摘要
随着电影银幕生产技术的快速发展以及立体观影对放映亮度要求的提高,高反射率的小孔径电影银幕甚至微米级孔径的微孔径电影银幕产品不断涌现。但电影银幕的柔性特征让传统孔径测量工艺捉襟见肘,原本用于电影银幕测量的方法越来越难以满足微孔测量的精度要求。本文介绍了一种利用高分辨率图像扫描仪和基于图像识别技术的电影银幕穿孔测量系统。文章首先介绍了微孔柔性电影银幕测量的局限性和测量要求及传统测量方法的局限性,随后介绍了利用高分辨率扫描仪结合霍夫变换等图像识别技术的银幕穿孔测量算法,以及使用该算法实现的微孔电影银幕测量程序,最后对该测量系统的测量精度进行了不确定度分析。
With the rapid development of film screen production technology and stereoscopic viewing of the brightness of the projection requirements.High reflectivity of the small aperture film screen or even micron aperture micro-aperture film screen products continue to emerge.However,the flexible characteristics of the film screen make the traditional aperture measurement process stretched,the original method used for film screen measurement is increasingly difficult to achieve the accuracy requirements of micro-aperture measurement.This paper introduces a film screen perforation measurement system using a high-resolution image scanner and image recognition-based technology.The article first introduces the limitations and measurement requirements of micro-aperture flexible movie screen measurement and the limitations of traditional measurement methods,then introduces the screen perforation measurement algorithm using a high-resolution scanner combined with image recognition techniques such as the Hough transform,and a microaperture movie screen measurement application implemented using this algorithm,and finally provides an uncertainty analysis of the measurement accuracy of this measurement system.
作者
周令非
Zhou Lingfei(China Research Institute of Film Science and Technology(Test Institute of Film Technical Quality))
出处
《现代电影技术》
2022年第3期12-20,共9页
Advanced Motion Picture Technology
基金
国家重点研发计划《影视媒体融合服务技术集成与应用》(2018YFB1404000)中《电影数字水印和新型显示格式关键技术研究与示范》课题资助(2018YFB1404004)。
