Method for monitoring a moving object and system regarding same
First Claim
1. A method for use in monitoring a search area, the method comprising:
- providing frames of image data representative of a search area, the image data comprising pixel value data for a plurality of pixels;
providing a plurality of time varying distributions for each pixel based on the pixel value data;
providing at least one frame of update image data representative of the search area in an update cycle, the frame of image data comprising update pixel value data for each of the plurality of pixels; and
attempting to match the update pixel value data for each pixel to each of all of the plurality of time varying distributions provided for the pixel;
updating the plurality of time varying distributions for each pixel based on whether the update pixel value data matches one of the plurality of time varying distributions provided for the pixel; and
ordering the updated plurality of time varying distributions for each pixel based on a probability of the time varying distributions thereof being representative of background or foreground information in the search area for use in determining whether the pixel is to be considered background or foreground information.
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Abstract
A method and system for use in monitoring a search area includes the provision of a plurality of time varying distributions for each pixel of image data representative of a search area. The plurality of time varying distributions for each pixel are ordered based on a probability of the time varying distribution being representative of background or foreground information in the search area. For each pixel, an attempt to match update pixel value data to each of all of the plurality of time varying distributions provided for the corresponding pixel is performed to determine if the update pixel value data is representative of background or foreground information in the search area.
175 Citations
26 Claims
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1. A method for use in monitoring a search area, the method comprising:
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providing frames of image data representative of a search area, the image data comprising pixel value data for a plurality of pixels;
providing a plurality of time varying distributions for each pixel based on the pixel value data;
providing at least one frame of update image data representative of the search area in an update cycle, the frame of image data comprising update pixel value data for each of the plurality of pixels; and
attempting to match the update pixel value data for each pixel to each of all of the plurality of time varying distributions provided for the pixel;
updating the plurality of time varying distributions for each pixel based on whether the update pixel value data matches one of the plurality of time varying distributions provided for the pixel; and
ordering the updated plurality of time varying distributions for each pixel based on a probability of the time varying distributions thereof being representative of background or foreground information in the search area for use in determining whether the pixel is to be considered background or foreground information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system for use in monitoring a search area, the system comprising:
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one or more imaging devices operable to provide frames of image data representative of the search area, the image data comprising pixel value data for a plurality of pixels, wherein the frames of image data comprise at least one frame of update image data representative of the search area in an update cycle, the frame of update image data comprising update pixel value data for each of the plurality of pixels; and
a computer apparatus operable to;
attempt to match the update pixel value data for each pixel to each of all of the plurality of time varying distributions provided for the pixel;
update the plurality of time varying distributions for each pixel based on whether the update pixel value data matches one of the plurality of time varying distributions provided for the pixel; and
order the updated plurality of time varying distributions for each pixel based on a probability of the time varying distributions thereof being representative of background or foreground information in the search area for use in determining whether the pixel is to be considered background or foreground information. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification