Monitoring the fabrication process for as-built analysis and generation

Sankar Jayaram; Yvan J. Beliveau; Richard W. Conners

doi:10.1117/12.2294289

1 August 1990 Monitoring the fabrication process for as-built analysis and generation

Sankar Jayaram, Yvan J. Beliveau, Richard W. Conners

Proceedings Volume 1395, Close-Range Photogrammetry Meets Machine Vision; 13951A (1990) https://doi.org/10.1117/12.2294289
Event: Close-Range Photogrammetry Meets Machine Vision, 1990, Zurich, Switzerland

Abstract

The objective of this paper is to present a theoretical model which will create a computer vision system capable of monitoring the fabrication of a facil- ity. The monitoring process would be able to identify out-of-position components and to re-create an as-built CAD model from the construction process. An as-built schedule would be a direct output and would provide for improved scheduling inter action and analysis. While computer vision .technology has not reached maturity where arbitrarily complex scenes can be processed and "understood", there h reason to believe that a vision system for monitoring the fabrication of a facility can be developed. To create such a vision system will require a number of tasks. The focus of this project is to use the information in the CAD system together with the camera model, the camera location, the orientation of the opti- cal axis and the positions of the illuminators to predict how the objects in the facility should appear. This information can then be used in "top-down" analysis of the scene. In a top-down analysis a scene model is used to guide the search for the objects in the scene. While developing sophisticated computer vision systems has, in general, been difficult, developing sophisticated top-down vision systems has not.

Citation Download Citation

Sankar Jayaram, Yvan J. Beliveau, and Richard W. Conners "Monitoring the fabrication process for as-built analysis and generation", Proc. SPIE 1395, Close-Range Photogrammetry Meets Machine Vision, 13951A (1 August 1990); https://doi.org/10.1117/12.2294289

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