光照度对光纤环绕制图像清晰度影响分析

在视觉测量技术中光照度是照明系统中的一个重要参数,选取合适的光强对视觉测量系统至关重要。为了进一步确定光纤检测系统的最佳光强,将针对不同光强对图像质量及系统的检测精度产生影响展开研究。首先通过调制光源电源模块产生十种不同的光照度,然后利用五种清晰度函数分别评价各个光强下采集光纤环图像的清晰程度,并计算每幅图像中对应点的光纤直径测量误差以确定检测精度。实验结果显示:当光通量为200 lm时,图像的清晰度最佳,系统的检测精度最高。研究通过优化光照度有效地提高了系统的精度,同时为搭建视觉测量系统时选择合适的光照度提供了一定的参考价值。

Analysis of The Influence of Illumination on The Image Sharpness of Optical Fiber Winding

The illumination is a significant parameter of lighting system in the vision measurement technology.To select the appropriate light intensity for vision measurement system is very important..In order to determine the best light intensity for fiber winding detection system ,the paper will study the impact on the image quality and precision of the detection system from different intensity .First,the ten kinds of different illumination were produced by regulating light source.Second,this paper evaluated the quality of those images acquired under different light intensities by five evaluation functions.Then,this paper calculated measurement errors of the optical fiber diameter at the same position in every image for determining the detection accuracy .The result showed that the system accuracy is higher and the image is the clearest when flux is 200lm.The study effectively improves the accuracy of system by optimizing illumination ,besides provides some reference value for how to select the suitable illumination when building vision measurement system.