YellowScan’s Post

So we're technically a couple days late on #WorldLidarDay, but every day is lidar day at #KGS. #Lidar (light detection and ranging) is a type of laser scanning that allows geoscientists to make incredibly detailed 3D computer representations of Earth's surface, even in heavily forested areas. KGS researchers use statewide lidar data to identify landslides and sinkholes, develop geohazard susceptibility maps, improve flood modeling, advance resilience planning, and map surface expressions of faults in the New Madrid seismic zone. https://lnkd.in/e8gH-G9g? #geology #geoscience

The volcano on Iceland's Reykjanes peninsula erupted again last week, again threatening the town of Grindavík. Drones captured amazing footage of a wall of erupting lava. We've been exploring how satellite imagery can help understand the scale of these events. Using Landsat data, we used different spectral filters to visualise the eruption in March and you can learn more about our map here: https://lnkd.in/eCZpwTQx #cartography #ArcGIS #GIS

A new machine learning system can create height maps of urban environments from a single synthetic aperture radar (SAR) image, potentially accelerating disaster planning and response. #geography #geographyteacher #map https://lnkd.in/erRb2Sx6

Orbits play a crucial role in capturing telecommunication towers for a number of reasons: 1. Comprehensive Coverage: Orbits ensure that all aspects of the tower are covered from multiple angles. This is essential for creating a detailed and accurate 3D model. By circling the tower at different heights and distances, you capture every component, from antennas and dishes to the tower structure itself. 2. Detail Capture: Close-up orbits (approximately 5 to 10 meters from the installation) are particularly important for capturing detailed features of the telecommunication towers. These details are necessary for inspection purposes, allowing for the identification of issues such as rust, structural integrity, and component placement without the need for physical tower climbs. 3. Overlap for Accuracy: The guideline recommends a minimum recommended overlap of 80% for all orbits. This high overlap is critical for photogrammetry software to accurately match points between images, which is essential for generating a detailed and accurate 3D model. The overlap ensures that enough common points are captured from different angles to construct a precise model. 4. Efficient Data Collection: Performing orbits is an efficient way to systematically cover the entire tower with the necessary detail and overlap. This method saves time and ensures quality data collection by systematically covering all necessary angles with an organized approach. 5. Versatility and Adaptability: Orbits can be adjusted based on the specific requirements of the tower and surrounding area. They offer flexibility in planning your flight path to ensure comprehensive coverage regardless of the tower's location and the complexity of its structure. In summary, orbits are essential for capturing telecommunication towers as they ensure comprehensive coverage, capture necessary details with high accuracy, and offer an efficient and flexible method for data collection. Following the best practices for orbit captures will significantly enhance the quality of the 3D models produced, making them invaluable tools for inspection, maintenance planning, and documentation. #ONE3D #AerialDataCollection #DataAccuracy #EnvironmentalMapping #PrecisionSurveying #digitaltwin #smartcity #3DCityModel #drone #dronepilot #dronemodelling #dronemapping #dronedatacapture #dronedeploy #djiterra #djidrones #photogrammetry #pointcloud #topography #cartography #terrain #precision #dronesurveying #infrastructures #inspection #mapping #photogrammetry #photogrammetrysoftware #innovation #technology

Archeologists discovered a huge network of ancient cities hidden in the Amazon rainforest using LiDAR (Light Detection And Ranging) Lasers penetrated the dense tree canopies and created 3D maps of a network of cities dating back 2,500 years Laser-based LiDAR technology has lots of fascinating uses from discovering ancient ruins, to scanning buildings and bridges for quality control, to helping self-driving cars navigate The LiDAR image of the Amazonian ruins I'm showing here is from the University of Exeter #LiDAR #Lasers #LaserOptics #Optics #OpticsAndPhotonics #Photonics #STTEM #Science #Archeology

🎉 The new YellowScan Navigator is here! YellowScan's newest and most innovative product, the Navigator is a bathymetry LiDAR system that enables shallow water terrain topography mapping as well as water surface capture. It is perfect for non-navigable areas (shallow to medium depth waters) and where the costs of using an aircraft for scanning would be too high. Specifications: ➡ Precision and accuracy: 3 cm, ➡ Maximum depth: 2 Secchi, ➡ Operating altitude: between 25 and 100 m, ➡ 44° scanning FOV, ➡ Autonomy of 40 minutes. Its applications are in the fields of coastal oceanography, safety of hydraulic structures, natural disasters, underwater archaeology, surface water hydrology, dredging and marine works, but it can equally well be used for different types of analysis in rivers and lakes. More details: https://lnkd.in/dHAk6Fru #LiDAR #bathymetry #YellowScan #laorizont #skylinedrones

SHANNON ENTROPY Shannon entropy is a fundamental Geographic Information Systems (GIS) concept that quantifies the uncertainty or information content within spatial datasets. In GIS applications, it is used to measure the randomness or disorder in the distribution of geographic phenomena. Includes its role in assessing spatial patterns, aiding in data classification for thematic mapping, supporting decision-making by highlighting areas of interest or potential risks, and its application in remote sensing for analyzing spectral diversity. Additionally, Shannon entropy is relevant in data compression techniques for efficient GIS storage and representation of large spatial datasets. #gis #map #arcgis #mapping #maps #cartography #geospatial #qgis #remotesensing #geography #esri #sig #gps #survey #a #topography #geografia #surveyor #mapas #surveying #drone #d #geomatics #geoprocessamento #folgore #geoinformatics #cartografia #carabinieri #uav #goi.

A highly recommended method for survey of rivers which are susceptible to flooding and in high risk position.

This technology is very interesting since LiDAR problem is penetrating water bodies. Although it has the ability to penetrate water, its range is very shallow. I am very curious and interested on how the mechanics of the LiDAR and how accurate the depth that it can produce.

🌟Underwater LiDAR:🌟 💡Underwater LiDAR is marine research and exploration by providing high-resolution 3D maps of underwater environments with high detail and accuracy. 🌟 Key Benefits of Underwater LiDAR: 💡1-Precision Mapping: Captures detailed 3D models of underwater landscapes and structures with high-level accuracy. 💡2-Enhanced Exploration: Enables scientists and researchers to study monitor changes over time, and discover hidden treasures with unparalleled clarity. 💡3-Efficient Surveys: Streamlines underwater surveys and inspections, reducing time and costs associated with traditional methods. 💡4-Archaeological Discoveries: Unveils submerged archaeological sites and artifacts, shedding light on our maritime history and cultural heritage. Video credit: Geospatial World #UnderwaterLiDAR #MarineExploration #OceanResearch #Innovation #Technology #MarineConservation #LiDAR #UnderwaterMapping