Difficulties in segmentation of the Chinese check images are derived mainly from the different types and positions of the seal imprints, which is often dark and stroke-like.

• 其中字符图像的分割是预处理过程中的一个重要环节，对识别系统有很大的影响。在我国的支票图像中常含有较深的印章图像叠加在被分割的字符上，增加了字符分割的难度。