Virtual view image synthesis for eye-contact in TV conversation system
Virtual view image synthesis for eye-contact in TV conversation system
复制标题
电视对话系统中眼神接触的虚拟视点图像合成
DOI：
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复制
发表时间：
2010
期刊：
影响因子：
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通讯作者：
Sakae Saito
中科院分区：
文献类型：
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作者：
D. Murayama;K. Kimura;T. Hosaka;T. Hamamoto;Nao Shibuhisa;Seiichi Tanaka;Shunichi Sato;Sakae Saito
Eye-contact plays an important role for human communications in the sense that it can convey unspoken information. However, it is highly difficult to realize eye-contact in teleconferencing systems because of camera configurations. Conventional methods to overcome this difficulty mainly resorted to space-consuming optical devices such as half mirrors. In this paper, we propose an alternative approach to achieve eye-contact by techniques of arbitrary view image synthesis. In our method, multiple images captured by real cameras are converted to the virtual viewpoint (the center of the display) by homography, and evaluation of matching errors among these projected images provides the depth map and the virtual image. Furthermore, we also propose a simpler version of this method by using a single camera to save the computational costs, in which the only one real image is transformed to the virtual viewpoint based on the hypothesis that the subject is located at a predetermined distance. In this simple implementation, eye regions are separately generated by comparison with pre-captured frontal face images. Experimental results of both the methods show that the synthesized virtual images enable the eye-contact favorably.
