Method and apparatus for directional counting of moving objects

Details Method and apparatus for directional counting of moving objects Method and apparatus for directional counting of moving objects

1995-08-31

1996-11-12

Wambach, Margaret Rose

Electrical pulse counters, pulse dividers, or shift registers: c

Applications

Counting animate or inanimate entities

377 10, G06M 1102

Patent

active

055747620

ABSTRACT:
A scheme for directional counting of moving objects capable of counting moving objects stably while determining passing directions of the moving objects accurately. In this scheme, a counting line is set in an image field of the sequential images, and a dynamic image formed by pixels forming the counting line is obtained for each frame and while a succesively updated background image is obtained. Then, a subtraction and binarization processing are applied to the dynamic image and the background image to extract a moving object region, and a moving object image is formed by sequentially labeling the moving object region in time order. Then, a number of moving objects passing through a monitoring target location is counted according to the moving object image, while upper and lower direction judgement regions are set above and below the counting line and a passing direction of each moving object is determined by judging one of the upper and lower direction judgement regions in which the moving object is present at a time of a formation start/end time of the moving object image.

REFERENCES:
patent: 5250941 (1993-10-01), McGregor et al.
Mase, Sato, Suenga and Ishii, A Fast Object Flow Estimation Method Based on Spacetime Image Analysis dated Dec. 7-9, 1992, from IAPR Workshop on Machine Vision Applications.

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