应用光学成像技术检测棉花中异性纤维的研究进展

Research progress in optical imaging technology for detecting foreign fibers in cotton

为进一步提高棉花中异性纤维的检出率,针对光学成像技术在异性纤维检测中的应用情况进行探究,通过阐述紫外光、X射线、线激光、偏振光、红外光和高光谱成像技术的原理和检测效果,分析了各成像方法的优势及局限性。归纳总结了现有研究中存在的问题和不足,认为目前不同种类异性纤维检测适用的成像方法不同,无法同时检测出全部种类的异性纤维;而且多相机成像方案和相机分辨率的提高增加了图像冗余信息,影响了检测速度;同时大部分检测方法仅在实验室条件下得到验证,缺乏实际生产环境的检验。最后指出未来会以多相机多光源成像方案为主,减少图像信息冗余,合理选择光源的种类、数量、功率和安装方式,开发成像系统参数自动调整系统。

In order to further improve the detection rate of foreign fibers in cotton,the application of optical imaging technology in foreign fiber detection was explored.The principle and detection effect of ultraviolet,X-ray,linear laser,polarized light,infrared light and hyper-spectral imaging technology were evaluated and analyzed on the advantages and limitations of the various imaging methods,and the existing problems and deficiencies in the current research were summarized.It is considered that different imaging methods should be applied to detect different types of foreign fibers,and it is not possible to detect all types of foreign fibers at the same time.Moreover,the multi-camera imaging scheme and the improvement of camera resolution are found to increase the redundant information of images and affect the detection speed.At the same time,most of the testing methods are only verified under laboratory conditions and are short of verification in actual production environment.It is pointed out that the future research should focus on multi-camera multi-light source imaging scheme,and should work to reduce the redundancy of image information.Light sources should be reasonably selected on type,quantity,power and installation mode,and an automatic parameter adjustment system should be developed for imaging systems.