Search Results - "Leblanc, Sylvain"

Parametric (modified least squares) and non-parametric (Theil–Sen) linear regressions for predicting biophysical parameters in the presence of measurement errors by Fernandes, Richard, G. Leblanc, Sylvain

“…Remote sensing often involves the estimation of in situ quantities from remote measurements. Linear regression, where there are no non-linear combinations of…”
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Integration of multi-scale remote sensing data for reindeer lichen fractional cover mapping in Eastern Canada by He, Liming, Chen, Wenjun, Leblanc, Sylvain G., Lovitt, Julie, Arsenault, André, Schmelzer, Isabelle, Fraser, Robert H., Latifovic, Rasim, Sun, Lixin, Prévost, Christian, White, H. Peter, Pouliot, Darren

“…Reindeer lichens (Cladonia spp.) are an essential food source for caribou especially during winter. They can also be a valuable indicator for ecosystem health…”
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A Novel Framework for Rapid Detection of Damaged Buildings Using Pre-Event LiDAR Data and Shadow Change Information by Zhang, Ying, Roffey, Matthew, Leblanc, Sylvain G.

“…After a major earthquake in a dense urban area, the spatial distribution of heavily damaged buildings is indicative of the impact of the event on public…”
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HemiPy : A Python module for automated estimation of forest biophysical variables and uncertainties from digital hemispherical photographs by Brown, Luke A., Morris, Harry, Leblanc, Sylvain, Bai, Gabriele, Lanconelli, Christian, Gobron, Nadine, Meier, Courtney, Dash, Jadunandan

“…Digital hemispherical photography (DHP) is widely used to derive forest biophysical variables including leaf, plant, and green area index (LAI, PAI and GAI),…”
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Leveraging Deep Neural Networks to Map Caribou Lichen in High-Resolution Satellite Images Based on a Small-Scale, Noisy UAV-Derived Map by Jozdani, Shahab, Chen, Dongmei, Chen, Wenjun, Leblanc, Sylvain G., Prévost, Christian, Lovitt, Julie, He, Liming, Johnson, Brian A.

“…Lichen is an important food source for caribou in Canada. Lichen mapping using remote sensing (RS) images could be a challenging task, however, as lichens…”
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Methodology comparison for canopy structure parameters extraction from digital hemispherical photography in boreal forests by Leblanc, Sylvain G., Chen, Jing M., Fernandes, Richard, Deering, Donald W., Conley, Alexis

“…The retrieval of canopy architectural parameters using off-the-shelf digital cameras with fish-eye lens is investigated. The technique used takes advantage of…”
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Elevation-Dependent Changes to Plant Phenology in Canada’s Arctic Detected Using Long-Term Satellite Observations by Chen, Wenjun, White, Lori, Leblanc, Sylvain G., Latifovic, Rasim, Olthof, Ian

“…Arctic temperatures have increased at almost twice the global average rate since the industrial revolution. Some studies also reported a further amplified rate…”
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Evaluating Image Normalization via GANs for Environmental Mapping: A Case Study of Lichen Mapping Using High-Resolution Satellite Imagery by Jozdani, Shahab, Chen, Dongmei, Chen, Wenjun, Leblanc, Sylvain G., Lovitt, Julie, He, Liming, Fraser, Robert H., Johnson, Brian Alan

“…Illumination variations in non-atmospherically corrected high-resolution satellite (HRS) images acquired at different dates/times/locations pose a major…”
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Leveraging AI to Estimate Caribou Lichen in UAV Orthomosaics from Ground Photo Datasets by Richardson, Galen, Leblanc, Sylvain G., Lovitt, Julie, Rajaratnam, Krishan, Chen, Wenjun

“…Relating ground photographs to UAV orthomosaics is a key linkage required for accurate multi-scaled lichen mapping. Conventional methods of multi-scaled lichen…”
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Correction to: Tempo-spatial patterns of PM2.5 measured using a portable particulate monitor around a mine complex in Canada’s Arctic by Chen, Wenjun, Leblanc, Sylvain G., White, H. Peter, Patenaude, Andrea, Clark, Karin, Croft, Bruno, Pellissey, Jody S., Meinert, Laura, Boulanger, John, Gunn, Anne

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Tempo-spatial patterns of PM2.5 measured using a portable particulate monitor around a mine complex in Canada’s Arctic by Chen, Wenjun, Leblanc, Sylvain G., White, Peter H., Patenaude, Andrea, Clark, Karin, Croft, Bruno, Pellissey, Jody S., Meinert, Laura, Boulanger, John, Gunn, Anne

“…Mining activities in Canada’s pristine Arctic (e.g., driving on unpacked roads, blasts, rock grinding, diesel combustion, and garbage incineration) could add…”
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Monitoring snow depth change across a range of landscapes with ephemeral snowpacks using structure from motion applied to lightweight unmanned aerial vehicle videos by Fernandes, Richard, Prevost, Christian, Canisius, Francis, Leblanc, Sylvain G, Maloley, Matt, Oakes, Sarah, Holman, Kiyomi, Knudby, Anders

“…Differencing of digital surface models derived from structure from motion (SfM) processing of airborne imagery has been used to produce snow depth (SD) maps…”
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Towards precise drone-based measurement of elevation change in permafrost terrain experiencing thaw and thermokarst by Fraser, Robert H, Leblanc, Sylvain G, Prevost, Christian, van der Sluijs, Jurjen

“…Measuring ground elevation changes plays a crucial role in several environmental applications. For instance, permafrost soils undergo seasonal active layer…”
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Using drone mapping to evaluate error of plot-based field surveys and its effects on moderate spatial resolution remote sensing retrieval of lichen cover by Pouliot, Darren, Mao, Mao, Fraser, Robert H., Kennedy, Blair, Leblanc, Sylvain G., He, Liming, Chen, Wenjun

“…Effective plot-based field sampling involves a trade-off between implementation efficiency and sample error. Optimal field sampling therefore requires…”
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Impacts of climate-driven habitat change on the peak calving date of the Bathurst caribou in Arctic Canada by Chen, Wenjun, Adamczewski, Jan Z., White, Lori, Croft, Bruno, Gunn, Anne, Football, Adeline, Leblanc, Sylvain G., Russell, Donald E., Tracz, Boyan

“…Since mid-1980’s, the population of the Bathurst barren ground caribou ( Rangifer tarandus ) in Canada’s Arctic has declined by 93%. In order to develop and…”
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Post-wildfire boreal forest vegetation cover change mapping via information fusion for secondary disaster risk assessments by Zhang, Ying, Lovitt, Julie, Fortin, Maxim, Fang, Haoyu, Leblanc, Sylvain G., Canisius, Francis

“…•A robust processing framework including information fusion for generation of post-wildfire vegetation cover change map has been proposed and tested with the…”
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Leaf area index mapping in northern Canada by Abuelgasim, Abdelgadir A., Leblanc, Sylvain G.

“…Leaf area index (LAI) is an important structural vegetation parameter that is commonly derived from remotely sensed data. It has been used as a reliable…”
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CoverPy: Automated estimates of plant area index, vegetation cover, crown cover, crown porosity, and uncertainties from digital cover photography in Python by Brown, Luke A., Leblanc, Sylvain G.

“…Implemented in Python, CoverPy enables automated estimation of plant area index (PAI), the fraction of vegetation cover (FCOVER), crown cover (CC), and crown…”
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Multi-angular optical remote sensing for assessing vegetation structure and carbon absorption by Chen, Jing M., Liu, Jane, Leblanc, Sylvain G., Lacaze, Roselyne, Roujean, Jean-Louis

“…The utility of multi-angle optical remote sensing for terrestrial carbon cycle estimation is demonstrated through theoretical development, POLDER data…”
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A practical scheme for correcting multiple scattering effects on optical LAI measurements by Leblanc, Sylvain G., Chen, Jing M.

“…Accurate and fast non-destructive measurements of leaf area index (LAI) of plant canopies are essential to environmental applications such as water and carbon…”
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