@@ -91,9 +91,9 @@ training, snow-covered area map generation, AOI simplification, canopy-aware
9191post-processing of snow-covered area (SCA) time series, and validation against
9292airborne reference snow surveys. Sample data and a pre-trained model are
9393provided to demonstrate the library's functions. PlanetSCA requires users to
94- have an account with Planet Data Explorer (https://www.planet.com/explorer/ )
95- and an API key to utilize its search and download capabilities. Limited access
96- to free PlanetScope images is available at
94+ have an account with Planet Data Explorer (https://www.planet.com/explorer/ ) and
95+ an API key to utilize its search and download capabilities. Limited access to
96+ free PlanetScope images is available at
9797https://www.planet.com/industries/education-and-research/ .
9898
9999# Statement of Need
@@ -135,8 +135,8 @@ A persistent challenge in satellite-based snow detection is the obstruction of
135135the sensor's view by forest canopy, which can cause snow-covered pixels beneath
136136dense tree cover to be systematically misclassified as snow-free. PlanetSCA
137137addresses this through a ` post_process ` module that provides canopy-aware
138- spatial infilling of SCA predictions using a canopy height model (CHM).
139- Forested pixels classified as snow-free are reclassified as snow-covered when a
138+ spatial infilling of SCA predictions using a canopy height model (CHM). Forested
139+ pixels classified as snow-free are reclassified as snow-covered when a
140140sufficient fraction of their open-area neighbors are snow-covered, with
141141configurable kernel radius and threshold. The module further provides temporal
142142median filtering applied independently to forested and open pixels, nodata
@@ -145,9 +145,9 @@ day-since-disappearance (DSD) dates for characterizing snowmelt timing. A
145145complementary ` validate ` module supports quantitative evaluation of PlanetSCA
146146predictions against Airborne Snow Observatory (ASO) lidar-derived reference
147147data, computing standard binary classification metrics (precision, recall,
148- F1-score, accuracy, and Cohen's kappa) and producing a four-class
149- snow-by-canopy validation raster for stratified assessment of model performance
150- in forested versus open terrain.
148+ F1-score, accuracy, and Cohen's kappa) and producing a four-class snow-by-canopy
149+ validation raster for stratified assessment of model performance in forested
150+ versus open terrain.
151151
152152# Acknowledgements
153153
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