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实时面部动画计算机论文

时间:2015-09-29 21:20来源:www.ukthesis.org 作者:英国论文网 点击联系客服: 客服:Damien
相对低成本的实时面部动画
 
在人与人的交流中,面部表情扮演着主要角色。在这个现代世界,计算机网络和互联网的潜力得到了显著的改善,这些设施可以通过参与双方在会议结束时的实时面部动画来实现在电话会议中面部表情的传递。新的MPEG-4标准已经能够识别到这种设施,这类方法确实可以克服传统视频会议技术的缺点。许多原型系统已经开发了这个实时面部动画技术,在那里虚拟人物的动画细节被发送到整个网络。我们将看到其中一个由南非开普顿大学开发的原型。他们声称,他们的系统使用执行驱动方法,其中的面部特征追踪加入了标记以辅助。他们已经演示了这项运用廉价摄像机和普通个人电脑构成的创新技术,表明了这种技术是可行的且削减了在达到实时动画过程中的技术成本。
 
I.简介
 
面部表情是人与人交流的重要组成部分。它使得我们能够表达情感,并通过展示我们观察和意图的性质和程度,为我们的演讲提供一个语境。随着计算机网络和互联网的发展,通信和相互交流拥有了很大的可能性,这为传统的面对面互动做了至关重要的准备工作。 这可以根据会话参与者的反应直接驱动面部动画的方式来完成。为参与者提供面部表情应该发展现实的互动,鼓励更多地投入情感以及增加虚拟的存在感。传统的视频会议要求很大的带宽,在协同能力方面也有限制,这就造成了它的瓶颈。使用虚拟字符进行通信的优点是:
 
Relatively Low Cost Real Time Facial Animation Computer Science Essay
 
In human to human communication, facial expressions play a major role. In this modern world the potential of computer networks and Internet are significantly improved and these facilities can be utilised to convey the facial expressions as well in a tele-conference for instance. This can be done by real-time facial animation of the participants in both the end of the conference. The new MPEG 4 standard has recognized this facility and these kinds of approaches can definitely overcome the short comings of the traditional video conferencing techniques. Many prototype systems have been developed on this real-time facial animation where the animation details to the virtual characters are sent across the network. We are going to see one of these prototypes developed by the University of Cape Town in South Africa. They claim that their system uses a performer driver approach, where the facial feature tracking is aided with markers. They have demonstrated this innovative technology using cheap video cameras and ordinary personal computers. This shows that this approach is feasible and cost cutting technique in achieving a real time animation.(责任编辑:charlie)


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