04922341 is referenced by 81 patents and cites 3 patents.

A method for scene-model-assisted reduction of image data for digital television signals, whereby a picture signal supplied at time t is to be coded, whereby a predecessor frame from a scene already coded at time t-1 is present in an image store as a reference, and whereby the frame-to-frame information are composed of an amplification factor, of a shift factor and of an adaptatively acquired quad-tree division structure, and it is provided that, upon initialization of the system, a uniform, prescribed gray scale value or picture half-tone expressed as a defined luminance value is written into the image store of a coder at the transmitter and in the image store of a decoder at the receiver store, and are in the same way for all picture elements (pixels), and both the image store in the coder as well as the image store in the decoder are each operated with feed back to themselves in a manner such that the content of the image store in the coder and decoder can be read out in blocks of variable size, and can be amplified with a factor greater than or less than 1 of the luminance and can be written back into the image store with shifted addresses, whereby the blocks of variable size are organized according to a known quad-tree data structure.

Title
Method for scene-model-assisted reduction of image data for digital television signals
Application Number
7/249371
Publication Number
4922341
Application Date
September 26, 1988
Publication Date
May 1, 1990
Inventor
Peter Strobach
Roehrbach
DE
Agent
Hill Van Santen Steadman & Simpson
Assignee
Siemens Aktiengesellschaft
IPC
H04N 7/137
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