模拟雾环境下图像特征与主观评价的关系  

The Relationship Between Image Features and Subjective Evaluation Insimulated Fog Environment

作　　者：崔刚刚 徐方卉 周小丽[1] CUI Ganggang;XU Fanghui;ZHOU Xiaoli(Department of Light Source and Illuminating Engineering, Fudan University,Shanghai 200433,China;Office of General Affairs, Fudan University, Shanghai 200433,China)

机构地区：[1]复旦大学光源与照明工程系,上海200433 [2]复旦大学总务处,上海200433

出　　处：《照明工程学报》2021年第3期152-158,共7页China Illuminating Engineering Journal

基　　金：国家自然科学基金(项目编号:62075045)。

摘　　要：交通标示对驾驶员和乘客有着重要提示作用。在雾环境中,传播介质中水分子对光线的吸收和散射,会造成光束能量的衰减,影响光学信息的传递,使人们无法正确识别信息,导致误判,造成交通事故。本文在实验室模拟雾环境,改进了以往实验中用比值法定义雾浓度的方法,用粉尘仪测量雾浓度,并基于数字图像处理理论,定义了标准偏差表征图像特征的方法,得到了图像特征与主观评价之间的关系,为进一步研究雾浓度与主观评价之间的定量关系提供了数据基础。Traffic signs are important reminders for drivers and passengers.In a fog environment,the absorption and scattering of light by water molecules in the propagation medium will cause the attenuation of the beam energy,affect the transmission of optical information,make people unable to correctly identify the information,lead to misjudgments,and cause traffic accidents.This paper simulates the fog environment in the laboratory,improves the method of defining the fog density by the ratio method in the previous experiments,uses the dust meter to measure the fog density,and based on the digital image processing theory,defines the standard deviation to characterize the image characteristics,and obtains the image characteristics.The relationship with subjective evaluation provides a data basis for further research on the quantitative relationship between fog density and subjective evaluation.

关 键 词：雾 图像特征 标准偏差 主观评价 照明 

分 类 号：TM923[电气工程—电力电子与电力传动]