Model-based algorithm for rotation invariant target recognition using laser radar range imagery

The out-of-plane rotation invariance is demonstrated for a recognition system for laser radar (ladar) range imagery. The key of our method is to transform an original ladar range image of scene data into a height-range image. We demonstrate experimentally that our method provides the out-of-plane rotation invariance property and preserves in-plane rotation invariant characteristics at the same time. We also show experimentally the relationship between the recognition rate and depression angles.

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