基于图像处理的纱线捻系数与明度关系研究

Study on Relationship between Yarn Twist Factor and Lightness Based on Image Processing

基于图像处理法研究捻系数对有色环锭纺纱线表面明度的影响。采用超景深显微镜进行纱线图像采集,再对图像进行裁剪,用中值滤波进行去噪后,提取出图像的RGB信息,去除纯黑色像素点,再将RGB颜色空间转换为HSV颜色空间,对其明度通道进行提取。绘制出明度值的三维曲面图与正态密度曲线直方图,并对数据图进行分析。结果表明:此方法能较为准确地表征环锭纺纱线表面的明度分布。认为:在满足纱线性能及用纱条件的情况下,捻系数的微调比小比例纤维混色更易于控制纱线颜色。

The influence of twist factor on the surface lightness of colored ring spun yarn was studied based on image processing.The yarn image was collected by super field depth microscope.Then,the image was cut and denoised with median filter.The RGB information of images was extracted.The pure black pixels were removed.After that,the RGB color space was transferred to HSV color space.Its lightness channel was extracted.The three-dimensional surface diagram of lightness value and normal density curve histogram were drawn.The data graphs were analyzed.The results showed that the surface lightness distribution of ring spun yarn could be accurately evaluated by this method.It is considered that the fine tuning of twist factor is easier to control the yarn color compared with smaller scale fiber color mixing when the yarn properties and yarn usage condition can be satisfied.