Abstract: Receive, by a price calculation microservice, tenant user input from a particular tenant of a multi-tenant system. Generate, by the price calculation microservice, a particular charge model based on the tenant user input. Detect, by a usage microservice, a usage event associated with a customer of the particular tenant of the multi-tenant system. Receive, by a rating microservice, a rating request, the rating request being received in response to the detecting the usage event. Calculate, by the price calculation microservice in response to the receiving the rating request, a usage charge for the usage event based on the particular charge model. Store, by the rating microservice, the usage charge. Generate an invoice based on the usage charge stored by the rating microservice. Provide the invoice to the customer of the particular tenant of the multi-tenant system.

Abstract: Receive, by a price calculation microservice, tenant user input from a particular tenant of a multi-tenant system. Generate, by the price calculation microservice, a particular charge model based on the tenant user input. Detect, by a usage microservice, a usage event associated with a customer of the particular tenant of the multi-tenant system. Receive, by a rating microservice, a rating request, the rating request being received in response to the detecting the usage event. Calculate, by the price calculation microservice in response to the receiving the rating request, a usage charge for the usage event based on the particular charge model. Store, by the rating microservice, the usage charge. Generate an invoice based on the usage charge stored by the rating microservice. Provide the invoice to the customer of the particular tenant of the multi-tenant system.

Abstract: Receive, by a price calculation microservice, tenant user input from a particular tenant of a multi-tenant system. Generate, by the price calculation microservice, a particular charge model based on the tenant user input. Detect, by a usage microservice, a usage event associated with a customer of the particular tenant of the multi-tenant system. Receive, by a rating microservice, a rating request, the rating request being received in response to the detecting the usage event. Calculate, by the price calculation microservice in response to the receiving the rating request, a usage charge for the usage event based on the particular charge model. Store, by the rating microservice, the usage charge. Generate an invoice based on the usage charge stored by the rating microservice. Provide the invoice to the customer of the particular tenant of the multi-tenant system.

Abstract: A system and method for performing foreground/background separation on an input image. The method identifies a corresponding model visual element in a scene model associated with the input image, the model visual element being associated with a set of element models, each element model including a plurality of visual data sets. Select an element model from the set of element models, dependent upon a visual distance between the input visual element and a visual data set of the selected element model satisfying a predetermined criterion. The method classifies the input visual element as one of foreground and background, dependent upon the selected element model, and then updates each visual data set in the selected element model, dependent upon the input visual element and at least first and second different methods of updating a visual data set.

Abstract: A method of tracking an object in a plurality of image frames includes receiving an initial contour associated with the edge object in a first one of the image frames. A plurality of first measurement points distributed non-uniformly along the initial contour are determined. The first measurement points are biased to relatively high information portions of the initial contour. A set of subsequent contours are estimated from the initial contour in a second image frame. An identical plurality of second measurement points are determined along each of the set of estimated subsequent contours in the second image frame using the same non-uniform distribution of the first measurement points in the first image frame. The method selects at least one contour of the set of estimated subsequent contours using a confidence measure determined from the second measurement points as distributed along the selected subsequent contour.

Abstract: A method of determining a contour segment for an object in an image captured by a camera is disclosed. A plurality of corner points located on a part of an object in the image is determined. Pairs of corner points are selected from the determined corner points. A path for at least one of the pairs of corner points is determined, the path connecting the corner points of the at least one pair of corner points along the boundary of the object. The contour segment is determined for the object using the determined path.

Abstract: A method of tracking an object in a plurality of image frames includes receiving an initial contour associated with the edge object in a first one of the image frames. A plurality of first measurement points distributed non-uniformly along the initial contour are determined. The first measurement points are biased to relatively high information portions of the initial contour. A set of subsequent contours are estimated from the initial contour in a second image frame. An identical plurality of second measurement points are determined along each of the set of estimated subsequent contours in the second image frame using the same non-uniform distribution of the first measurement points in the first image frame. The method selects at least one contour of the set of estimated subsequent contours using a confidence measure determined from the second measurement points as distributed along the selected subsequent contour.

Abstract: A method of determining a contour segment for an object in an image captured by a camera is disclosed. A plurality of corner points located on a part of an object in the image is determined. Pairs of corner points are selected from the determined corner points. A path for at least one of the pairs of corner points is determined, the path connecting the corner points of the at least one pair of corner points along the boundary of the object. The contour segment is determined for the object using the determined path.

Abstract: A method of performing a zoom operation on a camera is disclosed, wherein, one or more regions of interest within a captured image of a scene are determined. Camera motion direction towards one of the regions of interest is determined. A target region of interest is determined based on the determined camera motion direction. The zoom operation is performed to the target region of interest.

Abstract: Disclosed herein are a system and method for detecting tampering of a first camera in a camera network system, wherein the first camera is adapted to capture a portion of a scene in a field of view of the first camera. The method detects an occlusion of the scene in the field of view of the first camera and changes a field of view of a second camera to overlap with the field of view of the first camera. The method determines a difference between an image captured by the second camera of the changed field of view and a set of reference images relating to the field of view of the first camera. The method then detects tampering of the first camera based on the difference exceeding a predefined threshold.

Abstract: A system and method for performing foreground/background separation on an input image. The method identifies a corresponding model visual element in a scene model associated with the input image, the model visual element being associated with a set of element models, each element model including a plurality of visual data sets. Select an element model from the set of element models, dependent upon a visual distance between the input visual element and a visual data set of the selected element model satisfying a predetermined criterion. The method classifies the input visual element as one of foreground and background, dependent upon the selected element model, and then updates each visual data set in the selected element model, dependent upon the input visual element and at least first and second different methods of updating a visual data set.

Abstract: A method (400) of displaying video data using a video recording system (100). The method (400) records a first stream of video data captured by a first camera (e.g., 103) and a first event associated with the first camera (103). The method records a second stream of video data captured by a second camera (e.g., 104) and a second event associated with the second camera (104). A playback speed is determined based at least on a difference between a current play time position and a time position of a nearest one of the first event and the second event. The first stream and the second stream of video data are displayed in a synchronized manner. The first stream of video data and the second stream of video data are displayed at the playback speed.

Abstract: A method of performing a zoom operation on a camera is disclosed, wherein, one or more regions of interest within a captured image of a scene are determined. Camera motion direction towards one of the regions of interest is determined. A target region of interest is determined based on the determined camera motion direction. The zoom operation is performed to the target region of interest.

Abstract: A method (400) of displaying video data using a video recording system (100). The method (400) records a first stream of video data captured by a first camera (e.g., 103) and a first event associated with the first camera (103). The method records a second stream of video data captured by a second camera (e.g., 104) and a second event associated with the second camera (104). A playback speed is determined based at least on a difference between a current play time position and a time position of a nearest one of the first event and the second event. The first stream and the second stream of video data are displayed in a synchronised manner. The first stream of video data and the second stream of video data are displayed at the playback speed.