Model-Based Scene Matching

摘要

Results form this work on model-based scene-matching schemes lead us to believe that our approach is sufficiently sound and robust to perform adequately with complex real imagery appropriate to various possible mission scenarios. Some of these results were given in this report; in particular, schemes include: the feasibility demonstration of the vertex-based model-matching system for registering two scenes. Many parts of this system have already been perfected--interfacing and feedback loops between the different parts remain to be developed. The needed modifications are outlined in this section. Experimental results on scene matching using vertex models are reported. The results illustrate the robustness and inherent power of mode-based matching techniques. The approach has the advantage that the reference model is simple and has low data requirements. The reference model is constructed before it is needed; it is often only necessary to store a list of points (vertices) and their interconnections, and it is feasible to store multiple references. Also, any modifications or changes needed to update the reference model can be conveniently specified. In a software implementation on a general-purpose machine of the model construction and matching techniques, the majority of computing required was at the lowest level (e.g., edge detection). Edges are currently detected by the Hueckel operator, which is a complex, time-consuming process. However, the Hueckel operator apparently can be replaced with a simpler edge-detection technique. This technique can be implemented in hardware for real-time operation.