Salazar-Vazquez Jairo, Mendez-Vazquez Andres
Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Av. del Bosque 1145, colonia el Bajío, ZC, 45019, Mexico.
HardwareX. 2019 Nov 22;7:e00087. doi: 10.1016/j.ohx.2019.e00087. eCollection 2020 Apr.
Hyperspectral Imaging Sensors (HSI) obtain spectral information from an object, and they are used to solve problems in Remote Sensing, Food Analysis, Precision Agriculture, and others. This paper took advantage of modern high-resolution cameras, electronics, and optics to develop a robust, low-cost, and easy to assemble HSI device. This device could be used to evaluate new algorithms for hyperspectral image analysis and explore its feasibility to develop new applications on a low-budget. It weighs up to 300 g, detects wavelengths from 400 nm-1052 nm, and generates up to 315 different wavebands with a spectral resolution up to 2.0698 nm. Its spatial resolution of 116 × 110 pixels works for many applications. Furthermore, with only 2% of the cost of commercial HSI devices with similar characteristics, it has shown high spectral accuracy in controlled light conditions as well as ambient light conditions. Unlike related works, the proposed HSI system includes a framework to build the proposed HSI from scratch. This framework decreases the complexity of building an HSI device as well as the processing time. It contains every needed 3D model, a calibration method, the image acquisition software, and the methodology to build and calibrate the proposed HSI device. Therefore, the proposed HSI system is portable, reusable, and lightweight.
高光谱成像传感器（HSI）可从物体获取光谱信息，用于解决遥感、食品分析、精准农业等领域的问题。本文利用现代高分辨率相机、电子设备和光学器件，开发了一种坚固耐用、成本低廉且易于组装的HSI设备。该设备可用于评估高光谱图像分析的新算法，并探索在低成本下开发新应用的可行性。它重量高达300克，可检测400纳米至1052纳米的波长，能生成多达315个不同波段，光谱分辨率高达2.0698纳米。其116×110像素的空间分辨率适用于多种应用。此外，与具有类似特性的商用HSI设备相比，其成本仅为2%，在受控光照条件以及环境光条件下均显示出较高的光谱精度。与相关工作不同，所提出的HSI系统包括一个从零开始构建HSI的框架。该框架降低了构建HSI设备的复杂性以及处理时间。它包含所需的每个3D模型、校准方法、图像采集软件以及构建和校准所提出的HSI设备的方法。因此，所提出的HSI系统具有便携、可重复使用和轻便的特点。
