Contour reconstruction using recursive smoothing splines - Algorithms and experimental validation
نویسندگان
چکیده
منابع مشابه
Contour reconstruction using recursive smoothing splines - Algorithms and experimental validation
In this paper, a recursive smoothing spline approach for contour reconstruction is studied and evaluated. Periodic smoothing splines are used by a robot to approximate the contour of encountered obstacles in the environment. The splines are generated through minimizing a cost function subject to constraints imposed by a linear control system and accuracy is improved iteratively using a recursiv...
متن کاملPeriodic and Recursive Control Theoretic Smoothing Splines
In this paper a recursive control theoretic smoothing spline approach is proposed for reconstructing a closed contour. Periodic splines are generated through minimizing a cost function subject to constraints imposed by a linear control system. The optimal control problem is shown to be proper and sufficient optimality conditions are derived for a special case of the problem using Hamilton-Jacob...
متن کاملUsing Quantile Smoothing Splines to
The goal of this paper is to provide a statistically based deenition of employment subcenters for multicentric urban areas. In particular, we examine the shape of the employment density function using quantile smoothing splines as a nonparametric empirical speciication. This approach allows inspection of the employment gradient at the upper tail rather than the center of the employment density ...
متن کاملMonotone Smoothing Splines Using General Linear Systems
In this paper, a method is proposed to solve the problem of monotone smoothing splines using general linear systems. This problem, also called monotone control theoretic splines, has been solved only when the curve generator is modeled by the second-order integrator, but not for other cases. The difficulty in the problem is that the monotonicity constraint should be satisfied over an interval w...
متن کاملGlobally convergent edge-preserving reconstruction with contour-line smoothing
The standard approach to image reconstruction is to stabilize the problem by including an edge-preserving roughness penalty in addition to faithfulness to the data. However, this methodology produces noisy object boundaries and creates a staircase effect. The existing attempts to favor the formation of smooth contour lines take the edge field explicitly into account; they either are computation...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Robotics and Autonomous Systems
سال: 2009
ISSN: 0921-8890
DOI: 10.1016/j.robot.2009.01.003