Showing papers by "Paul Debevec published in 1996"

Modeling and rendering architecture from photographs: a hybrid geometry- and image-based approach

Abstract: We present a new approach for modeling and rendering existing architectural scenes from a sparse set of still photographs. Our modeling approach, which combines both geometry-based and imagebased techniques, has two components. The first component is a photogrammetricmodeling method which facilitates the recovery of the basic geometry of the photographed scene. Our photogrammetric modeling approach is effective, convenient, and robust because it exploits the constraints that are characteristic of architectural scenes. The second component is a model-based stereo algorithm, which recovers how the real scene deviates from the basic model. By making use of the model, our stereo technique robustly recovers accurate depth from widely-spaced image pairs. Consequently, our approach can model large architectural environments with far fewer photographs than current image-based modeling approaches. For producing renderings, we present view-dependent texture mapping, a method of compositing multiple views of a scene that better simulates geometric detail on basic models. Our approach can be used to recover models for use in either geometry-based or image-based rendering systems. We present results that demonstrate our approach’s ability to create realistic renderings of architectural scenes from viewpoints far from the original photographs. CR Descriptors: I.2.10 [Artificial Intelligence]: Vision and Scene Understanding Modeling and recovery of physical attributes; I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism Color, shading, shadowing, and texture I.4.8 [Image Processing]: Scene Analysis Stereo; J.6 [Computer-Aided Engineering]: Computer-aided design (CAD).

Modeling and Rendering Architecture from Photographs

Abstract: Imagine visiting your favorite place, taking a few pictures, and then turning those pictures into a photorealisic three-dimensional computer model The work presented in this thesis combines techniques from computer vision and computer graphics to make this possible The applications range from architectural planning and archaeological reconstructions to virtual environments and cinematic special effects This thesis presents an approach for modeling and rendering existing architectural scenes from sparse sets of still photographs The modeling approach, which combines both geometry-based and image-based techniques, has two components The first component is an interactive photogrammetric modeling method which facilitates the recovery of the basic geometry of the photographed scene The photogrammetric modeling approach is effective, convenient, and robust because it exploits the constraints that are characteristic of architectural scenes The second component is a model-based stereo algorithm, which recovers how the real scene deviates from the basic model By making use of the model, this new technique robustly recovers accurate depth from widely-spaced image pairs Consequently, this approach can model large architectural environments with far fewer photographs than current image-based modeling approaches For producing renderings, this thesis presents view-dependent texture mapping, a method of compositing multiple views of a scene that better simulates geometric detail on basic models This approach can be used to recover models for use in either geometry-based or image-based rendering systems This work presents results that demonstrate the approach's ability to create realistic renderings of architectural scenes from viewpoints far from the original photographs This thesis concludes with a presentation of how these modeling and rendering techniques were used to create the interactive art installation Rouen Revisited, presented at the SIGGRAPH '96 art show

Reconstructing Polyhedral Models of Architectural Scenes from Photographs

Abstract: This paper presents a new image-based modeling method that facilitates the recovery of accurate polyhedral models of architectural scenes The method is particularly effective because it exploits many of the constraints that are characteristic of architectural scenes This work is placed in the context of the FaCade project, whose goal is to use images to produce photo-realistic novel views of architectural scenes