A Novel Algorithm for Active Contour Models: Adaptive Snakes
نویسندگان
چکیده
We present a novel algorithm to optimize deformable contour models. It overcomes an inherent problem of traditional snakes using a dynamic intervention in the evolution of the curve so that leads to better fidelity in contour detection. In practice, the main difference from the traditional GVF snakes is the definition of a feature merit function. The proposed method solves the problem of points bunching together on strong portions of the contour and achieves fuller matching of concavities with external forces. We also show with a set of wellparameterized images that the proposed solution leads to better convergence and matching.
منابع مشابه
Active Contour Models
Active contour models have been widely applied to image segmentation and analysis. It has been successfully used in contour detection for object recognition, computer vision, computer graphics, and biomedical image processing such as X-ray, MRI and Ultrasound images. The energy-minimizing active contour models or snakes were developed by Kass, Witkin and Terzopoulos in 1987. Snakes are curves d...
متن کاملAdaptive Snakes for Urban Road Extraction
For quickly populating GIS database, it is important to derive accurate and truly road information from imagery. In this paper, we describe the problem of urban road extraction from digital imagery using adaptive active contour models (Snakes). Our road extraction processing has three steps. First, we segment the image based on the dominant road directions. Second, we detect the road lines with...
متن کاملContour tting using an adaptive
This paper presents a new segmentation algorithm by tting active contour models (or snakes) to objects using adaptive splines. The adaptive spline model describes the contour of an object by a set of piecewisely interpolating C 2 polynomial spline patches which are locally controlled. Thus the resulting description of the object contour is continuous and smooth. Polynomial splines provide a fas...
متن کاملContour tting using an adaptive spline model
This paper presents a new segmentation algorithm by tting active contour models (or snakes) to objects using adaptive splines. The adaptive spline model describes the contour of an object by a set of piecewisely interpolating C polynomial spline patches which are locally controlled. Thus the resulting description of the object contour is continuous and smooth. Polynomial splines provide a fast ...
متن کاملTexture-adaptive Snakes Used in Cell Segmentation and Tracking
Identifying cell trajectories is an important step in analyzing physiological events in computerized Video Time-lapse Microcopy. The large variety and transformation of cell shapes and cells’ Brownian motion make cell tracking a challenge problem. In this paper we present a cell tracking system, implemented as a particle filter incorporated with texture-adaptive coupled active contours. The tex...
متن کامل