Image analysis – Applications – Target tracking or detecting
Reexamination Certificate
2006-04-25
2006-04-25
Werner, Brian (Department: 2621)
Image analysis
Applications
Target tracking or detecting
C382S270000, C358S003220, C348S169000
Reexamination Certificate
active
07035430
ABSTRACT:
A monitoring method and apparatus for detecting an intruding object within a monitoring field of view by applying a subtraction method to an image obtained from an imaging device. A differential image of luminance values between an input image from the imaging device and a reference background image stored in a storage device is generated. The differential image is binarized using a predetermined binarization threshold value and the bianrization threshold value is changed until a noise level of a bianrized image becomes not greater than a predetermined value and based on a binarization threshold value at which the noise level becomes not greater than the predetermined value, an intruding object is detected.
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Ito Wataru
Ueda Hirotada
Yamada Hiromasa
Hitachi Kokusai Electric Inc.
Lavin Christopher
Werner Brian
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