LiDAR for Archaeological Landscape Analysis: A Case Study of Two Eighteenth-Century Maryland Plantation Sites

Harmon, James M.; Leone, Mark P.; Prince, Stephen D.; Snyder, M. O.

doi:10.2307/40035883

Cited by 82 publications

(51 citation statements)

References 9 publications

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“…Atualmente, o LiDAR tem uma gama de aplicações em diversas áreas, como arqueologia (Harmon et al, 2006), planejamento costeiro, avaliação de risco de inundações, telecomunicações, redes de transmissão de energia, florestas, agricultura, petróleo, transportes, planejamento urbano e mineração, entre outras (Giongo et al, 2010). No Brasil, no entanto, a linha de pesquisa com o equipamento ainda é incipiente, com destaque para os trabalhos de Castro & Centeno (2005), Castro (2006), Zandoná et al (2008), Macedo (2009, Zonete (2009) e Zonete et al (2010.…”

Section: Introductionunclassified

Determinação do volume de madeira em povoamento de eucalipto por escâner a laser aerotransportado

Oliveira

Ferreira²,

Carvalho

et al. 2014

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar a possibilidade de se estimar o diâmetro à altura do peito (DAP) com os dados de altura e de número de árvores derivados do escâner a laser aerotransportado (LiDAR, "light detection and ranging"), e determinar o volume de madeira de talhão de Eucalyptus sp. a partir dessas variáveis. O número total de árvores detectadas foi obtido com uso da filtragem de máxima local. A altura de plantas estimada pelo LiDAR apresentou tendência não significativa à subestimativa. A estimativa do DAP foi coerente com os valores encontrados no inventário florestal; porém, também mostrou tendência à subestimativa, em razão do comportamento observado quanto à altura. A variável número de fustes apresentou valores próximos aos observados nas parcelas do inventário. O LiDAR subestimou o volume total de madeira do talhão em 11,4%, em comparação ao volume posto na fábrica. A tendência de subestimação da altura das árvores (em média, cerca de 5%) impactou a estimativa do volume individual de árvores e, consequentemente, a do volume do talhão. No entanto, é possível gerar equações de regressão que estimam o DAP com boa precisão, a partir de dados de altura de plantas obtidos pelo LiDAR. O modelo parabólico é o que possibilita as melhores estimativas da produção volumétrica dos talhões de eucalipto.Termos para indexação: Eucalyptus, inventário florestal, LiDAR, modelos biométricos, sensoriamento remoto. Determining timber volume of eucalyptus stands by airborne laser scanningAbstract -The objective of this work was to evaluate the possibility of estimating the diameter at breast height (DBH) with tree height and number data derived from airborne laser scanning (LiDAR, light detection and ranging) dataset, and to determine the timber volume of an Eucalyptus sp. stand from these variables. The total number of detected trees was obtained using a local maxima filtering. Plant height estimated by LiDAR showed a nonsignificant tendency to underestimation. The estimate for DBH was coherent with the results found in the forest inventory; however, it also showed a tendency towards underestimation due to the observed behavior for height. The variable number of stems showed values close to the ones observed in the inventory plots. LiDAR underestimated the total timber volume in the stand in 11.4%, compared to the total volume delivered to the industry. The underestimation tendency of tree height (5% mean value) impacted the individual tree volume estimate and, consequently, the stand volume estimate. However, it is possible to obtain regression equations that estimate DBH with good precision, from the LiDAR plant height derived data. The parabolic model is the one that provides the best estimates for timber volumetric yield of eucalyptus stands.

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Section: Introductionunclassified

Determinação do volume de madeira em povoamento de eucalipto por escâner a laser aerotransportado

Oliveira

Ferreira²,

Carvalho

et al. 2014

Pesq. agropec. bras.

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“…The opportunity to undertake such a survey soon arose. The earlier success of LiDAR programs in Europe [25][26][27] and the Americas [29,30] in penetrating forested areas to see surface archaeological remains was replicated in the 2009 Caracol LiDAR survey [19,20,34]. Because of the detail contained in the three-dimensionality of the point clouds that had been generated for Caracol, most archaeological projects working in western Belize (and other parts of the Maya area) became interested in accessing LiDAR data for their own specific research sites.…”

Section: Caracol Lidar Surveymentioning

confidence: 99%

“…As a result of this funding, NCALM was subcontracted to record 200 km The usefulness of LiDAR as an archaeological survey tool was first established in temperate forested landscapes [25][26][27]. LiDAR has been used to identify archaeological remains in forested areas in Europe [28], Canada [29], and the Americas [30], although the ease of this identification varies with the kind of tree cover and the amount of modern disturbance [31][32][33]. It has subsequently become evident that LiDAR is also useful in tropical forested landscapes, as has been shown in the point cloud that was produced around Caracol, Belize [20,34,35], the piedmont zone of Chiapas, Mexico [36], and Angkor, Cambodia [37].…”

Section: Caracol Lidar Surveymentioning

confidence: 99%

Ancient Maya Regional Settlement and Inter-Site Analysis: The 2013 West-Central Belize LiDAR Survey

Chase

Awe

et al. 2014

Remote Sensing

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18 different sites within this region. Thus, a large body of archaeological research provides both the temporal and spatial parameters for the varied ancient Maya centers that once occupied this area; importantly, these data can be used to help interpret the collected LiDAR data. The goal of the 2013 LiDAR campaign was to gain information on the distribution of ancient Maya settlement and sites on the landscape and, particularly, to determine how the landscape was used between known centers. The data that were acquired through the 2013 LiDAR campaign have significance for interpreting both the composition and limits of ancient Maya political units. This paper presents the initial results of these new data and suggests a developmental model for ancient Maya polities.

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“…The visualization of topographic data is a critical step in the analysis of LiDAR, and researchers have developed various techniques [18][19][20][21][22][23]. Scholars agree that there is no single method that promises the best results for all cases, and we need to consider the advantages and disadvantages of each technique to devise a strategy suited for specific objectives, the morphology of features of interests, and the local topography and vegetation.…”

Section: Visualization Techniquesmentioning

confidence: 99%

Archaeological Application of Airborne LiDAR with Object-Based Vegetation Classification and Visualization Techniques at the Lowland Maya Site of Ceibal, Guatemala

et al. 2017

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Abstract:The successful analysis of LiDAR data for archaeological research requires an evaluation of effects of different vegetation types and the use of adequate visualization techniques for the identification of archaeological features. The Ceibal-Petexbatun Archaeological Project conducted a LiDAR survey of an area of 20 × 20 km around the Maya site of Ceibal, Guatemala, which comprises diverse vegetation classes, including rainforest, secondary vegetation, agricultural fields, and pastures. We developed a classification of vegetation through object-based image analysis (OBIA), primarily using LiDAR-derived datasets, and evaluated various visualization techniques of LiDAR data. We then compared probable archaeological features identified in the LiDAR data with the archaeological map produced by Harvard University in the 1960s and conducted ground-truthing in sample areas. This study demonstrates the effectiveness of the OBIA approach to vegetation classification in archaeological applications, and suggests that the Red Relief Image Map (RRIM) aids the efficient identification of subtle archaeological features. LiDAR functioned reasonably well for the thick rainforest in this high precipitation region, but the densest parts of foliage appear to create patches with no or few ground points, which make the identification of small structures problematic.

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LiDAR for Archaeological Landscape Analysis: A Case Study of Two Eighteenth-Century Maryland Plantation Sites

Cited by 82 publications

References 9 publications

Determinação do volume de madeira em povoamento de eucalipto por escâner a laser aerotransportado

Determinação do volume de madeira em povoamento de eucalipto por escâner a laser aerotransportado

Ancient Maya Regional Settlement and Inter-Site Analysis: The 2013 West-Central Belize LiDAR Survey

Archaeological Application of Airborne LiDAR with Object-Based Vegetation Classification and Visualization Techniques at the Lowland Maya Site of Ceibal, Guatemala

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