Advances in Multimedia / 2008 / Article / Fig 4

Research Article

Morphable 3D-Mosaics: A Hybrid Framework for Photorealistic Walkthroughs of Large Natural Environments

Figure 4

When seeking a correspondence for a pixel p of image k, we reproject that pixel onto image k+1 (using the approximate geometry of the local models and their relative pose) and then restrict our search only in a small region SEARCHp around the reprojection point. Furthermore, to take scale differences into account, we search not only inside region SEARCHp of image k+1, but also inside the projection of SEARCHp onto the images k+1s, which are rescaled versions of image k+1, that is, we search not only for a corresponding pixel, but also for a scale estimate. In fact, all the possible pixel-scale combinations will form the candidate labels of pixel p and to choose the best one of them, we will use an MRF optimization procedure.

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