Syntactic Approach To Geometric Surface Shell Determination

Donald G. DeGryse; Dale J. Panton

doi:10.1117/12.959155

23 December 1980 Syntactic Approach To Geometric Surface Shell Determination

Donald G. DeGryse, Dale J. Panton

Proceedings Volume 0238, Image Processing for Missile Guidance; (1980) https://doi.org/10.1117/12.959155
Event: 24th Annual Technical Symposium, 1980, San Diego, United States

Abstract

Autonomous terminal homing of a smart missile requires a stored reference scene of the target for which the missle is destined. The reference scene is produced from stereo source imagery by deriving a three-dimensional model containing cultural structures such as buildings, towers, bridges, and tanks. This model is obtained by the precise matching of cultural features from one image of the stereo pair to the other. In the past, this stereo matching process has relied heavily on local edge operators and a gray scale matching metric. The processing is performed line by line over the imagery and the amount of geometric control is minimal. As a result, the gross structure of the scene is determined but the derived three-dimensional data is noisy, oscillatory, and at times significantly inaccurate. This paper discusses new concepts that are currently being developed to stabilize this geometric reference preparation process. The new concepts involve the use of a structural syntax which will be used as a geometric constraint on automatic stereo matching. The syntax arises from the stereo configuration of the imaging platforms at the time of exposure and the knowledge of how various cultural structures are constructed. The syntax is used to parse a scene in terms of its cultural surfaces and to dictate to the matching process the allowable relative positions and orientations of surface edges in the image planes. Using the syntax, extensive searches using a gray scale matching metric are reduced.

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Donald G. DeGryse and Dale J. Panton "Syntactic Approach To Geometric Surface Shell Determination", Proc. SPIE 0238, Image Processing for Missile Guidance, (23 December 1980); https://doi.org/10.1117/12.959155

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KEYWORDS

Image segmentation

Image processing

Cameras

Buildings

Missiles

Algorithm development

Digital image processing

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