MDPI’s Post

Any technical development in any field integrate with gis affect directly in gis lastly Technical development in surveying devices and their accuracy helped the system obtain more accurate data sources this Point clouds are datasets that represent objects or space. These points represent the X, Y, and Z geometric coordinates of a single point on an underlying sampled surface. Point clouds are a means of collating a large number of single spatial measurements into a dataset that can then represent a whole. When colour information is present, the point cloud becomes 4D. Point clouds are most commonly generated using 3D laser scanners and LiDAR (light detection and ranging) technology and techniques. Here, each point represents a single laser scan measurement. These scans are then stitched together, creating a complete capture of a scene, using a process called ‘registration’.

Digital Tunnel Inspections - 3 main benefits that will change your perception about taking a Digital Approach to Tunnel Mapping by Josephine Morgenroth. 🗣 [From a case study of an active tunnel operation] Offering streamlined mapping, enhanced accuracy, and unparalleled efficiency, is crucial for optimizing safety and productivity in tunnel infrastructure management! ❌ Tired of the time-consuming collection and monitoring processes of concrete tunnel lining inspections? Here are 3 main benefits of taking a digital approach to mapping, especially with RockMass Eon: 1️⃣ Simplified Mapping Process: RockMass Eon streamlines the mapping process, making it intuitive and user-friendly. With its tablet-based solution, say goodbye to cumbersome terrestrial lidar scanners. Plus, its portability means you can take it anywhere along the tunnel for seamless data collection. 2️⃣ Enhanced Data Accuracy: Say hello to precision! Digital mapping technology enables the collection of a higher number of data points, resulting in more accurate and detailed output. With RockMass Eon, you get true colour point clouds and vectorized annotations, ensuring no detail goes unnoticed. 3️⃣ Improved Efficiency: Time is irreplaceable, right? With RockMass Eon, you'll breeze through inspections faster than ever before. Annotate and characterize features of interest digitally, and enjoy high-resolution imaging of crack formation and progression. Efficiency at its finest! That's why we're introducing a game-changing solution that revolutionizes tunnel mapping. RockMass Eon is your partner for faster, more accurate, and more efficient inspections. Capture. Map. Upload. 🔁 "RockMass Eon it's as easy as it looks." We recently showcased our prowess at the Ashbridges Bay Treatment Plant Outfall (ABTPO) project owned by the City of Toronto. Our case study highlights how RockMass is advancing toward machine learning development, using our data to train algorithms and map the concrete liner during construction. ➡️ Get access to the groundbreaking Case Study results: https://lnkd.in/efD_wfzg #TunnelInspections #DigitalMapping #RockMassEon #Innovation #MachineLearning 🛠️🔍

Drone-based remote sensing has evolved rapidly in recent years. Miniaturized hyperspectral imaging sensors are becoming more common as they provide more abundant information of the object compared to traditional cameras. Reflectance is a physically defined object property and therefore often preferred output of the remote sensing data capture to be used in the further processes. Absolute calibration of the sensor provides a possibility for physical modelling of the imaging process and enables efficient procedures for reflectance correction. Our objective is to develop a method for direct reflectance measurements for drone-based remote sensing. It is based on an imaging spectrometer and irradiance spectrometer. This approach is highly attractive for many practical applications as it does not require in situ reflectance panels for converting the sensor radiance to ground reflectance factors. We performed SI-traceable spectral and radiance calibration of a tuneable Fabry-Pérot Interferometer -based (FPI) hyperspectral camera at the National Physical Laboratory NPL (Teddington, UK). The camera represents novel technology by collecting 2D format hyperspectral image cubes using time sequential spectral scanning principle. The radiance accuracy of different channels varied between ±4% when evaluated using independent test data, and linearity of the camera response was on average 0.9994. The spectral response calibration showed side peaks on several channels that were due to the multiple orders of interference of the FPI. The drone-based direct reflectance measurement system showed promising results with imagery collected over Wytham Forest (Oxford,UK). #SpecialistDroneServices #SmartFarming #SustainableAg #Canada #exports #best_clip #technology #Iranian_resident_in_Canada #new #farm #farminghashtag #farmerhashtag #farmercanadahashtag #Agriculturaldronehashtag #Agriculturalhashtag #drone

Explore 30 years of groundbreaking surveying innovations in our latest blog! Discover how we've shaped the industry, from pioneering handheld laser distance meters to revolutionising laser scanning technology. Whether you're a surveying professional, tech enthusiast, or simply curious about the evolution of geospatial technology, this blog promises an insightful journey into the DNA of surveying excellence. #SurveyingInnovation #LeicaGeosystems #GeospatialEvolution #PureSurveying Read more: https://lnkd.in/dTnaQi-Y

In these days, the AIAA SCITECH 2024 Forum published a paper entitled as “Characterization of Saturated Absorption Lines in Rubidium for Use as an Actively Controlled Atomic Filter“ Abstract Precise wind velocity measurements are of interest for a variety of applications including weather forecasting and detection of clean air turbulence and wind shear. This work investigates a concept known as spectral hole burning to create an actively tunable atomic vapor filter in order to improve the resolution of LIDAR wind velocity profiling. By adjusting the frequency and intensity of a pump beam in an alkali vapor cell, steep slopes in the transmission profile may be used to monitor shifts in frequency of a probe beam. A three-level atomic model to simulate the spectral hole is described and validated experimentally through pump-probe spectroscopy. The model then optimizes parameters including cell length, cell temperature, pump intensity and pump frequency to find the steepest transmission slope obtainable. At this location, frequency resolutions of 0.69 MHz are predicted per 1% change in transmission, corresponding to a 0.27 m/s velocity sensitivity. From this information, the feasibility and limitations of using spectral hole burning as a controllable atomic filter for LIDAR velocimetry measurements are discussed. This Figure shows the possible mechanisms for atoms to transfer between states that are considered in the model.

This is a great post that comprehensively reviews the 360 mobile mapping camera hardware field in 2024. It would be great to add a table of standard features alongside each product, so you can compare at a glance like for like. If I had any wishes for new hardware, it would be for onboard hot-swappable SSD storage, integrated RTK GPS and IMU, live stitching/blurring and a complete route planning/navigation management system with automated start/stop triggering to avoid capture of redundant/duplicate data.

Hello Connections! Title : Surveying Surveying or land surveying is the technique, profession, art, and science of determining the terrestrial two-dimensional or three-dimensional positions of points and the distances and angles between them. Surveyors work with elements of geodesy, geometry, trigonometry, regression analysis, physics, engineering, metrology, programming languages, and the law. They use equipment, such as total stations, robotic total stations, theodolites, GNSS receivers, retroreflectors, 3D scanners, LiDAR sensors, radios, inclinometer, handheld tablets, optical and digital levels, subsurface locators, drones, GIS, and surveying software. #snsinstitutions #snsdesignthinkers #designthinking

𝗟𝗶𝗗𝗔𝗥 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗠𝗮𝗿𝗸𝗲𝘁 𝟮𝟬𝟮𝟰-𝟮𝟬𝟯𝟬. 𝗚𝗹𝗼𝗯𝗮𝗹 𝗥𝗲𝘀𝗲𝗮𝗿𝗰𝗵 𝗥𝗲𝗽𝗼𝗿𝘁 𝗥𝗲𝗾𝘂𝗲𝘀𝘁 𝗳𝗼𝗿 𝗦𝗮𝗺𝗽𝗹𝗲: https://lnkd.in/daKeg7qq The report offers an extensive overview of the LiDAR Software industry chain, encompassing developments in Airborne (including Simulation Software and Mapping Software) and Terrestrial segments. It examines market statuses in both developed and developing regions, spotlighting key enterprises. Cutting-edge technologies, patents, applications, and market trends are thoroughly analyzed. Regional assessments highlight North America and Europe's steady growth, propelled by government initiatives and rising consumer awareness, while Asia-Pacific, particularly China, leads globally due to strong domestic demand, supportive policies, and a robust manufacturing base. With a focus on holistic industry insights and detailed stakeholder analysis, the report delves into market dynamics, trends, challenges, and opportunities within the LiDAR Software sector. 𝗧𝗼 𝗞𝗻𝗼𝘄 𝗗𝗲𝗺𝗮𝗻𝗱 𝗼𝗳 𝗟𝗶𝗗𝗔𝗥 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗠𝗮𝗿𝗸𝗲𝘁. 𝗥𝗲𝗾𝘂𝗲𝘀𝘁 𝗳𝗼𝗿 𝗦𝗮𝗺𝗽𝗹𝗲 𝗣𝗗𝗙: https://lnkd.in/daKeg7qq *𝗕𝘆 𝗧𝘆𝗽𝗲: Simulation Software, Mapping Software, Processing Software *𝗕𝘆 𝗔𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻: Airborne, Terrestrial *𝗕𝘆 𝗥𝗲𝗴𝗶𝗼𝗻: North America, Europe, Asia-Pacific, South America, Middle East & Africa *𝗕𝘆 𝗞𝗲𝘆 𝗣𝗹𝗮𝘆𝗲𝗿𝘀: Routescene, GeoCue, Velodyne Lidar, CHC Navigation | CHCNAV, Leica Biosystems, DIELMO 3D, Terrasolid, Geo-Plus, YellowScan, LeddarTech- Automotive Software: Low-Level Sensor Fusion & Perception, Blickfeld, Teledyne Geospatial, LSLiDAR #LiDAR #SoftwareDevelopment #Geospatial #Mapping #RemoteSensing #DataVisualization #GIS #3DMapping #PointCloud #TechInnovation #DataAnalysis #AIinLiDAR #UrbanPlanning #EnvironmentalMonitoring #AutonomousVehicles #DigitalTwin #Infrastructure #Surveying #ARMapping #LiDARTechnology

Huge congratulations to the winner of the 2023 Micrograph Award, Clément Majorel (Université Côte d'Azur)! Using the RAITH PIONEER he created this amazing application work, which he describes as follows: The figure shows a 250µm×250µm metasurface made up of GaN nanopillars of height 1µm distributed on a square grid with a period of 250nm. The metasurface is an assembly of hexagonal metalenses of side 11.5µm. This array has a filling factor of 100% (without discontinuities). The fabricated pattern is a 250µm×250µm metasurface composed of an assembly of hexagonal metalenses (11.5µm side) designed to perform directional detection. Angular information is retrieved by combining this array with a detection matrix. In this case, each lens has a unique phase profile that allows it to observe space in a unique and specific direction. If the incoming light is included in the solid angle of a metalens, the latter rectifies the incident direction to focus the light at its center, so as to activate its associated detector. Thus, by knowing which detector is activated, we can determine where the light is coming from. This device can be used in LiDAR (light detection and ranging) experiments to obtain 3D information about the position of objects. Have you got some great work to show as well? Registration for the Micrograph Award 2024 is open already: https://ow.ly/sIWq50QF5Ul

Which camera stands out for #surveying and #geospatial data collection this year? Check out our comprehensive guide to discover the latest advancements, detailed reviews, and expert insights. We delve into key features like high-resolution imaging, system integration, global shutters, and robust frames. This article is a valuable resource for governments, municipalities, logistics, and real estate professionals looking to understand how these devices are transforming the #mobilemapping landscape. Join us in examining the pros and cons of each camera and see how they meet the critical demands of effective mobile mapping in a dynamic environment. What are your thoughts on these innovations? Let's discuss the future of navigation and #mapping! 🌐 #GIS https://bit.ly/496Kzgk