GLOBAL AND STRICT CURVE FITTING METHOD

Abstract

To find a global and smooth curve fitting, cubic B­Spline method and gathering­ line methods are investigated. When segmenting and recognizing a contour curve of character shape, some global method is required. If we want to connect contour curves around a singular point like crossing points, merging separated contours together which lies apart crossing the singular point is necessary. For this pur pose, cubic B­Spline method and new line­gathering method are investigated and proposed. The result is that cubic B­Spline method is rather too easy to bend. Easy to bend feature can cover singular point smoothly, so is not good to detect singular points. Gathering­line method is to represent the contour by overlapped line segments. By overlapping lines, arcs can be represented in natural way. Some investigations and experimental results are shown