3D显示画质测评方法研究

发布时间：2019-06-21 09:46

【摘要】：随着平板显示技术的迅速发展,3D显示技术在立体显示器、立体电视和立体电影等产品上得到广泛运用,但国内外对于立体显示画质的测评,目前还没有相应规范的国家测量标准和测量方法,实际使用中以视觉感知的主观评价和部分的理论客观评价为主。因此很有必要对3D显示画质测评方法进行研究,建立一套科学的3D显示画质测评方法和标准来评价3D产品的显示质量优劣。本文深入分析3D显示基本原理、3D信号输入格式和平板液晶显示器工作原理,介绍主要的3D显示技术基础知识。在研究已有的3D主观测评体系的基础上,本文提出改进的3D显示画质测评方法,考虑观众的舒适度和安全性,建立主观的画质测评表和评分机制；利用多种信号产生设备输出3D测试信号源,测评3D显示器,分别从立体感、动态效果、色彩表现力、亮度表现力、可视角度大小和舒适感六大项目进行主观测评3D画质优劣。在研究客观评价图像质量和主观评价画质的基础上,搭建3D测试系统,构建一套完整的3D测试流程,提出一种通过客观电气测试方法来检测3D显示基本功能,以及提出六项客观光学测评指标来评价3D显示画质。在客观电气测量方面,根据3D显示器的线路工作原理和光电感应原理,制作光电感应器和测试屏蔽盒,将光电感应器放置在3D眼镜之后代替人眼观察,光感应器将侦测到的光信号转换成电信号,利用示波器和电流计测量3D显示器左右眼图像的开关时序来检测3D显示基本功能。在客观光学测量方面,根据3D显示光学特性,用专业的光学测量仪器测量3D显示器的亮度、亮度均匀度、对比度、串扰度、可视角度和响应时间这六项客观参数,结合改进后的主观评价结果来确认这些客观评判参数的合理性。经过测试快门式和偏光式3D显示器,整理和归纳各项主观测评和客观测量数据,分析测量结果表明改进的主观测评项目、评分机制、客观电气测量3D左右眼图像开关时序以及量化的客观光学测量参数能有效的反映3D显示器画质优劣,这些测量方法已作为本公司的3D测评标准,应用于3D显示器的研发与生产。
[Abstract]:With the rapid development of flat panel display technology, 3D display technology has been widely used in stereoscopic display, stereoscopic TV and stereoscopic film and other products. However, there is no corresponding standard national measurement standard and measurement method for the evaluation of stereoscopic display picture quality at home and abroad. In practical use, the subjective evaluation of visual perception and the partial theoretical objective evaluation are the main ones. Therefore, it is necessary to study the evaluation method of 3D display picture quality, and establish a set of scientific 3D display picture quality evaluation methods and standards to evaluate the display quality of 3D products. In this paper, the basic principle of 3D display, 3D signal input format and the working principle of flat panel liquid crystal display are deeply analyzed, and the main basic knowledge of 3D display technology is introduced. On the basis of studying the existing 3D subjective evaluation system, this paper proposes an improved 3D display picture quality evaluation method, considering the comfort and safety of the audience, and establishes a subjective picture quality evaluation table and scoring mechanism. The 3D test signal source is outputted by a variety of signal generating equipment, and the 3D display is evaluated and evaluated subjectively from six items: stereoscopic feeling, dynamic effect, color expressive force, brightness expressive force, visual angle size and comfort. On the basis of studying the objective evaluation of image quality and subjective evaluation of picture quality, a 3D test system is built, a set of complete 3D test flow is constructed, an objective electrical test method is proposed to detect the basic functions of 3D display, and six objective optical evaluation indexes are proposed to evaluate 3D display picture quality. In the aspect of objective electrical measurement, according to the circuit working principle and photoelectric induction principle of 3D display, the photoelectric inductor and test shield box are made. The photoelectric sensor is placed behind 3D glasses instead of human eye observation. The optical sensor converts the detected optical signal into electrical signal, and uses oscilloscope and ammeter to measure the switching timing of 3D display left and right eye image to detect the basic function of 3D display. In the aspect of objective optical measurement, according to the optical characteristics of 3D display, the brightness, brightness uniformity, contrast, crosstalk, visual angle and response time of 3D display are measured by professional optical measuring instruments. Combined with the improved subjective evaluation results, the rationality of these objective evaluation parameters is confirmed. After testing shutter and polarizing 3D displays, sorting out and summarizing various subjective evaluation and objective measurement data, the analysis and measurement results show that the improved subjective evaluation items, scoring mechanism, objective electrical measurement 3D left and right eye image switch timing and quantitative objective optical measurement parameters can effectively reflect the picture quality of 3D display. These measurement methods have been used as the 3D evaluation standard of our company. It is used in the research and development and production of 3D display.
【学位授予单位】：福州大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN873

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