Plantronics, Inc.

Hp (chongqing) Co., Ltd

Hewlett-packard Development Company, L.p.

Hailin Song

Xi Lu

Hai Jun Xu

Yongkang Fan

Wenxue He

Tianran Wang

Hai Xu

Fangpo Xu

A method may include identifying primly camera speaker coordinates of a location of a speaker relative to a primary camera, converting the primary camera speaker coordinates to secondary camera speaker coordinates, the secondary camera speaker coordinates being of the location and relative to a secondary camera, and adjusting, using the secondary camera speaker coordinates of the secondary camera, a view setting of the secondary camera to track the location of the speaker.

Tracking with multiple cameras

Systems and methods are provided for identifying and displaying whiteboard text and/or an active speaker in a video-based presentation, e.g., a video conference. Video images of an environment including a whiteboard may be captured by a video camera system. The video images may be analyzed to detect at least one text-containing area in the environment. Each text-containing area may be analyzed to determine whether it is an area of a whiteboard. When a text-containing area is identified as a whiteboard area, an area of view including the text-containing whiteboard area may be selected for display, e.g., a subset of the full frame captured by the video system. A video feed from the video camera system may be controlled to display the selected area of view at a client device, to provide a useful view of the whiteboard text and/or a speaking person located near the whiteboard text.

Systems and methods for detection and display of whiteboard text and/or an active speaker

A method includes receiving, at a conference endpoint, video captured using a wide angle lens. The method further includes selecting a view region in a frame of the video. The method further includes selectively applying, based on a size of the view region, deformation correction or distortion correction to the view region to generate a corrected video frame. The method further includes transmitting the corrected video frame to a remote endpoint.

Selective distortion or deformation correction in images from a camera with a wide angle lens

A method () for operating cameras () in a cascaded network (), comprising: capturing a first view () with a first lens () having a first focal point () and a first centroid (), the first view () depicting a subject (); capturing a second view () with a second lens () having a second focal point () and a second centroid (); detecting a first location of the subject (), relative the first lens (), wherein detecting the first location of the subject (), relative the first lens (), is based on audio captured by a plurality of microphones (); estimating a second location of the subject (), relative the second lens (), based on the first location of the subject () relative the first lens (); selecting a portion () of the second view () as depicting the subject () based on the estimate of the second location of the subject () relative the second lens ().

Optimal view selection in a teleconferencing system with cascaded cameras

A method of tracking a presenter during a videoconference, comprising: detecting, in a data stream, data indicating a presence of one or more persons at a videoconferencing endpoint, the data stream comprising a plurality of frames; detecting tracker initiation data (e.g., that a person is actively talking, or that a person has raised their hand, or both) in the data stream; determining a subject of interest responsive to the tracker initiation data, and tracking the subject of interest as they move while making a presentation.

Tracker activation and deactivation in a videoconferencing system

A videoconferencing device at an endpoint determines whether a person is a real person standing in front of a display device or if the person is instead an image rendered by a display device. In the first instance the real person will be included in a video feed for transmission to a remote endpoint. In the second instance, images of the display device on which the person is rendered will not be included in the video feed.

Differentiating a rendered conference participant from a genuine conference participant

A method for tracking movement of a presenter during a videoconference comprises tracking the location of subject of interest; quickly detecting error conditions&#x2014;such as can occur when a subject of interest moves too quickly or when a subject of interest walks past another person&#x2014;and quickly reinitiating the tracking sequence to help ensure a positive videoconferencing experience.

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Beijing, China

Hailin Song