Reinforcing the edge and features of the image can make it clear to human vision character or recognition for machine system.
为了提高图像的清晰度使之更适合于人的视觉特性或机器的识别，需要对图像的特征或边缘进行加强。
The paper introduces not only the character and the operating methods of this system, but also its normal or abnormal features of the acoustic image.
并介绍高速辐射式成象仪的特点和操作方法。以及正常、异常声象图特征。
Through calculating the connected components of the background area of character image, hole features of a handwritten character image can be extracted.
提出了基于等价类行程的连通域算法，通过计算字符图像背景区域连通域提取手写字符图像的孔洞特征。
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