Model-Based 3-D Scene Analysis from Stereoscopic Image Sequences

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Koch Reinhard

Model-Based 3-D Scene Analysis from Stereoscopic Image Sequences

Category:
Keywords: Image Processing,Virtual Reality,3-D Scene Analysis,Stereoscopic Image ,Sequence Analysis,Robot Vision,Scene Reconstruction,Close Range Photogrammetry

abstract:

A vision–based 3–D scene analysis system is described that is capable to model complex real–world scenes like buildings automatically from stereoscopic image pairs. Input to the system is a sequence of stereoscopic images taken with two standard CCD Came ras and TV lenses. The relative orientation of both cameras to each other is known by calibration. The camera pair is then moved throughout the scene and a long sequence of closely spaced views is recorded. Each of the stereoscopic image pairs is rectifi ed and a dense map of 3–D surface points is obtained by area correlation, object segmentation, interpolation, and triangulation. 3–D camera motion relative to the scene coordinate system is tracked directly from the image sequence which allows to fuse 3– D surface measurements from different viewpoints into a consistent 3–D model scene. The surface geometry of each scene object is approximated by a triangular surface mesh which stores the surface texture in a texture map. From the textured 3–D models, re alistic looking image sequences from arbitrary view points can be synthesized using computer graphics

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Graphics & Media Lab. >> Библиотека | Курсы | Графикон

Верстка, дизайн, программирование Людмила Попова
Выпускающий редактор Дмитрий Ватолин
Подготовка материала Ольга Карпенко