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1、浙 江 理 工 大 学 信 息 电 子 学 院毕业论文(设计)诚信声明我谨在此保证：本人所写的毕业论文(设计)，凡引用他人的研究成果均已在参考文献或注释中列出。论文(设计)主体均由本人独立完成，没有抄袭、剽窃他人已经发表或未发表的研究成果行为。如出现以上违反知识产权的情况，本人愿意承担相应的责任。声明人(签名)：年 月2摘摘 要要防水透湿性织物的用途很广，比如雨衣、防护衣、军用服装、消防服等等，所以对织物防水性能的检测与评定显得十分重要的。目前防水性能的评定主要依赖于人工进行，费工、费时，劳动强度大，并容易受人的生理、心理和社会环境等因素的影响，导致评定的结果偏差较大，一致性不理想，所以寻找客
2、观的评定方法显得十分重要。本课题采用计算机处理技术，对检测样本的数码图片进行图像处理，并采用了边缘检测技术检测测试区域和润湿区域，面对本项目最大的难题对有反光、色彩不匀、润湿区域反差不大的图片，本文运用了大津法(Otsu)和 Canny 算子边缘检测相结合的算法实现了测试区域和润湿区域边缘的自动检测功能。为了实现自动评级分等，本文根据检测标准图建立了润湿比(即润湿区域面积和检测区域面积之比)与等级、分值的关系曲线，实现了将用文字、图片描述的标准的数字化。测试时只需根据检测结果计算润湿比，即可根据润湿比与等级、分值的关系曲线求出等级和分值，实现了对织物润湿边缘的快速识别和对织物防水性能的自动评定
3、。利用计算机的自动评定技术，不仅实现了客观的评定，同时也提高了检测效率，所以本课题的研究很有实际的意义。关键词关键词：织物防水性能；Hough 变换；Canny 算法；等级评定；自动检测；AATCC 标准ABSTRACTThe use of waterproof and moisture-penetrable fabric is very broad, such as raincoats, protective clothing, military clothing, fire service, etc. So the assessment of waterproof fabric is ve
4、ry important. Currently, the assessments of waterproof performance mainly rely on manual. These methods are time-consuming and the labor intensity is too big, and they are very susceptible to the physical, psychological and social factors, which would lead to the error and undesirable consistency, s
5、o looking for an objective assessment method is very important. The subject uses computer technology, processes the samples digital photographs through digital image processing methods, takes the edge detection technology to detect the testing area and the wetting areal. Facing with this issuess big
6、gest problem - the reflective, uneven color, the contrast between the testing area and wetting area of the pictures, we combine Otsu algorithm and Canny operator edge detection algorithm, complete the testing area and the wetting area edge automatic detection. In order to achieve automatic classific
7、ation rating, we establish a relationship curve among the wetting ratio(wetting area and detection area,s ratio), grading and scores and make the words and the standard description of pictures into digital which is based on the testing standards. We calculat the wetting ratio according to the tested
8、 results, then work out the grading and score using the relationship curve among the wetting ratio(wetting area and detection area,s ratio), grading and scores, and we achieve the rapid identification of the right edge of the wetting fabric and automatic performance evaluation of waterproof fabric.
9、The using of computer assessment technology, not only can achieve objective assessment, but also can improve the efficiency of detection. Therefore, the research of this subject have a great practical significance.Keywords: waterproof fabric performance; hough transform; Canny algorithm; grading eva
10、luation; automatic detection; AATCC standards目目 录录摘要Abstract1 课题研究的目的、意义和国内外的研究现状 .11.1 织物防水性测试常用方法.21.2 AATCC 纺织标准的介绍.21.3 国外研究现状.41.4 国内现状.72 图像的预处理和形态学的处理 .112.1 图像的灰度化.112.2 直方图均衡化.122.3 滤波处理.122.4 边缘检测.132.5 图像的膨胀.142.6 细化(提取骨架).153 织物测试区域(圆轮廓)提取的研究及实现.174 润湿部分轮廓的提取 .204.1 传统的 Canny 算法.204.2 改进的 Canny 算法.224.2.1 值的选择.224.2.2 高低阈值的自动选取问题.224.3 填充封闭区域.24i4.4 润湿边界的提取.244.4.1 图像的腐蚀.244.4.2 边缘检测.
