Comparison of automatic and interactive thresholding of hemispherical photography [PDF]
Journal of Forest Science, 2011 This study presents the effects of operator bias and variation in interactive thresholding on the estimation of light environment using hemispherical photography.
A. Inoue, K. Yamamoto, N. Mizoue
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Hemispherical photography to estimate biophysical variables of cotton [PDF]
Revista Brasileira de Engenharia Agrícola e Ambiental, 2016 The Leaf Area Index (LAI) is a key parameter to evaluate the vegetation spectral response, estimating plant nutrition and water requirements. However, in large fields is difficult to obtain accurate data to LAI determination.
Ziany N. Brandão, João H. Zonta
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Usage of Lidar Data for Leaf Area Index Estimation [PDF]
GeoScience Engineering, 2014 Leaf area index (LAI) can be measured either directly, using destructive methods, or indirectly using optical methods that are based on the tight relationship between LAI and canopy light transmittance.
Sabol Jan +2 more
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Optimizing forest canopy structure retrieval from smartphone-based hemispherical photography [PDF]
Methods in Ecology and Evolution, 2021 AbstractHemispherical photography (HP) is a long-standing tool for forest canopy characterization. Currently, there are low-cost fisheye lenses to convert smartphones into highly portable HP equipment (smartphone-based HP, hereafter SHP). However, there is an obstacle to having a close-to-ideal method for citizen science and large-scale or ...
Gastón Mauro Díaz
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EXPLORING CANOPY CLOSURE OF FOREST TRAILS IN BUDDHIST TEMPLES USING HEMISPHERICAL PHOTOGRAPHY
Applied Ecology and Environmental Research, 2023 Lee DonKoo
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Botanical illustration and photography: a southern hemisphere perspective [PDF]
Australian Systematic Botany, 2017 To examine claims that the role of botanical art in systematic botany is diminishing because of advances in photography, this review considers relevant literature and includes a quantitative analysis of trends in modern journals, monographs and floras.
Ellen J. Hickman +2 more
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THE CONNECTION BETWEEN CANOPY COVER AND WATER QUALITY IN THE COASTAL OF TABANIO VILLAGE OF TANAH LAUT REGENCY, SOUTH KALIMANTAN [PDF]
Russian Journal of Agricultural and Socio-Economic Sciences, 2023 Canopy cover is one approach to measuring canopy density. The area of land is covered by the vertical projection of the plant canopy or tree canopy is known as canopy cover.
Tony F. +4 more
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Tree shading factor as input for thermal model through hemispherical photography
Building Simulation Conference Proceedings, 2021 Solar irradiation contributes to heat gain through building envelopes and has a significant impact on building energy consumption. Trees help reduce incident irradiation and need to be considered as exterior obstructions in energy models. Deploying robust models in early design stages is integral to designing energy efficient buildings.
Suyashi Srivastava +2 more
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Estimation of Relative Iilluminance using Digital Hemispherical Photography
Journal of Forest Planning, 2002 Akio Inoue +3 more
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Model-based local thresholding for canopy hemispherical photography [PDF]
Canadian Journal of Forest Research, 2018 Canopy hemispherical photography (HP) is widely used to estimate forest structural variables. To achieve good results with HP, a classification algorithm is needed to produce binary images to accurately estimate the gap fraction. Our aim was to develop a local thresholding method for binarizing carefully acquired hemispherical photographs.
Gastón Mauro Díaz +1 more
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