Browsing by Author "Aggoun A."
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Item Coherent grouping of pixels for faster shadow cache in 3D holoscopic computer graphics(2010) Aggoun A.; Youssef O.H.; School of Engineering and Design; Brunel University; Uxbridge; UB8 3PH; United Kingdom; Faculty of Computer Sciences; October University for Modern Sciences and Arts; Cairo; EgyptComputer generation of 3D holoscopic imaging requires higher resolution display than normal computer images in order to produce 3D images with acceptable quality. The efficiency of the shadow cache increases as the resolution of the image increases. In order to apply shadow cache to ray tracing of 3D holoscopic images, coherent grouping of pixels that ensures successively tracing of pixels whose primary rays share spatial coherence, is required. That increases the number shadow rays that utilise the shadow cache and save large number of intersection tests. In this paper, the optimum pixel grouping for improving the coherence and the shadow cache in the computer generation of 3D holoscopic content is investigated. Experimental results show, that up to a 13.7% improvement in execution time can be achieved by proper pixel grouping. � 2010 IEEE.Item Computer generated content for 3D TV(2007) Eljdid M.G.; Aggoun A.; Youssef O.H.; School of Engineering and Design; Brunel University; Uxbridge; UB8 3PH; United Kingdom; Faculty of Computer Sciences; October University for Modern Sciences and Arts; Cairo; EgyptMixed content is a primary feature of current TV program making and consequently real-time computer generated video in autostereoscopic format is important if 3D TV is going to make an impact. In this paper, an approach for computer generating 3D integral imaging frames is proposed. The method is based on a 3D integral imaging ray-tracer containing 3D integral imaging parser, 3D camera model, and a 3D integral imaging renderer.