Method for picture sharpening in a digital video transmission sy

Details Method for picture sharpening in a digital video transmission sy Method for picture sharpening in a digital video transmission sy

1996-02-06

1998-10-13

Moore, David K.

Image analysis

Image enhancement or restoration

Variable threshold, gain, or slice level

358457, 3582613, G06F 1710

Patent

active

058224700

ABSTRACT:
The invention relates to a method for processing a data signal which is transformed into an n-dimensional matrix form and which is to be processed by an n-dimensional quantizing matrix. In the invention the n-dimensional quantizing matrix is processed by an n-dimensional transfer function matrix before processing the data signal. In order to form the transfer function matrix, at least one transfer function is selected, and it is given a fixed point in the n-dimensional transfer matrix. At least a part of the elements of the transfer function matrix are processed by at least one transfer function, so that elements at a predetermined distance from the fixed point are processed by a processing quantity dependent on the transfer function.

REFERENCES:
patent: 4862263 (1989-08-01), Strobach et al.
patent: 5293434 (1994-03-01), Feig et al.
patent: 5301027 (1994-04-01), Kiyofuji et al.
patent: 5523847 (1996-06-01), Feig et al.
patent: 5539836 (1996-07-01), Babkin

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