Adaptation of Industrial Hyperspectral Line Scanner for Archaeological Applications

Miljković, Vanja; Gajski, Dubravko

doi:10.5194/isprsarchives-xli-b5-343-2016

Cited by 4 publications

(3 citation statements)

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“…There are several methods to transform raw hyperspectral data (raw cube) into geocoded one. Because of imaging geometry of the hyperspectral sensor (push-broom scanner), only the parametric geocoding methods can be applied directly (Miljković and Gajski, 2016).…”

Section: Methodsmentioning

confidence: 99%

Hyperspectral Imaging in Preservation of Croatia’s Historic Trees: A Case Study of Dedek Oak in Maksimir Park

Babić,

Miljković,

Odak

et al. 2023

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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Abstract. This study focuses on the application of hyperspectral imaging techniques for the genetic preservation of historic trees, specifically investigating the 600-year-old "Dedek" Oak in Maksimir Park, Croatia. The research aims to contribute to the conservation of Croatia's natural heritage and underscore the potential of hyperspectral imaging in tree preservation. The Croatian Forest Research Institute has been actively involved in preserving the pedunculate oak trees, recognizing their cultural and ecological significance. Efforts have been made to cultivate seedlings from the original genetic material, thereby preventing the loss of valuable genes and ensuring their long-term preservation. Spectral signatures of "Dedek" Oak and its clones were captured using high-performance hyperspectral push broom cameras, including the HySpex VNIR-1800 and SWIR-384. Spectral camera scanning was conducted in the field and laboratory. The comparative analysis of the spectral samples revealed unique characteristics and demonstrated the effectiveness of hyperspectral imaging in studying historic trees for preservation purposes. The spectral signatures of vegetation display dynamic characteristics in terms of spectral resolution. Collecting and documenting these signatures is considerably more challenging, and their integration into spectral libraries should be approached with careful consideration. There are several spectral libraries that are organized by chapters and consist of samples that have a sufficient number of analysis and documentation to determine the quality of the spectrum. In this study, spectral signatures of pedunculate oak (Quercus robur L.) called Dedek and its clones were singled out. The objective of this research was to establish a foundation for a spectral library that would facilitate future research on the application of hyperspectral scanners for detecting protected tree species and their clones, all for the purpose of preservation of the genetic diversity of protected trees in Croatia. The findings of this research contribute to the conservation of Croatia's natural heritage by providing valuable insights into the genetic preservation of the 600-year-old "Dedek" Oak. Also, determining the spectral signatures of clones can help us with the identification of specific tree species (especially during aerial imaging, which is planned to be conducted in the future). In conclusion, this research showcases the importance of preserving historic trees and the potential of hyperspectral imaging as a valuable tool for genetic preservation efforts. The study's outcomes contribute to the long-term conservation of Croatia's natural heritage and provide a foundation for future research in the field of tree preservation and spectral library inception.

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Section: Methodsmentioning

confidence: 99%

Hyperspectral Imaging in Preservation of Croatia’s Historic Trees: A Case Study of Dedek Oak in Maksimir Park

Babić,

Miljković,

Odak

et al. 2023

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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“…The helicopter Mi-8 platform was skipped in this research, as the spatial resolution was too low for the sake of target detection (due to blurring). Besides this primary purpose, the same mechanical scanner with V9 has been applied for archeological research [42] and in vineyards [43].…”

Section: Ground-based and Aerial Platformsmentioning

confidence: 99%

Modeling and Simulation of Very High Spatial Resolution UXOs and Landmines in a Hyperspectral Scene for UAV Survey

Bajić

2021

Remote Sensing

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This paper presents methods for the modeling and simulation of explosive target placement in terrain spectral images (i.e., real hyperspectral 90-channel VNIR data), considering unexploded ordnances, landmines, and improvised explosive devices. The models used for landmine detection operate at sub-pixel levels. The presented research uses very fine spatial resolutions, 0.945 × 0.945 mm for targets and 1.868 × 1.868 cm for the scene, where the number of target pixels ranges from 52 to 116. While previous research has used the mean spectral value of the target, it is omitted in this paper. The model considers the probability of detection and its confidence intervals, which are derived and used in the analysis of the considered explosive targets. The detection results are better when decreased target endmembers are used to match the scene resolution, rather than using endmembers at the full resolution of the target. Unmanned aerial vehicles, as carriers of snapshot hyperspectral cameras, enable flexible target resolution selection and good area coverage.

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“…( 1 ) Sensor bracket; ( 2 ) HSLS V9, diffuse collector, halogen lamp, engine (in red circle), ( 3 ) Control system (industrial controller and motor controller) and ( 4 ) Table with Roman archaeological artefacts found in Sisak, Croatia [55]. …”

Section: Figurementioning

confidence: 99%

Spatial Distortion Assessments of a Low-Cost Laboratory and Field Hyperspectral Imaging System

Krtalić

Miljković

Gajski

et al. 2019

Sensors

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This article describes the adaptation of an existing aerial hyperspectral imaging system in a low-cost setup for collecting hyperspectral data in laboratory and field environment and spatial distortion assessments. The imaging spectrometer system consists of an ImSpector V9 hyperspectral pushbroom scanner, PixelFly high performance digital CCD camera, and a subsystem for navigation, position determination and orientation of the system in space, a sensor bracket and control system. The main objective of the paper is to present the system, with all its limitations, and a spatial calibration method. The results of spatial calibration and calculation of modulation transfer function (MTF) are reported along with examples of images collected and potential uses in agronomy. The distortion value rises drastically at the edges of the image in the near-infrared segment, while the results of MTF calculation showed that the image sharpness was equal for the bands from the visible part of the spectrum, and approached Nyquist’s theory of digitalization. In the near-infrared part of the spectrum, the MTF values showed a less sharp decrease in comparison with the visible part. Preliminary image acquisition indicates that this hyperspectral system has potential in agronomic applications.

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Adaptation of Industrial Hyperspectral Line Scanner for Archaeological Applications

Cited by 4 publications

References 0 publications

Hyperspectral Imaging in Preservation of Croatia’s Historic Trees: A Case Study of Dedek Oak in Maksimir Park

Hyperspectral Imaging in Preservation of Croatia’s Historic Trees: A Case Study of Dedek Oak in Maksimir Park

Modeling and Simulation of Very High Spatial Resolution UXOs and Landmines in a Hyperspectral Scene for UAV Survey

Spatial Distortion Assessments of a Low-Cost Laboratory and Field Hyperspectral Imaging System

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