陰影情報およびB-Spline曲面近似による立体形状の認識 : 第3報, 制御点の配置と認識効率

概要

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In the former report, we applied B-Spline surfaces to approximate the local surface of the shading and used the steepest descent method to minimize the difference between the shading of B-Spline surfaces and the image shading. Through the application of the method for the noises shading, we could reduce the effect of the noise and recognize the shape more correctly than the conventional method. However, being an interface for CAD, it is necessary to improve the recogniton efficiency. Therefore, in this report, we examine the control points arrangements and B-Spline degrees, and according to the result, we investigate a new process to set more control points around the extremun of the object. As a result, the proposed method can be available to recognize the shape form image shading.
1999-02-25