Abstract. This paper presents how the image-based rendering technique ofviewdependent texture-mapping (VDTM) can be efficiently implementedusing projective texture mapping, a feature commonly available inpolygon graphics hardware. VDTM is a technique for generating novelviews of a scene with approximately known geometry making maximal useof a sparse set of original views. The original presentation of VDTMby Debevec, Taylor, and Malik required significant perpixelcomputation and did not scale well with the number of original images.In our technique, we precompute for each polygon the set of originalimages in which it is visible and create a "view map" data structurethat encodes the best texture map to use for a regularly sampled setof possible viewing directions. To generate a novel view, the viewmap for each polygon is queried to determine a set of no more thanthree original images to blend together to render the polygon.Invisible triangles are shaded using an object-space hole-fillingmethod. We show how the rendering process can be streamlined forimplementation on standard polygon graphics hardware, and presentresults of using the method to render a large-scale model of theBerkeley bell tower and its surrounding campus environment.
In REF the authors present how VDTM can be efficiently implemented using projective texture mapping, a feature available in most computer graphics hardware.
Efficient View-Dependent Image-Based Rendering with Projective Texture-Mapping
ICAT Workshops
Computer Science