Television – Bandwidth reduction system – Data rate reduction
Patent
1994-02-22
1995-11-14
Britton, Howard W.
Television
Bandwidth reduction system
Data rate reduction
348416, H04N 732
Patent
active
054671353
ABSTRACT:
A method of coding image data with coefficients between fields by increasing the coefficients prior to coding comprising the steps of: (1) detecting a motion vector in a reference field to a sample field to check whether the reference field is zoomed in or out relative to the sample field, data of the reference field being coded based on the sample field; (2) zooming out the reference field when the reference field is zoomed in relative to the sample field, and zooming in the reference field when the reference field is zoomed out relative to the sample field according to the motion vector; and (3) coding the reference field after the reference field has been zoomed according to the motion vector in the second step. In the second step, the reference field may be zoomed out by eliminating pixels that are not adjacent in one of a vertical direction and a horizontal direction.
REFERENCES:
patent: 4924310 (1990-05-01), von Brandt
patent: 5262856 (1993-11-01), Lippman
patent: 5311310 (1994-05-01), Jozawa
"Differential Estimation of the Global Parameters Zoom and Pan", by M. Hoetter, vol. 16, No. 3, Mar. 1989, Amsterdam/Netherlands, pp. 249-265.
"An Edge Detection Approach to Digital Image Stabilization Based on Tri-State Adaptive Linear Neurons", by Joon Ki Paik et al., IEEE Transaction on Consumer Electronics, vol. 37, No. 3, Aug. 1991, New York/USA, pp. 521-529.
Fujiwara Yuji
Matuda Toyohiko
Nishino Masakazu
Yamane Yasuhiko
Britton Howard W.
Matsushita Electric - Industrial Co., Ltd.
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