Approach for scene reconstruction from the analysis of a triplet of still images

Patrick Lechat; Gwenaelle Le Mestre; Danielle Pele

doi:10.1117/12.269754

21 March 1997 Approach for scene reconstruction from the analysis of a triplet of still images

Patrick Lechat, Gwenaelle Le Mestre, Danielle Pele

Proceedings Volume 3023, Three-Dimensional Image Capture; (1997) https://doi.org/10.1117/12.269754
Event: Electronic Imaging '97, 1997, San Jose, CA, United States

Abstract

Three-dimensional modeling of a scene from the automatic analysis of 2D image sequences is a big challenge for future interactive audiovisual services based on 3D content manipulation such as virtual vests, 3D teleconferencing and interactive television. We propose a scheme that computes 3D objects models from stereo analysis of image triplets shot by calibrated cameras. After matching the different views with a correlation based algorithm, a depth map referring to a given view is built by using a fusion criterion taking into account depth coherency, visibility constraints and correlation scores. Because luminance segmentation helps to compute accurate object borders and to detect and improve the unreliable depth values, a two steps segmentation algorithm using both depth map and graylevel image is applied to extract the objects masks. First an edge detection segments the luminance image in regions and a multimodal thresholding method selects depth classes from the depth map. Then the regions are merged and labelled with the different depth classes numbers by using a coherence test on depth values according to the rate of reliable and dominant depth values and the size of the regions. The structures of the segmented objects are obtained with a constrained Delaunay triangulation followed by a refining stage. Finally, texture mapping is performed using open inventor or VRML1.0 tools.

Citation Download Citation

Patrick Lechat, Gwenaelle Le Mestre, and Danielle Pele "Approach for scene reconstruction from the analysis of a triplet of still images", Proc. SPIE 3023, Three-Dimensional Image Capture, (21 March 1997); https://doi.org/10.1117/12.269754

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KEYWORDS

3D modeling

Image segmentation

Cameras

3D image processing

Image analysis

3D displays

Calibration

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