Face swapping : automatic face replacement in photographs

http://www1.cs.columbia.edu/CAVE/projects/face_replace/video/SIGGRAPH2008.wmv

Advances in digital photography have made it possible to capture large collections of high-resolution images and share them on the internet. While the size and availability of these collections is leading to many exciting new applications, it is also creating new problems. One of the most important of these problems is privacy. Online systems such as Google Street View allow users to interactively navigate through panoramic images of public places created using thousands of photographs. We believe that an attractive solution to the privacy problem is to remove the identities of people in photographs by automatically replacing their faces with ones from a collection of stock images.

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