There are two kinds of methods to contract image by means of computer language, that is, the method to contract image by sampling and the method to contract image by averaging.
使用计算机语言进行图像缩小一般有抽样缩小和平均缩小，其方法是将源图像分割成多个子域。
At last, pay attention to management of the contract and comprehensive administration, safeguard the image of the enterprise and economic benefits.
最后，重视合同管理和综合治理，维护企业的形象和经济利益。
The techniques of image tracing, encoding and spread and contract are used to extract the essential picture feature for recognition.
文中还应用了图象跟踪、编码及扩展和收缩等技术，抽取出识别所必需的图象特征。
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