说明：  一个基于像素的字符分割。适合于数字，字母单笔画的分割。比一般的投影法要快。本例为行分割，稍加改动即可实现列分割。
(a pixel-based segmentation of the characters. Suitable for numbers, letters segmentation single stroke. Than the projection speed. The cases of bits, a little change can be realized out segmentation.)