|
Abstract : |
An efficient outline approximation technique is presented using cubic Bezier curves which is ultimately used for capturing Arabic characters. Approximation technique is based on computation of data points which is a mixture of interpolating and approximating data points. Approximating data points can represent blobby and circular shapes very efficiently and interpolating points are useful to preserve the original shape of outlines at sharp corners. A normal piecewise cubic Bezier spline through these data points is an approximating curve which is CG(1) continuous. Data point detection process is based on efficient control point search algorithm. Recursive segment subdivision is employed to keep the approximation error with in specified threshold limits. Demonstrated results show that only few data points can accurately represent the captured outlines. Any transformation operation on these data points results in overall transformation of captured outlines., |
