In the image pre-processing, we produces an improved multi-weighted filter algorithm which has a better denoising result with a variety of filtering algorithms.
在图像预处理中，针对图像采集过程中产生的噪声问题，结合多种中值滤波算法，得出一种改进的多级加权滤波算法。
The research of the character image pre-processing focuses on the gray-scale image filtering algorithm, the skew detection of image and character segmentation algorithm;
在字符图像预处理方面，重点研究了灰度图像滤波算法、图像的倾斜检测和字符分割算法；
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