US 8,570,357 B2 · Systems and methods for reducing video crosstalk

Abstract

Methods and systems that reduce video crosstalk in video streams sent between participants in a video conference are disclosed. In one aspect, a method for reducing video crosstalk in a video stream sent from a local site to a remote site includes projecting a video stream of the remote site onto a screen at the local site. Each image in the video stream is dimmed according to a dimming factor of a dimming sequence. Crosstalk images of the local site are captured through the screen. Each crosstalk image is a blending of the image of the local site captured through the screen with a dimmed image of the remote site projected onto the screen. Images of the local site with reduced crosstalk are computed based on the dimming sequence. A video stream composed of the images of the local site with reduced crosstalk are sent to the remote site.

Claims20

Dependent claims

A method for reducing video crosstalk in a video stream sent from a local site to a remote site, the method comprising:

projecting a video stream of images of the remote site onto a screen at the local site, wherein the projecting comprises dimming sequential ones of the images in the video stream in accordance with a predetermined dimming sequence of at least one dimming factor;
capturing crosstalk images of the local site through the screen using a camera, each crosstalk image is an image of illumination from the local site captured through the screen and illumination from a respective one of the projected images of the remote site;
computing images of the local site with reduced crosstalk based on the dimming sequence using a computing device;
and
sending a video stream composed of the images of the local site with reduced crosstalk to the remote site.

2 more elements

A non-transitory computer-readable medium having instructions encoded thereon for reducing video crosstalk in a video stream sent from a local site to a remote site, the instructions enabling one or more processors to perform the operations of:

projecting a video stream of images of the remote site onto a screen at the local site, wherein the projecting comprises dimming sequential ones of the images in the video stream in accordance with a predetermined dimming sequence of at least one dimming factor;
capturing crosstalk images of the local site through the screen using a camera, each crosstalk image is an image of illumination from the local site captured through the screen and illumination from a respective one of the projected images of the remote site;
computing images of the local site with reduced crosstalk based on the dimming sequence;
and
sending a video stream composed of the images of the local site with reduced crosstalk to the remote site over a network.

2 more elements

Dependencies are inferred from the claim text.

Systems and methods for reducing video crosstalk

Life of this patent

Systems and methods for reducing video crosstalk

Life of this patent

Abstract

Claims20