Mosaic construction from image stream with parallax
Man-tai Cheung, R. Chung · 2002
We introduce a framework that is capable of reconstructing a mosaic from an image stream that contains parallax. As a non-planar, non-distant scene is pictured under general camera motion, parallax is present in the image data. Constructing a mosaic from such data is difficult because the global parametric transformation that allows one image to be registered with another is lacking. In an earlier work (see Dornaika, F. and Chung, R., Proc. of 4th Asian Conference on Computer Vision, p.484-89, 2000), one of us proposed to overcome the difficulty by the use of a third image. In this work we extend the three-image mosaicking mechanism for not three images but an image stream that contains parallax. We answer two questions: (1) how an image stream is divided into 3-image sets for the three-image mosaicking mechanism to iterate upon; and (2) how intermediate mosaic results over the various 3-image sets are accumulated to compose the overall mosaic at the most current image frame. Experimental results on real image data are also presented.