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Nonlinear scaling in video conferencing

Inactive Publication Date: 2015-12-17
WILLIAMS HEROLD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes a way to make video calls using two starting images, which are then down-scaled to create transmitted images. The transmitted images have fewer rows of data than the original images. By combining these images, the system achieves better video quality during call transmission.

Problems solved by technology

However, in certain circumstances, it is not possible for all participants of a conference to be co-located within the same conference room.

Method used

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  • Nonlinear scaling in video conferencing
  • Nonlinear scaling in video conferencing
  • Nonlinear scaling in video conferencing

Examples

Experimental program
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Embodiment Construction

[0019]A typical conference room that is set up as a video conferencing endpoint includes a display monitor that is positioned towards a first end of a conference room table. Participants of a video conference sit on either side of the table or otherwise sit around the table so as to face the display. Because the gaze of participants is often directed towards the display, a video camera is typically placed on top of the display so that an image of the faces (or at least the heads) of the participants in the conference room can be captured. The video images captured by the video camera are transmitted to another geographically remote endpoint location for display on a corresponding video screen. If a second video camera is added to a local endpoint (e.g., where a single video camera is insufficient to capture high quality images of all of the participants attending the video conference at the local endpoint) then the complexity of the video conferencing system greatly increases, typic...

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PUM

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Abstract

A method for video teleconferencing is disclosed. The method comprises receiving a first starting image with a first number of rows and receiving a second starting image with a second number of rows. The images are nonlinearly down-scaled to create a first scaled image and second scaled image respectively. Thus the numbers of rows in the scaled images are less than the number of rows in the starting images. Then, the first scaled image is combined with the second scaled image to create a transmission image for transmission.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a bypass continuation of International Application No. PCT / US2014 / 018137, filed Feb. 25, 2014, entitled NONLINEAR SCALING IN VIDEO CONFERENCING, which claims the benefit of U.S. Provisional Patent Application Ser. No. 61 / 768,587, filed Feb. 25, 2013, entitled NONLINEAR SCALING IN VIDEO CONFERENCING, the disclosures of which are hereby incorporated by reference.BACKGROUND[0002]Various aspects of the present disclosure relate generally to teleconferencing and more particularly to compression of video for teleconferencing applications.[0003]Conventional conferences involve locating participants at a common location (e.g., a conference room). However, in certain circumstances, it is not possible for all participants of a conference to be co-located within the same conference room. To address this scenario, video conferencing systems have been developed that take advantage of computer networks to transmit video and audio da...

Claims

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Application Information

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IPC IPC(8): H04N7/15G06T3/40
CPCH04N7/15G06T3/4092G06T2207/30196G06T2200/16G06T2207/10016H04N7/152G06T3/40H04N1/387H04N7/147
Inventor WILLIAMS, HEROLD
Owner WILLIAMS HEROLD