Multi-scale and hierarchical description using energy controlled active balloon model
نویسندگان
چکیده
A novel multi-scale tree construction algorithm for three dimensional shape using \Energy Controlled Active Balloon Model(EC-ABM)" is proposed. The key idea is that (1) internal and external energies and a number of surfaces which make up the ABM are controlled at each shrinking steps, and (2) each converged shape is regarded as one multi-scale shape. Some experimental three dimensional recognition result of the proposed method with human face data are shown.
منابع مشابه
Hierarchical Shape Description of MR Brain Images Based on Active Contour Models and Multi-Scale Differential Invariants
We have developed a novel hierarchical shape description tool, combining two recently developed and powerful techniques in image processing: differential invariants in scale space, and active contour models. We employ this tool for data-driven quantitative shape studies of Magnetic Resonance (MR) images of the brain at multiple scales. Extracting a shape at different levels of scale yields a mu...
متن کاملMultiscale Shape Description of Mr Brain Images Using Active Contour Models
In this paper we present a hierarchical multiscale shape description tool based on active contour models which enables data-driven quantitative and qualitative shape studies of MR brain images at multiple scales. At large scales, global shape properties are extracted from the image, while smaller scale features are suppressed. At lower scales, the detailed shape characteristics become more prom...
متن کاملEnergy Optimization of Under-actuated Crane model for Time-Variant Load Transferring using Optimized Adaptive Combined Hierarchical Sliding Mode Controller
This paper designs an Optimized Adaptive Combined Hierarchical Sliding Mode Controller (OACHSMC) for a time-varying crane model in presence of uncertainties. Uncertainties have always been one of the most important challenges in designing control systems, which include the unknown parameters or un-modeled dynamics in the systems. Sliding mode controller (SMC) is able to compensate the system in...
متن کاملMulti-Scale Shape Description in Medical Imaging
We have developed a hierarchical tool for shape description in medical imaging, based on the concepts of scale space and active contour models. The scale space representation allows to capture global shape outlines at a high level of scale or low image resolution, while finer scale shape details can be tracked for increasing levels of image resolution or decreasing scales, thus allowing to quan...
متن کاملMulti - Scale Active Shape
A multi-scale shape description tool based on active contour models has been developed, allowing to regularize and describe shape changes across scales. The internal energy of this spline-based model depends on analytic shape forces, and the external energy incorporates geometric image features like the image gradient and isophote curvature. Results of applying this technique to artiicial image...
متن کامل