A new efficient approach about connected area for the removal of impulse noise is presented on the characteristic of binary image in the OCR application system.

• 摘要根据OCR应用系统中二值图像应用的特点，介绍了一种利用连通性来去除二值图像中噪声的滤波算法，并与中值滤波和区域填充法进行了比较。