图像矢量化是指将图片或工程图纸用数字化设备输入计算机中，经过矢量化处理形成CAD文件的过程。
Image vectorization refers to the process of inputting digitized pictures or drafts to the computer, and then getting CAD file by vectorizing the digital data.
随着计算机互联网和各种数字化设备的普及，有关多媒体信息管理的研究特别是图像检索越来越受到关注。
Along with the universalization of computer Internet and various digital equipments, multi-media information management research, in particular image retrieval, attracts more and more attention.
利用TWAIN标准对原植物叶片面积测量系统进行了改进，使其可以直接从支持TWAIN标准的数字化图像输入设备读取图像数据。
Using TWAIN standard, the leaf area measurement system is improved so that image data can be read directly from digital image equipment.
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