数字摄影机动态范围的主客观评价关系探究  

Research on The Relationship Between Subjective and Objective Evaluation of Dynamic Range of Digital Camera

作　　者：陈绪朋 李勃[1] Chen Xupeng;Li Bo(China Film High-tech Research Institute,Beijing Film Academy)

机构地区：[1]北京电影学院中国电影高新技术研究院,北京100088

出　　处：《现代电影技术》2021年第4期21-29,共9页Advanced Motion Picture Technology

摘　　要：为了了解数字影像质量与人眼主观视觉感受之间的关系,本文以摄影机动态范围为例,进行一系列测试实验,初步探索影像质量技术参数在动态范围这一角度与人眼主观感受之间的关系。测试实验选择了三台常见的不同厂商的摄影机型,拍摄动态范围的测试卡以及利用软件进行读取数据来获取客观测试结果,同时拍摄不同光线下的实景让观察者进行观看来获取主观测试结果。测试实验结束后,对客观测试结果和主观测试结果进行对比分析,结果发现客观评价往往是和主观评价不一致的,这些不一致也为以后技术发展方向提供一些参考价值。In order to understand the relationship between digital image quality and human visual perception,this paper takes the camera dynamic range as an example to carry out a series of test experiments to preliminarily explore the relationship between image quality technical parameters in the dynamic range and human visual perception.In the test experiment,three common camera models from different manufacturers are selected,the test card of dynamic range is taken,and the software is used to read the data to obtain the objective test results.At the same time,the real scene under different light is taken for the observer to watch to obtain the subjective test results.After the test experiment,the objective test results and subjective test results are compared and analyzed.The results show that the objective evaluation is often inconsistent with the subjective evaluation.These inconsistencies also provide some reference value for the future development direction of technology.

关 键 词：数字摄影机 影像质量 动态范围 主客观测评 

分 类 号：J931[艺术—电影电视艺术]