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Patent

Teleconferencing imaging system with automatic camera steering

TLDR
In this article, an automatic voice-directional video camera image steering system for teleconferencing is presented, which automatically selects segmented images from a selected panoramic video scene typically around a conference table so that the participant in the conference currently speaking will be the selected segmented image in the proper viewing aspect ratio, eliminating the need for manual camera movement or automated mechanical camera movement.
Abstract
An automatic, voice-directional video camera image steering system specifically for use for teleconferencing that electronically selects segmented images from a selected panoramic video scene typically around a conference table so that the participant in the conference currently speaking will be the selected segmented image in the proper viewing aspect ratio, eliminating the need for manual camera movement or automated mechanical camera movement. The system includes an audio detection circuit from an array of microphones that can instantaneously determine the direction of a particular speaker and provide directional signals to a video camera and lens system that provides a panoramic display that can electronically select portions of that image and, through warping techniques, remove any distortion from the most significant portions of the image which lie from the horizon up to approximately 30 degrees in a hemispheric viewing area.

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References
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Patent

Image processing system for teleconference system

TL;DR: An image processing system for a teleconference system includes: a camera assembly (1) including a rotary camera (10) and a fixed camera (11) for outputting an image signal; a switching unit (2) operatively connected to the rotary cameras and switching between them; and an image coding unit (5) operating with the control unit (4) and the switching unit(2) for coding the image signal, the image decoding unit(5) further determining a fixed compression rate so as to place primary importance on a movement of the image until the image
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Method and apparatus for hemispheric imaging which emphasizes peripheral content

TL;DR: A system for electronic imaging of a hemispheric field of view includes a camera for receiving optical images of the field-of-view and for producing output data corresponding to the optical images as discussed by the authors.
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Conference video system

TL;DR: In this article, a plurality of conference seats, at each of which is a microphone, are coupled through circuit elements to a servomotor(s) which positions the mirror to focus on the speaker and aims the camera's field of vision toward active audio.
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