Method and system monitoring video image by updating template image
First Claim
1. A video image monitoring method for monitoring an object to be picked up by image pick-up means, comprising:
- a first step for producing a difference between an input image and a background image, in order to obtain the image of said object, said input image including said background image and the image of said object to be monitored from said image pick-up means;
a second step for dividing the image of said object into a plurality of parts to produce a plurality of divided images of said object, each of which is a template;
a third step for matching each of said templates with a new input image and detecting a plurality of parts of said new input image having highest degrees of matching with said templates; and
a fourth step for updating said templates using said parts of said new image having said highest degrees of matching as a plurality of new templates, wherein said fourth step is sequentially executed for new input images to sequentially update said templates to trace said object.
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Abstract
A difference between an input image including images of a background image picked up by an image pick-up unit and an object to be monitored is produced as an image of the object, the image of the object is divided into a plurality of parts and the plurality of divided image of the object are produced as a plurality of templates. Each of the plurality of templates is matched with a new input image and images of a plurality of parts in the new input image which have highest degrees of matching with the plurality of templates are used to update the plurality of templates to output a plurality of new templates. Each of the plurality of new templates is matched with a further new input image and images of a plurality of parts in the further new input image which have highest degrees of matching with the plurality of new templates are used to update the plurality of new templates to output a plurality of further new templates. In this manner, the plurality of templates are sequentially updated for the new input images to trace the object.
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Citations
13 Claims
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1. A video image monitoring method for monitoring an object to be picked up by image pick-up means, comprising:
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a first step for producing a difference between an input image and a background image, in order to obtain the image of said object, said input image including said background image and the image of said object to be monitored from said image pick-up means; a second step for dividing the image of said object into a plurality of parts to produce a plurality of divided images of said object, each of which is a template; a third step for matching each of said templates with a new input image and detecting a plurality of parts of said new input image having highest degrees of matching with said templates; and a fourth step for updating said templates using said parts of said new image having said highest degrees of matching as a plurality of new templates, wherein said fourth step is sequentially executed for new input images to sequentially update said templates to trace said object. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A video image monitoring system comprising:
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a TV camera for picking up an image of at least monitor area; an image input interface for receiving an image signal from said TV camera; processing means including a microprocessor and a memory for processing the image signal from said image input interface; and a display device including a display screen, wherein said processing means comprises; first means for producing a difference between an input image from said TV camera and a background image, said input image including said background image from said TV camera and an image of the object to be monitored, in order to obtain the image of said object, second means for dividing the image of said object into a plurality of parts to produce a plurality of divided images of said object which are a plurality of templates, third means for matching each of said templates with a new input image from said TV camera and detecting a plurality of parts of said new input image having highest degrees of matching with said templates, and fourth means for updating said templates using said parts of said new input image having said highest degrees of matching as a plurality of new templates, wherein said fourth means causes sequential updating of said templates with respect to new input images to conduct tracing of said object. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A video image monitoring method for monitoring an object to be picked up by image pick-up means, comprising:
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a step for producing a difference between a background image and an image of said object to be monitored from an image from said image pick-up means; a step for dividing the image of said object into a plurality of parts to produce a plurality of templates of said object; and a step for matching each of said templates with a new input image and updating said templates into a plurality of new templates which match with said new input image, wherein said steps are sequentially executed for new input images to sequentially update said templates to trace said object.
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Specification