Browse Prior Art Database

Method and system for controlling far end camera Disclosure Number: IPCOM000244281D
Publication Date: 2015-Nov-30
Document File: 2 page(s) / 41K

Publishing Venue

The Prior Art Database


This article describes the method that allows controlling far end camera in video conferencing systems. The idea is based on using a wide angle camera that captures the entire scene. The resulting video stream is then cropped and sent to the remote party that can control which part of the scene to crop. Effectively this allows remote party to pan, zoom and tilt the camera.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

Page 01 of 2

Method and system for controlling far end camera

During a video conference it is desirable to control the movement, rotation and zoom factor of the far end camera. This is especially relevant for video conferences using mobile devices as the person you are talking to may easily tilt the device aside or rotate it.

The idea is to use a wide angle camera. The image that the camera captures is cropped and send to the remote party. The remote party can choose what part of the image to crop. This allows to "control" the the movement, rotation and zoom of the far end camera.

Let's have a look at the following scenario. Video conference between A and B using mobile device.

1. The image that is received by A from B's camera is the following:

2. This is the actual image that is captured by the camera:

A gives a command to move left and rotate counterclockwise. This can be done by using mobile device sensors. The commands are sent to B.

3. As a result the image is cropped as follows:


Page 02 of 2

4. And A gets the following image:

This is implemented in expensive stationary video conferencing systems, but in most cases the camera cannot be controlled. In case of mobile video conference, it is difficult to control the hand of your party.