公开(公告)号：US20190007623A1

公开(公告)日：2019-01-03

申请号：US15640371

申请日：2017-06-30

Applicant: Polycom, Inc.

Inventor： Xiangdong Wang ,  Yibo Liu ,  Jinwei Feng ,  Edmund Thompson ,  Peter Chu

IPC: H04N5/232 ,  G06K9/00 ,  H04N5/247 ,  G06T7/20 ,  H04N7/15

Abstract: A videoconference apparatus and method coordinates a stationary view obtained with a stationary camera to an adjustable view obtained with an adjustable camera. The stationary camera can be a web camera, while the adjustable camera can be a pan-tilt-zoom camera. As the stationary camera obtains video, participants are detected and localized by establishing a static perimeter around a participant in which no motion is detected. Thereafter, if no motion is detected in the perimeter, any personage objects such as head, face, or shoulders which are detected in the region bounded by the perimeter are determined to correspond to the participant.

公开(公告)号：US10003765B2

公开(公告)日：2018-06-19

申请号：US15808685

申请日：2017-11-09

Applicant: Polycom, Inc.

Inventor： Edmund Thompson ,  Yibo Liu

IPC: H04N7/14 ,  H04N5/57 ,  H04N7/15 ,  G06K9/00

CPC classification number: H04N5/57 ,  G06K9/00255 ,  H04N7/152

Abstract: A videoconferencing system includes at least one processor and at least one camera. The endpoint can capture one or more images with the camera. The system can locate a region of interest within an image, such as the area surrounding the face of a person participating in a videoconference. If the face area or other region of interest is too dark, the system can brighten the region to make it more visible. The system can determine whether the face is too dark by comparing the captured image to previously captured images, or comparing the luma values and other data making up the face to predetermined values, or both. The system can check the second image for over-brightening or saturation, and further adjust the image as needed. The brightening of the face area is done in such a way that the brightened region is unobtrusive to the viewer.