Motion detection circuit and method using spatial information

Details Motion detection circuit and method using spatial information Motion detection circuit and method using spatial information

1994-11-25

1996-11-26

Chin, Tommy P.

Television

Image signal processing circuitry specific to television

Motion vector generation

348700, H04N 514

Patent

active

055790585

ABSTRACT:
A motion detection circuit and method using spatial information obtains spatial correlation information in various directions of a frame and compares the spatial correlation information with a value corresponding to a previous frame to thereby effectively use a frame memory to accurately detect motion. The motion detection circuit uses a number of line memories and delays to delay an input signal and transform the delayed signal into samples necessary for extracting spatial correlation information. Subsequently, the motion detection circuit obtains a subtraction value of the sample, compares the subtraction value with a reference value, and extracts spatial correlation information. Also, the motion detection circuit uses a comparator to compare proper bit spatial correlation information with a pixel value corresponding to a previous frame stored in a frame memory and to determine whether the input signal is in a moving area or a stationary area.

REFERENCES:
patent: 4464789 (1984-08-01), Sternberg
patent: 5153719 (1992-10-01), Ibenthal

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