Is is necessary to abstract the topology information from preprocessed image while converting grid data into vector data.
栅格格式数据转换为矢量格式数据时必须提取原图像上包含的拓扑信息。
Of the defects detection system of the shell of crystal oscillator, obtaining high quality preprocessed image is prerequisite to correctly verify the defects.
在晶振外壳缺陷检测系统中，正确识别缺陷的前提条件是得到高质量的预处理图像。
In the seal imprint verification system of bank, obtaining high quality preprocessed image is a prerequisite to correctly verify the seal imprint of documents.
在银行的印章鉴定系统中，正确识别票据印章的前提条件是得到高质量的预处理图像。
The author of this article has taken part in many projects about field spectra collection and airborne remote sensing, preprocessed a lot of field and image spectra in these years.
作者在近些年内参加了多次地面光谱采集和遥感飞行试验，对大量的地面光谱和图像光谱进行预处理。
The character image from the input device must be preprocessed to filter noises and enhance useful information.
为了滤除噪声，增强有用信息，经输入设备输入的字符图像一般需做预处理。
A hardware image preprocessing technique based on CPLD was presented, by which the input image was preprocessed significantly and the processing time could meet the needs of the real time processing.
提出了一种基于CPLD的硬件图像预处理技术，可以对输入图像进行必要的预处理并且处理时间满足实时性要求。
A hardware image preprocessing technique based on CPLD was presented, by which the input image was preprocessed significantly and the processing time could meet the needs of the real time processing.
提出了一种基于CPLD的硬件图像预处理技术，可以对输入图像进行必要的预处理并且处理时间满足实时性要求。
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