We presents a technique for 360 x 360 mosaicing with a very wide field of view fish eye lens. Standard camera calibration is extended for lenses with a field of view bigger than ½ ¼ AE . We demonstrate the calibration on a Nikon FC-E8 fish eye converter, which is an example of a low-cost lens with ½ ¿ AE field of view. We illustrate the use of this lens on one application, the 360 x 360 mosaic which provides ¿ ¼ AE field of view in both vertical and horizontal direction.
Non-central (X-slits) images can be used in image based rendering (IBR) for new view synthesis for a viewer moving in a restricted region. Novel, i.e. previously unseen, views are rendered from virtual camera positions from a set of images captured at some predefined camera positions. The novel views correspond to camera positions not contained in the input image set. For instance, the input sequence consists of images captured on a circular path, but the viewer can move in a disk defined by that path. We investigate a class of non-central images, the omnidirectional X-slits images, which capture environment around the viewer completely. The virtual viewer can rotate his head freely in each position without the need of creating another image for different viewing direction. New images have to be generated only in case of a change in position of the viewer. This approach allows efficient representation of high resolution (and thus space demanding) images for IBR in memory.
We propose a method for visual robot localization using a panoramic image volume as the representation from which we can generate views from virtual viewpoints and match them to the current view. We use a geometric imagebased rendering formalism in combination with a subspace representation of images, which allows us to synthesize views at arbitrary virtual viewpoints from a compact low-dimensional representation.
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