System and method for process segmentation using motion detection
First Claim
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1. A method for analyzing process flow, comprising:
- determining physical areas affected by the process flow;
generating a video recording using least one video camera having a field of view covering said physical area;
designating at least one region of interest (ROI) in the field of view of said video recording;
determining a background image in said ROI;
segmenting said video recording into process segment sessions by detecting motion in said ROI, each of said segments beginning upon detection of motion and ending upon cessation of motion.
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Abstract
Video recording technology is utilized to enable business process investigation in an unobtrusive manner. Several cameras are situated, each having a defined field of view. For each camera, a region of interest (ROI) within the field of view is defined, and a background image is determined for each ROI. Motion within the ROI is detected by comparing each frame to the background image. The video recording can then be segmented and indexed according to the motion detection.
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Citations
26 Claims
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1. A method for analyzing process flow, comprising:
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determining physical areas affected by the process flow; generating a video recording using least one video camera having a field of view covering said physical area; designating at least one region of interest (ROI) in the field of view of said video recording; determining a background image in said ROI; segmenting said video recording into process segment sessions by detecting motion in said ROI, each of said segments beginning upon detection of motion and ending upon cessation of motion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A system for investigating business process, comprising:
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a video monitor; a processor coupled to the monitor; a plurality of cameras connected to said processor, each camera having a field of view; a video driver controlled by said processor to receive video signals from said cameras and display video images on the monitor; a user interface for defining a region of interest in an image displayed on said monitor; a memory storing a background image defined within said region of interest; wherein said processor detects motion in said video signals by comparing frames of said video signals to said background image. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A method for detecting a motion in a video stream, comprising:
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obtaining a video stream; applying sum of absolute difference (SAD) analyses to the video stream to obtain SAD results; applying Lucas-Kanade Optical Flow (LKF) analyses to the video stream to obtain LKF results; applying Normalized Correlation (NC) analyses to the video stream to obtain NC results; and
,combining the SAD results, the LKF results, and the NC results to obtain motion detection. - View Dependent Claims (26)
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Specification