Method and System to Characterize Video Background Changes as Abandoned or Removed Objects
First Claim
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1. A method for analyzing video data in a security system, the method comprising:
- comparing a background model to at least one frame of the video data to identify at least one patch of changed pixels between the background model and the at least one frame;
generating masks based on the at least one patch of changed pixels that define contours around the at least one patch of changed pixels; and
applying the masks to the background model and the at least one frame and calculating similarity scores based on the masks to determine whether the at least one patch of changed pixels is characteristic of an abandoned object or a removed object.
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Abstract
A method and system for analyzing video data in a security system. An analysis compares a current frame to a background model. The analysis system compares the background model to the current frame to identify changed pixel patches. The analysis system uses morphological image processing to generate masks based on the changed pixel patches. Next, the analysis system applies the masks to the background model and the current frames to determine whether the changed pixel patches are characteristic of abandoned or removed objects within the video data.
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20 Claims
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1. A method for analyzing video data in a security system, the method comprising:
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comparing a background model to at least one frame of the video data to identify at least one patch of changed pixels between the background model and the at least one frame; generating masks based on the at least one patch of changed pixels that define contours around the at least one patch of changed pixels; and applying the masks to the background model and the at least one frame and calculating similarity scores based on the masks to determine whether the at least one patch of changed pixels is characteristic of an abandoned object or a removed object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A security system comprising:
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video cameras to capture video data; a video recorder to store the captured video data; an analysis system that analyzes the video data of the security system; and wherein the analysis system compares a background model to at least one frame of the video data to identify at least one patch of changed pixels between the background model and the at least one frames, generates masks based on the at least one patch of changed pixels ,which define contours around the at least one patch of changed pixels, applies the masks to the background model and the at least one frame, calculates similarity scores based on the masks, and determines whether the at least one patch of changed pixels is characteristic of abandoned objects or removed objects. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification