基于改进自蛇模型的文本图像放大

ocument image can be considered as binary image. Based on the characteristics of the document image, saw tooth phenomenon occurs seriously using the general magnification algorithm to magnify document images. Therefore a new method for magnifying document image is proposed. On the base of bilinear interpolation, this paper use Snake Model to smooth the edge of the document image. Tests shows that this algorithm can keep image edge information effectively.?????