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Effective Dynamic Range Evaluation of Digital Still Images in Mobile Devices

机译：移动设备中数字静止图像的有效动态范围评估

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Digital photography has immersed in everyday surroundings through mobile devices which became the most popular tool for taking pictures. However, the compactness of these devices is an obstacle for certain image quality parameters when it comes to usability. The purpose of this paper is to analyze the effective dynamic range of mobile device cameras. We obtained opto-electric conversion function (OECF) measurements according to ISO standard for total and effective dynamic range evaluation. Additionally, the evaluation of effective dynamic range using high dynamic range image construction was performed where algorithms for tone mapping were applied. Our findings indicate little difference in OECF values among different mobile device cameras, as well as for the total dynamic range values. However, when it comes to the effective dynamic range, cameras in these devices show less input-output conversion stability. Additionally, tone mapping indicates that the effective dynamic range is different between devices.
机译：数码摄影已沉浸在日常环境中，通过移动设备，成为拍照的最受欢迎的工具。然而，这些装置的紧凑性是在涉及可用性时某些图像质量参数的障碍。本文的目的是分析移动设备摄像机的有效动态范围。我们根据ISO标准获得了光电转换功能（OECF）测量，用于总和有效的动态范围评估。另外，使用高动态范围图像结构进行有效动态范围的评估，其中应用了音调映射的算法。我们的研究结果表明不同移动设备相机之间的OECF值差异，以及总动态范围值。但是，涉及有效动态范围时，这些器件中的摄像机显示出较少的输入输出转换稳定性。此外，音调映射表示设备之间有效动态范围不同。

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