In the part of preprocess phase, we should sharp the image and then use the maximum variance binalization, and after that is preliminary classification, eliminate noise, and the last is extract gesture contour.
在预处理阶段需要对图像锐化处理，在基于锐化处理后的图像用方差最大化方法进行二值化处理，接着就是初步分类和除噪声处理，最后提取手势图像的轮廓。
参考来源 - 结构分类的手势识别算法研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Firstly, preliminary classification was made on the test data in order to save the useful information of the majority class as much as possible.
首先，对测试集进行初分类，以尽可能多地保留多数类的有用信息；其次，对于被初分类预测为少数类的样本进行再次分类，以有效地提高少数类的分类性能。
The investigation and analysis were carded out on the distribution and characters of Bombax ceiba in Hainan Province, and a preliminary classification standard was formed.
对海南木棉的分布特点进行了调查和分析，并初步确立了分类标准。
This paper discusses the definition and range of the wheat flour for special use. The preliminary classification of flour for special use is given according to the major quality index.
本文对专用小麦粉的定义，范围等概念性问题作了探讨，并试图根据基础质量指标对专用粉进行初步分类。
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