Modern Mobile Mapping: Moving Toward GPS/INS-aided Real-time Image Processing

Charles Toth and Dorota Grejner-Brzezinska

Abstract:	The Ohio State University currently is developing a GPS/INS/CCD integrated system1 for precise (centimeter level) monitoring of highway center and edge lines. The positioning component of the system is based on a tightly integrated GPS/INS system, and the imaging component comprises a single down looking, high-performance digital color camera. The high image rate provides sufficient overlap of the subsequent images at highway speed; therefore, stereo data processing is expected to be performed in real-time with the support of on-the-fly navigation solution. The focus of this paper is on the design, calibration, and preliminary performance analysis of the prototype system. The application of the navigation data to real-time image processing represents a new approach. The process of automatically identifying centerlines, extracting image features and matching them is demonstrated on a variety of data sets, indicating clearly that the algorithmic performance has reached a sufficient threshold such that human interaction is no longer required, and consequently, the only limiting condition of the real-time implementation is the available computer processing power.
Published in:	Proceedings of the 14th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2001) September 11 - 14, 2001 Salt Palace Convention Center Salt Lake City, UT
Pages:	3119 - 3125
Cite this article:	Toth, Charles, Grejner-Brzezinska, Dorota, "Modern Mobile Mapping: Moving Toward GPS/INS-aided Real-time Image Processing," Proceedings of the 14th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2001), Salt Lake City, UT, September 2001, pp. 3119-3125.
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