A camera used in video communication over Internet is usually placed on top of a monitor, therefore it is hard for an user to make a natural eye contact with the peer communicator since the user gazes at the monitor, not the camera lens. In this paper, we propose a single 3D mesh warping technique for gaze-correction. It performs 3D rotation of face image by a certain correction angle to obtain a gaze-corrected image. The correction angle is estimated in an unsupervised way by using invariant face feature, and a very simple face section model is used in 3D rotation instead of precise, but not easily attainable in most cases, 3D face models. The method is computationally simple enough to implement for real-time casual video communication applications.
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