焊缝底片数字化系统及其评价方法

Digital system of welding film and its evaluation method

建立了一套针对焊缝底片的数字化系统,该系统由企业级CCD相机、高亮线形LED光源、底片传送机构、STM32嵌入式控制器、PC等组成。针对工业底片数字化的高空间分辨力、高密度对比灵敏度、大动态范围、高光学密度、大位深、高效率等要求,开展了各项关键技术的研究,实现了X射线焊缝底片的高质量数字化。对底片数字化设备的评价方法进行了研究,分析底片数字化设备的关键指标及其评价实现方法,利用数字图像处理方法对底片数字化系统进行客观评价。

A digital system for the weld film is established, and it consists of enterprise CCD camera,highlight linear LED light source,film transfer mecilanism,STM32 embedded controller, PC and other components Aiming at the requirements of high spatial resolution,high density contrast sensitivity,large dynamic range,high optical density,large bit depth and high efficiency of industrial film digitization,the research of key technologies has been carried out to realize the high quality digitization. In this paper,the evaluation method of the digital equipment is studied, the key indexes of the digital equipment are analyzed and the evaluation method is realized. The digital image processing method is used to evaluate the digital system.