基于数码相机的亮度分布测试研究

发布时间：2018-05-19 23:30

本文选题：照明 + 亮度　；参考：《中国计量学院》2014年硕士论文

【摘要】：亮度在照明检测行业中是一个十分重要的参考指标，但是现有的检测设备在测试亮度分布过程中会存在诸多的局限性导致现有的亮度方法无法得到广泛的推广。随着电子技术和光学技术的发展，一方面数码相机的制造技术日臻完善，另一方面数字图像处理技术也得到了飞速发展。这些技术的进步，，使得利用数码相机和数字图形处理技术来获取目标物的亮度分布信息成为可能。利用数码相机所搭建的亮度分布测试系统将会成为一种新的可以获取亮度信息的测试工具，这种测试方法具有清晰度高、定位准确、测试时间短、重复性好、成本低、携带方便以及测试范围广等优势，而且可以实现测试部分和数据处理部分分开进行。在数码相机的基础上所开发的亮度分布测试系统具有广阔应用前景。本课题所做的主要工作包括： 1)从数码相机测光的基本原理和数字图像的基本特征出发，从理论上确定出数码相机的定标方案； 2)对数码相机的各项性能进行检测并分析，如：数码相机的均匀性、稳定性、动态范围等； 3)在确定具体的标定方法后，对明基GH600型数码相机进行了具体的标定实验，并分析实验结果； 4)编制了一整套可用于图像处理和图像亮度信息提取的软件系统； 5)通过具体的实验验证了本课题所研究的亮度测试系统的误差，并对产生误差的原因进行的定性的分析；本课题所研究的基于数码相机的亮度分布测试方法对我国的照明检测行业会起到积极地推动作用。
[Abstract]:Luminance is a very important reference index in the lighting detection industry. However, there are many limitations in the testing of luminance distribution in the existing detection equipment, so the existing luminance methods can not be widely popularized. With the development of electronic technology and optical technology, on the one hand, the manufacture technology of digital camera is becoming more and more perfect, on the other hand, the digital image processing technology has also been developed rapidly. With the development of these technologies, it is possible to use digital camera and digital graphics processing technology to obtain the luminance distribution information of the object. The luminance distribution testing system built by digital camera will become a new testing tool which can obtain luminance information. This testing method has high definition, accurate positioning, short test time, good repeatability and low cost. Easy to carry and a wide range of advantages, and can be carried out separately from the data processing part. The luminance distribution testing system based on digital camera has broad application prospect. The main work of this project includes: 1) from the basic principle of digital camera photometry and the basic characteristics of digital image, the calibration scheme of digital camera is determined theoretically; 2) detecting and analyzing the performance of digital camera, such as the uniformity, stability, dynamic range of digital camera; 3) after determining the specific calibration method, a specific calibration experiment is carried out on the bright base GH600 digital camera, and the experimental results are analyzed. 4) A software system for image processing and image luminance information extraction is developed. 5) the error of the luminance measurement system studied in this paper is verified by the concrete experiment, and the reason of the error is analyzed qualitatively. The luminance distribution testing method based on digital camera in this paper will play an active role in lighting detection industry in China.
【学位授予单位】：中国计量学院
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TB852.1;TP391.41

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