Image analysis – Applications – Motion or velocity measuring
Patent
1996-05-13
2000-12-26
Chang, Jon
Image analysis
Applications
Motion or velocity measuring
348155, G06T 720
Patent
active
061671436
ABSTRACT:
A monitoring system includes at least one camera (1) for generating a sequence of video images, and a control circuit (2). The control circuit (2) is provided for forming a difference image of two block-structured, consecutive video images and for generating status bits allocated to a stationary or a moving object for each block of a difference image. The control circuit (2) is further used for characterizing, by means of an area mark, contiguous status bits constituting an area and allocated to a moving object for determining an area parameter from the status bits of an area and for triggering an alarm when a predetermined condition of one or more area parameters is reached.
REFERENCES:
patent: 3953670 (1976-04-01), Prince
patent: 4198653 (1980-04-01), Kamin
patent: 4297725 (1981-10-01), Shimizu et al.
patent: 4408224 (1983-10-01), Yoshida
patent: 5099324 (1992-03-01), Abe
patent: 5134472 (1992-07-01), Abe
patent: 5243418 (1993-09-01), Kuno et al.
patent: 5339104 (1994-08-01), Hong
patent: 5355326 (1994-10-01), Florent
patent: 5459793 (1995-10-01), Naoi et al.
patent: 5552823 (1996-09-01), Kageyama
patent: 5604821 (1997-02-01), Ranganathan et al.
Gonzalez and Woods, Digital Image Processing. Addison-Wesley, pp. 41-43 and 503, Mar. 1992.
Gonzales et al, "Digital Image Processing," 1992, Addison-Wesley, pp. 465-468.
Chang Jon
U.S. Philips Corporation
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