Image monitoring method, image monitoring apparatus and...

Details Image monitoring method, image monitoring apparatus and... Image monitoring method, image monitoring apparatus and...

2005-11-01

2005-11-01

Chang, Jon (Department: 2623)

Image analysis

Applications

Target tracking or detecting

C382S107000, C382S236000, C348S154000, C348S155000

Reexamination Certificate

active

06961447

ABSTRACT:
In order to detect abnormal objects with a low-cost arrangement at high speeds while avoiding unwanted influence of variations of a light source and/or regularly vibrating objects in the environment concerned, there is provided a block data calculation unit4200inputted from a camera into blocks, an object candidate extraction unit4700which compares image data of a frame to be processed and the immediately preceding frame in units of blocks to thereby extract an abnormal object candidate in accordance with the presence or absence of edges and a longitude-to-lateral edge ratio change rate, and an object judging unit4800for determining or “judging” whether the abnormal object candidate is a true abnormal object, wherein it is an abnormal object where movement of the abnormal object candidate is traceable for a prespecified length of time period.

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