公开(公告)号：US20160080690A1

公开(公告)日：2016-03-17

申请号：US14947176

申请日：2015-11-20

Applicant: AT&T Intellectual Property II, L.P.

Inventor： Andrea BASSO ,  Eric COSATTO ,  David Crawford GIBBON ,  Hans Peter GRAF ,  Shan LIU

IPC: H04N7/14 ,  H04N7/15 ,  G06F3/01 ,  G06T17/00 ,  G06K9/00 ,  G06K9/20

CPC classification number: G06K9/00281 ,  G06F3/012 ,  G06K9/00228 ,  G06K9/2027 ,  G06T7/246 ,  G06T15/50 ,  G06T17/00 ,  G06T2200/08 ,  G06T2207/10152 ,  G06T2207/30201 ,  H04N7/147 ,  H04N7/15

Abstract: A method of improving the lighting conditions of a real scene or video sequence. Digitally generated light is added to a scene for video conferencing over telecommunication networks. A virtual illumination equation takes into account light attenuation, lambertian and specular reflection. An image of an object is captured, a virtual light source illuminates the object within the image. In addition, the object can be the head of the user. The position of the head of the user is dynamically tracked so that an three-dimensional model is generated which is representative of the head of the user. Synthetic light is applied to a position on the model to form an illuminated model.

Abstract translation: 一种改善真实场景或视频序列的照明条件的方法。 数字生成的光被添加到通过电信网络进行视频会议的场景中。 虚拟照明方程考虑了光衰减，朗伯和镜面反射。 捕获对象的图像，虚拟光源照亮图像内的对象。 另外，对象可以是用户的头。 动态跟踪用户头部的位置，从而生成代表用户头部的三维模型。 将合成光应用于模型上的位置以形成照明模型。