40 results about "Visual surveillance" patented technology

An audio / visual surveillance system for use in mobile vehicles such as patrol cars includes two video cameras producing video signals and four audio sources producing audio signals. The signals are MPEG-2 compressed and streamed in real time with geographic and time data to a digital cartridge-type tape recorder located in the vehicle. A full patrol car shift is recorded on a single tape and, at the end of the shift, the tape is placed in a master sled bay. An MD5 hash authenticates the data for court use. Up to four videos can be synchronized frame-by-frame for simultaneous monitoring. An MPEG-1 stream is sent via wireless to headquarters in real time. One camera captures data external to the vehicle, while the other captures data internal to the vehicle. One audio source captures audio inside the vehicle and another captures dispatcher communications. The other two audio sources are carried by officers.

Techniques for performing visual surveillance of one or more moving objects are provided. The techniques include registering one or more images captured by one or more cameras, wherein registering the one or more images comprises region-based registration of the one or more images in two or more adjacent frames, performing motion segmentation of the one or more images to detect one or more moving objects and one or more background regions in the one or more images, and tracking the one or more moving objects to facilitate visual surveillance of the one or more moving objects.

A simplified general model and an associated estimation algorithm is provided for modeling visual data such as a video sequence. Specifically, images or frames in a video sequence are represented as collections of flat moving objects that change their appearance and shape over time, and can occlude each other over time. A statistical generative model is defined for generating such visual data where parameters such as appearance bit maps and noise, shape bit-maps and variability in shape, etc., are known. Further, when unknown, these parameters are estimated from visual data without prior pre-processing by using a maximization algorithm. By parameter estimation and inference in the model, visual data is segmented into components which facilitates sophisticated applications in video or image editing, such as, for example, object removal or insertion, tracking and visual surveillance, video browsing, photo organization, video compositing, etc.

Novel vision monitoring and diagnostic testing tools and help-seeking enablers that may be used individually or in combination as vision monitoring and diagnostic testing systems that improve patients' ability to recognize onset and progression of visual changes over time, so that the identification of acute or chronic visual conditions may be improved and accelerated, which drives earlier help-seeking behavior by the patient, which enables earlier clinical diagnosis by an eye care specialist and therefore earlier treatment and therefore reduced likelihood of severe vision loss.

A method and apparatus for detecting an object using a perspective plane are disclosed. The method includes determining a perspective plane for a background scene, and determining a moving object within the background scene based upon the determined perspective plane. By using a visual surveillance device and an apparatus for detecting objects, the method and apparatus for detecting an object using a perspective plane is capable of efficiently detecting objects and tracking the movements of the corresponding objects.

An audio / visual surveillance system for use in mobile vehicles such as patrol cars includes two video cameras producing video signals and four audio sources producing audio signals. The signals are MPEG-2 compressed and streamed in real time with geographic and time data to a digital cartridge-type tape recorder located in the vehicle. A full patrol car shift is recorded on a single tape and, at the end of the shift, the tape is placed in a master sled bay. An MD5 hash authenticates the data for court use. Up to four videos can be synchronized frame-by-frame for simultaneous monitoring. An MPEG-1 stream is sent via wireless to headquarters in real time. One camera captures data external to the vehicle, while the other captures data internal to the vehicle. One audio source captures audio inside the vehicle and another captures dispatcher communications. The other two audio sources are carried by officers.

A method for operating a surveillance system includes performing a first portion of an automated visual surveillance tour of a predetermined control area by inducing movement of at least one visual surveillance camera at a first camera tour speed. The method also includes recording at least one first video image frame of the predetermined control area. The method further includes recording at least one second video image frame of the predetermined control area. The method also includes automatically determining whether a region of interest exists within the predetermined control area. The method further includes performing a second portion of the automated visual surveillance tour by shifting the induced movement of the at least one visual surveillance camera to a second camera tour speed. The method also includes automatically dwelling on the region of interest.

The invention discloses a method for identifying sex based on walking, comprising two processes of training and identification. The walking video sequence marked with sex has characteristics picked up, and the characteristics picked up are trained for modeling so as to obtain sex classification model parameters; video data or camera data containing a walker have characteristics picked up, and thecharacteristics picked up are inputted in the model obtained by training so as to obtain the sex of the walker in the video. The sex identification based on walking is very important to improve the capability of the next generation intelligent monitoring control system in understanding monitoring scenes. When the invention is used for the intelligent vision monitoring control system, the inventioncan help the monitoring control system identify sexes of people in monitoring scenes, make the monitoring control system really understand what's going on in monitoring scenes and apply different safety levels according to different sexes of people in monitoring scenes; when the invention is used for the rough classification of people based on the walking identification, sexes of people can be judged, and the identification of a walker can be searched based on sex; the invention can also be used to analyze whether a customer is fond of specific products or specific entertainments.

A method for estimating the activity topology of a set of sensed data windows is described. Each of the sensed data windows related to a corresponding sensed region. The method includes the steps of determining a subset of sensed data windows that are not connected through comparing sensed data windows pair wise from the set of sensed data windows, wherein the step of comparing sensed data windows pair wise includes determining whether a pair of sensed data windows does not have overlapping sensed regions: determining a first occupancy measure for a first sensed data window and a second occupancy measure for a second sensed data window, the first and second sensed data windows comprising the pair of sensed data windows, and comparing the first and second occupancy measures so as to determine that the associated first and second sensed data windows do not overlap; and excluding the subset of sensed data windows from the set of sensed data windows. In one embodiment, the sensed data windows corresponding to image windows such as would be provided by a visual surveillance system.

The invention discloses a device and method for searching for and positioning multiple moving objects on the basis of bird visual features. In the perspective of bionics, bionic design is carried out by combining visual features of animals in the prey relation and double-concave structure features of birds. The device is composed of a horizontally installed round base, four identical two-degree-of-freedom monocular mechanisms evenly distributed along a circle, a fixed camera part installed in the middle of the base, a corresponding computer, a circuit part and the like. The device integrates the characteristics that preyed animals are wide in vision and vision of the two eyes of prey animals is advanced, can achieve quick search and accurate positioning of the moving objects in the panoramic range at the same time, and is applicable to application and popularization of the visual surveillance field in engineering practices.

An active audio-visual system and method for identifying events occurring at a location-of-interest is provided. In particular, a system that comprises a Fisheye image capturing device, an audio module and a computing module communicatively coupled to both the image capturing device and the audio module whereby all the modules and devices are provided at the location-of-interest is provided. In operation, the audio module is configured to issue a notification to the computing module when an audio event is detected at the location-of-interest. The notification, which will contain a point of origin of the audio event, will then be used by the computing module to cause the calibrated Fisheye image capturing device to provide a captured high-resolution perspective image of the point of origin of the audio signal to an event identification module for further processing.