Wan-Yen Lo, Jeroen Van Baar, Claude Knaus, Matthias Zwicker, and Markus Gross with an ACM SIGGRAPH Asia 2010 paper and tech demonstration for a system to object copy and paste in stereoscopic 3d images actually taking account depth in the scene.
“With the increase in popularity of stereoscopic 3D imagery for film, TV, and interactive entertainment, an urgent need for editing tools to support stereo content creation has become apparent. In this paper we present an end-to-end system for object copy & paste in a stereoscopic setting to address this need. There is no straightforward extension of 2D copy & paste to support the addition of the third dimension as we show in this paper.”