Image monitoring method, image monitoring apparatus and storage media

Abstract

In order to precisely detect abnormal objects by use of 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 are provided a means 4200 for subdividing an image being input from a camera into blocks, an object candidate extraction unit 4700 which is operable to compare image data of a frame to be processed and image data of its 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 radio change rate, and an object judging unit 4800 for determining or “judging” whether the abnormal object candidate is a true abnormal object or not, wherein the object judging unit 4800 regards it as an abnormal object in cases where movement of the abnormal object candidate was traceable for a prespecified length of time period.

1 - 10 . (canceled)  
   
   
       11 . An image monitoring apparatus for detecting abnormality of an object image connected to an image coding device for compressing and coding an image being input from a camera, and 
 an image decode/playback device for decoding and reproducing coded data from said image coding device, said image monitoring apparatus being characterized by further comprising    an object candidate extracting means for detecting an object candidate of an abnormal object from a change of time elapse of a block data compressed and coded by said image coding device, and    an object judging means for judging said abnormal object by comparing time elapse data of said coded data from said image coding device, when said object candidate extracting means extracts said object candidate.