Signal processing apparatus and signal processing method,...

Details Signal processing apparatus and signal processing method,... Signal processing apparatus and signal processing method,...

2007-08-21

2007-08-21

Couso, Jose L. (Department: 2624)

Image analysis

Image enhancement or restoration

Intensity, brightness, contrast, or shading correction

Reexamination Certificate

active

10443926

ABSTRACT:
An input signal is accurately separated into a component in which a change in signal level is sharp and having a large edge, and the other components.A narrow band non-linear filter extracts an edge component in a relatively narrow frequency band from an input signal and outputs the signal. A wide band non-linear filter extracts an edge component in a relatively wide frequency band from the input signal and outputs the signal. A selector outputs a signal composed of the signal where an edge portion is replaced, based on a differentiated value of the signal sent by a differentiator, as the edge component of the input signal. An adder subtracts an output signal from the input signal and outputs the calculated output signal as the edge component of the input signal. This process, may be applied to an image processor.

REFERENCES:
patent: 4597021 (1986-06-01), Yamamitsu et al.
patent: 5614945 (1997-03-01), Sekine et al.
patent: 6018600 (2000-01-01), Levin et al.
patent: 6026184 (2000-02-01), Fukushima
patent: 6754398 (2004-06-01), Yamada
patent: H06-141234 (1994-05-01), None
patent: H08-079558 (1996-03-01), None
patent: H11-017984 (1999-01-01), None
patent: 2000-156816 (2000-06-01), None

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