part 3: Audio--Draft International Standard ISO/IEC DIS 13818-3.

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