Apparatus for detecting a foreground region for use in a low bit

Details Apparatus for detecting a foreground region for use in a low bit Apparatus for detecting a foreground region for use in a low bit

1995-12-28

1998-07-28

Johns, Andrew W.

Image analysis

Pattern recognition

Feature extraction

382206, 382194, 382195, 382199, 382221, 382239, 382118, 348415, 3582612, G06K 946, G06K 952, G06K 948, G06K 968

Patent

active

057871990

ABSTRACT:
An apparatus, for use in a low bit-rate image signal encoder, for detecting a foreground region in an image signal, wherein the image signal has a number of objects therein and the foreground region has at least one moving object therein, which comprises: a previous frame memory for storing a previous frame of the image signal; a current frame memory for storing a current frame of the image signal; a change detector for comparing the current frame and the previous frame to detect changed pixels, each changed pixel having a differential luminance value; a region detector for detecting an object region for one of the objects in the current frame; and a foreground/background determinator for counting the number of all of the pixels contained in the object region to determine a first size of the object region; and for counting the number of changed pixels which are located in the object region to determine a second size of the object region; and for comparing the first size with the second size to determine whether the object region is the foreground region.

REFERENCES:
patent: 5150432 (1992-09-01), Ueno et al.
patent: 5237410 (1993-08-01), Inoue
patent: 5247590 (1993-09-01), Fukuhara
patent: 5373567 (1994-12-01), Takahashi et al.
patent: 5467086 (1995-11-01), Jeong
patent: 5490225 (1996-02-01), Kumagai
patent: 5546129 (1996-08-01), Lee
patent: 5596362 (1997-01-01), Zhou
patent: 5612743 (1997-03-01), Lee
patent: 5615287 (1997-03-01), Fu et al.

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