公开(公告)号：US06980697B1

公开(公告)日：2005-12-27

申请号：US10057063

申请日：2002-01-25

Applicant: Andrea Basso ,  Eric Cosatto ,  David Crawford Gibbon ,  Hans Peter Graf ,  Shan Liu

Inventor： Andrea Basso ,  Eric Cosatto ,  David Crawford Gibbon ,  Hans Peter Graf ,  Shan Liu

IPC: G06K9/40

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。

公开(公告)号：US6112177A

公开(公告)日：2000-08-29

申请号：US965702

申请日：1997-11-07

Applicant: Eric Cosatto ,  Hans Peter Graf ,  Juergen Schroeter

Inventor： Eric Cosatto ,  Hans Peter Graf ,  Juergen Schroeter

IPC: G10L13/04 ,  G10L21/00 ,  G10L21/06 ,  G10L3/00

CPC classification number: G10L13/00 ,  G10L2021/105

Abstract: A method for generating animated sequences of talking heads in text-to-speech applications wherein a processor samples a plurality of frames comprising image samples. Representative parameters are extracted from the image samples and stored in an animation library. The processor also samples a plurality of multiphones comprising images together with their associated sounds. The processor extracts parameters from these images comprising data characterizing mouth shapes, maps, rules, or equations, and stores the resulting parameters and sound information in a coarticulation library. The animated sequence begins with the processor considering an input phoneme sequence, recalling from the coarticulation library parameters associated with that sequence, and selecting appropriate image samples from the animation library based on that sequence. The image samples are concatenated together, and the corresponding sound is output, to form the animated synthesis.

公开(公告)号：US5995119A

公开(公告)日：1999-11-30

申请号：US869531

申请日：1997-06-06

Applicant: Eric Cosatto ,  Hans Peter Graf

Inventor： Eric Cosatto ,  Hans Peter Graf

IPC: G06T13/40 ,  G06F3/14

CPC classification number: G06T13/40

Abstract: A method for generating photo-realistic characters wherein one or more pictures of an individual are decomposed into a plurality of parameterized facial parts. The facial parts are stored in memory. To create animated frames, the individual facial parts are recalled from memory in a defined manner and overlaid onto a base face to form a whole face, which, in turn, may be overlaid onto a background image to form an animated frame.

Abstract translation: 一种用于产生其中一个或多个个人图片被分解为多个参数化面部部分的照片真实人物的方法。 面部部分存储在内存中。 为了创建动画框架，各个面部部分以定义的方式从存储器中回忆并覆盖在基面上以形成整个面部，这又可以覆盖在背景图像上以形成动画框架。