点阵汉字无级变倍算法

本文给出了由一种汉字字库得到任意大小汉字点阵的算法.该算法能对任意二值点阵图像进行放大平滑.简单放大是按字节进行运算,速度快;最佳平滑操作不是对简单放大后的点阵按位操作,而是根据原点阵的特性,在需要平滑的地方进行操作,需操作的位数不会超过图像总点数的5％.用该方法输出的汉字质量和速度都令人满意.

AN ADVANCED FREE-SCALING ALGORITHM FOR DOT MATRIX CHINESE CHARACTERS

An advanced free-scaling algorithm is presented, by which dot matrixChinese characters of all sizes can be obtained from one font. The (0, 1) dot matrix Chinesecharacter is output by two steps: the first, called simple enlarging operation, is executed byte by byte and have high speed; the second, called smooth operation, is executed only at the hits which need to be done in output image. These bits can be found out by analysing characters of the original font and are not more than five percent of the total, the quality and speed of Chinese characters' output by this algorithm is satisfactory.