The steady advances in technology employed in smartphones, coupled with the high availability and the ease access to these devices, increased the interest in applying it to analytical purposes. The main goal is to develop simple, fast, and low‐cost analytical methods, generating immediate results. Different analytical strategies using smartphones have been proposed to identify or determine different analytes in a wide range of matrices. Some of them use the smartphone to capture the images, to process them, and to provide the analytical results. Others use this device just for image acquisition. In this context, this review aimed to relate previous works that used smartphones to acquire images for analytical purposes, with a special focus on PhotoMetrix application, which is a tool for chemical analysis. This application allows the decomposition of digital images acquired by smartphone cameras and to process them within the same device, allowing in situ chemical analysis.

中文翻译：

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使用智能手机进行 PhotoMetrix 和色度图像分析

智能手机所采用技术的稳步发展，加上这些设备的高可用性和易用性，增加了将其应用于分析目的的兴趣。主要目标是开发简单、快速和低成本的分析方法，产生立竿见影的结果。已经提出了使用智能手机的不同分析策略来识别或确定各种基质中的不同分析物。他们中的一些人使用智能手机来捕捉图像、处理图像并提供分析结果。其他人使用此设备仅用于图像采集。在这种情况下，本次审查旨在将以前使用智能手机获取图像以用于分析目的的工作联系起来，特别关注 PhotoMetrix 应用程序，它是一种化学分析工具。