GPGRS
LightNews LightNews
gpgrs.bsky.social
GPGRS
@gpgrs.bsky.social
130 followers 810 following 67 posts
GPGRS
› Earth Observation & Spatial Science

╔═════════════╗
║● GIS G #GIS
║● Photogrammetry P #Photogrammetry
║● Geodesy G #Geodesy
║● Remote Sensing RS #RemoteSensing
╚═════════════╝
Posts Replies Media Videos
Pinned
gpgrs.bsky.social
GPGRS @gpgrs.bsky.social · Oct 16
Remote Sensing post & paper👇
This research explores the potential of using AI and mobile laser scanning data to automatically assess the productivity and growth potential of young forests.
#RemoteSensing
#DeepLearning
#LaserScanning
#MLS #Ecology
#AI #Forestry
#ForestEcology
#EnvironmentalMonitoring
skogrover.bsky.social SkogRover @skogrover.bsky.social · Oct 16
Can site index be determined using branch whorls detected by deep learning from very dense laser scanning data? 🌲

Check out our newly published paper to find out!

academic.oup.com/forestry/adv...
gpgrs.bsky.social
Geodesy post👇
#LandSurveying #SurveyLife #Surveyor #Geodesy #GIS #ControlPoint #Benchmark #Geomatics #Mapping #EO #30DayMapChallenge #Earthquake

Many thanks to
@pythonmaps.bsky.social
pythonmaps.bsky.social PythonMaps @pythonmaps.bsky.social · 13d
Day three of the #30DayMapChallenge - Polygons. This map shows the earths tectonic plates. I have overlayed all of the earthquakes with a magnitude greater than 4.0 over the last 20 years, coloured according to their magnitude (blue (smallest) - red (largest).
November 5, 2025 at 11:15 AM
gpgrs.bsky.social
They are cute but necessary for forest health and ecosystems ...
🍄🦤🌐🍁
#RemoteSensing #EnvironmentalMonitoring #PlanetScope #EO #SatelliteImagery #Forestry #GIS #Ecosystem #Ecology
yardgonewild.bsky.social Yard Gone Wild @yardgonewild.bsky.social · 13d
A lone Chorus Frog was calling this morning… maybe the first this Squirrel youngster ever heard😄
November 4, 2025 at 5:43 PM
gpgrs.bsky.social
Remote Sensing post👇
An interesting paper on optimizing the EVI (Enhanced Vegetation Index). 🌐🍁
#RemoteSensing #EnvironmentalMonitoring #PlanetScope #EO #SatelliteImagery #Forestry #GIS #EVI #VegetationIndex #NDVI #optimization

Many thanks to
@rvnfxri.bsky.social
and
@sajadsayadi.bsky.social
sajadsayadi.bsky.social Sajad Sayadi @sajadsayadi.bsky.social · Sep 22
‪Sajad Sayadi‬
Classic NDVI can be fuzzy over bright soils and sparse canopies. We re-parameterized EVI with PSO for semi-arid mountains on Sentinel-2.
Have you tried scene-specific EVI tuning?

#RemoteSensing #EVI #Vegetation #Indexes #PSO #Sentinel2

See more details here👇 doi.org/10.1109/Metr...
NDVI (left) vs PSO-tuned EVI (right) in semi-arid mountains; the optimized EVI produced a wider vegetation value range, higher variance, and mapped more vegetation pixels than NDVI and the conventional EVI.
October 30, 2025 at 1:53 PM
gpgrs.bsky.social
Remote Sensing post👇
This review shows how PlanetScope's 3m, near-daily data is revolutionizing forest monitoring.
#RemoteSensing #EnvironmentalMonitoring #PlanetScope #EOb #SatelliteImagery #ClimateChange #Forestry #GIS

Many thanks to
@alexisachim.bsky.social
and
@irssubc.bsky.social
irssubc.bsky.social IRSS at UBC @irssubc.bsky.social · 26d
📣NEW PAPER 📣A review of PlanetScope CubeSats for forest monitoring

✍️: Shields, Coops, Achim (@alexisachim.bsky.social), Hamelin, Mulverhill

📖: Science of Remote Sensing

doi.org/10.1016/j.sr...

#planetScope #forestry #highresolution #nearrealtime #multispectral #IRSSlab #UBCForestry
October 29, 2025 at 10:37 AM
gpgrs.bsky.social
Remote Sensing post👇
Seeing the unseen: This paper uses AI and satellite data to simulate some of the ocean's interior properties.
#OceanScience #DataDriven #RemoteSensing
#DeepLearning #AI #EnvironmentalMonitoring

@agarciaespriu.bsky.social
@cgonharo.bsky.social
@aguilarf.bsky.social
October 28, 2025 at 7:24 AM
gpgrs.bsky.social
Photogrammetry Post👇

A really nice 3D model.

#Photogrammetry
#UAVPhotogrammetry
#DronePhotogrammetry
#CloserangePhotogrammetry
#LiDAR #LaserScanner #MLS #TLS
October 27, 2025 at 12:27 PM
gpgrs.bsky.social
Geodesy post👇
Check out these fascinating survey benchmarks! One of them is from 1941. Land surveying is always one of the coolest fields.
Thanks Julie.
#LandSurveying #SurveyLife
#Surveyor #Geodesy #GIS
#ControlPoint #Benchmark
#Geomatics #Mapping
julieelliott.bsky.social Julie Elliott @julieelliott.bsky.social · Oct 4
For #FieldworkFriday, some of the benchmarks I've surveyed over the past few weeks. Some are more challenging to use than others, but they're all interesting. #geodesy ⚒️🧪
Brass disk with a circle in the center. Inside the circle is a line with a punchmark/divot in the center. In concentric circles around the center circle are inscriptions: "4240T 2000 For Info Contact Director Washington DC National Ocean Service Bench Mark". Brass disk recessed into paving. A layer of mud and moss had to be removed to find it. There is a circle in the center of the disk with two lines dividing the circle into quarters. Around the outer edge of the benchmark are the words "Z22A 1994 National Ocean Service". A brass disk sites in rock. In the middle of the disk is a triangle with a center divot. At the top of the Triangle, it says TSINA EASTBASE. At the bottom, it gives the year as 1941. Around the edge of the benchmark are the words U.S. Coast & Geodetic Survey Triangulation Station.
October 16, 2025 at 1:37 PM
gpgrs.bsky.social
Remote Sensing post & paper👇
This research explores the potential of using AI and mobile laser scanning data to automatically assess the productivity and growth potential of young forests.
#RemoteSensing
#DeepLearning
#LaserScanning
#MLS #Ecology
#AI #Forestry
#ForestEcology
#EnvironmentalMonitoring
skogrover.bsky.social SkogRover @skogrover.bsky.social · Oct 16
Can site index be determined using branch whorls detected by deep learning from very dense laser scanning data? 🌲

Check out our newly published paper to find out!

academic.oup.com/forestry/adv...
October 16, 2025 at 12:14 PM
gpgrs.bsky.social
Remote Sensing & GIS Post👇

A powerful, unsupervised approach for discovering any significant change in a satellite time-series.
#GIS
#remotesensing
#ChangeDetection
#EnvironmentalMonitoring
#Forestry
#ClimateChange
#vegetationdynamics #SatelliteImagery #EarthObservation
October 13, 2025 at 1:43 PM
gpgrs.bsky.social
Photogrammetry Post👇

This is a fantastic visualization of the difference between a rolling and global shutter.

#Photogrammetry
#UAVPhotogrammetry
#DronePhotogrammetry
#CloserangePhotogrammetry
sajadsayadi.bsky.social Sajad Sayadi @sajadsayadi.bsky.social · Oct 13
No matter what camera you use to capture images, you need to understand how rolling shutter and global shutter work and what sets them apart.

#Photogrammetry #Imaging #Shutter #UAVphotogrammetry
#3DModeling #RemoteSensing #CameraTech
October 13, 2025 at 1:30 PM