Jump to content
  • Chatbox

    You don't have permission to chat.
    Load More

    How to calculate percent cloud cover on satelite image

    foxy1989
    By foxy1989,
    Hello GIS Area,   I am a student at the specialty of photogrammetry and remote sensing, and as I got a task to calculate the percent coverage photos of clouds.  I tried to do this by a supervised classification unfortunately this is not efficient if anyone has any idea how to do this.    Photo from satellites WorldView-2 multispectral.  Available on the university ERDAS 2013, ArcGIS and eCognition.    Please help    Regards

    Creating a Time series NDVI map

    PROBERT
    By PROBERT,
    I would like to create a NDVI Time Series map? How do I do that? The one I probably would like to have similar like this http://proceedings.esri.com/library/userconf/proc02/pap0593/p05931.jpg I created many NDVI for each or several months from the year of 2002 to 2013?   1) Do I need to add monthly NDVI to create an output monthly NDVI file and then the next step is to take new output monthly NDVI to produce a new output one year file? (or)   2) Add all the NVDI from one year to generate a

    An OWA model example using arcmap

    am2
    By am2,
    Hi, I have a presentation about owa model and its impemention using arcmap..Can some one give me a tutorial or an  example with its data that I can use it in my presentation? Thanks a lot

    ArcGIS 10.2.2 set back system clock problem

    bambosma
    By bambosma,
    Hi,   I have change systems clocks time and ArcGIS 10.2.2 return the following massage:   License   The system clock has been set back more than 24 hours   Has any one faced the same problem and found a solution?   Thanks    

    Please test a new online GIS based on geoserver and openlayers

    openwebgis
    By openwebgis,
    For everyone who wishes to see a new open GIS called OpenWebGis and make comments and suggestions. It is a completely free project without advertising. After registration, if it is necessary, you can upload your data to be stored on the server OpenWebGis, but most of the calculations can be performed even if the data is not uploaded to the server (if it is not very bulky - about 10 thousand items in the layer). You can use the extensive mathematical functionality to calculate and analyze your da

Portal by DevFuse · Based on IP.Board Portal by IPS
  • Forum Statistics

    8.7k
    Total Topics
    43.4k
    Total Posts
  • Latest Posts

    • Sometimes you need to create a satellite navigation tracking device that communicates via a low-power mesh network. [Powerfeatherdev] was in just that situation, and they whipped up a particularly compact solution to do the job. As you might have guessed based on the name of its creator, this build is based around the ESP32-S3 PowerFeather board. The PowerFeather has the benefit of robust power management features, which makes it perfect for a power-sipping project that’s intended to run for a long time. It can even run on solar power and manage battery levels if so desired. The GPS and LoRa gear is all mounted on a secondary “wing” PCB that slots directly on to the PowerFeather like a Arduino shield or Raspberry Pi HAT. The whole assembly is barely larger than a AA battery. It’s basically a super-small GPS tracker that transmits over LoRa, while being optimized for maximum run time on limited power from a small lithium-ion cell. If you’re needing to do some long-duration, low-power tracking task for a project, this might be right up your alley. https://hackaday.com/2024/10/17/tiny-lora-gps-node-relies-on-esp32/
    • Multiple motors or servos are the norm for drones to achieve controllable flight, but a team from MARS LAB HKU was able to a 360° lidar scanning drone with full control on just a single motor and no additional actuators. Video after the break. The key to controllable flight is the swashplateless propeller design that we’ve seen a few times, but it always required a second propeller to counteract self-rotation. In this case, the team was able to make that self-rotation work so that they could achieve 360° scanning with a single fixed LIDAR sensor. Self-rotation still needs to be slowed, so this was done with four stationary vanes. The single rotor also means better efficiency compared to a multi-rotor with similar propeller disk area. The LIDAR comprises a full 50% of the drone’s weight and provides a conical FOV out to a range of 450m. All processing happens onboard the drone, with point cloud data being processed by a LIDAR-inertial odometry framework. This allows the drone to track and plan its flight path while also building a 3D map of an unknown environment. This means it would be extremely useful for indoor or underground environments where GPS or other positioning systems are not available. All the design files and code for the drone are up on GitHub, and most of the electronic components are off-the-shelf. This means you can build your own, and the expensive lidar sensor is not required to get it flying. This seems like a great platform for further experimentation, and getting usable video from a normal camera would be an interesting challenge.   Single Rotor Drone Spins For 360 Lidar Scanning | Hackaday
    • The fall update to Global Mapper includes numerous usability updates, processing improvements, and with Pro, beta access to the Global Mapper Insight and Learning Engine which contains deep learning-based image analysis tools. Global Mapper is a complete geospatial software solution. The Standard version excels at basic vector, raster, and terrain editing, with Global Mapper Pro expanding the toolset to support drone-collected image processing, point cloud classification and extraction, and many more advanced image and terrain analysis options. Version 26.0 of Global Mapper Standard focuses on ease-of-use updates to improve the experience and efficiency of the software. A Global Search acts as a toolbox to locate any tool within the program, and a source search in the online data streaming tool makes it easier to bring online data into the application. Updates for working with 3D data include construction site planning to keep all edited terrain for a flattened site within a selected area and the ability to finely adjust the vertex position of 3D lines in reference to terrain in the Path Profile tool. Perhaps the largest addition to Global Mapper Pro v26.0 is the availability of the new Insight and Learning Engine which provides deep learning-based image analysis. Available with Global Mapper Pro for a limited time for users to test and explore, users can leverage built-in models for building extraction, vehicle detection, or land cover classification. These models can even be fine-tuned with iterative training to optimize the analysis for the data area.
    • Responding to the escalating threats from climate change, biodiversity loss, pollution and extreme weather and the need to take action to address these threats, this forward-looking strategy outlines a bold vision for Earth science through to 2040. By leveraging advanced satellite-based monitoring of our planet, ESA aims to provide critical data and knowledge to guide action and policy for a more sustainable future. ESA’s Director of Earth Observation Programmes, Simonetta Cheli, said, “As a space agency, it is our duty to harness the unique power of Earth observing technology to inform the critical decisions that will shape our future. “Our new Earth Observation Science Strategy underscores a science-first approach where satellite technology provides data that contribute to our collective understanding of the Earth system as a whole, so that solutions can be found to address global environmental challenges.” “The choices we make today help create a more sustainable world and propel the transformation towards a resilient, thriving global society.” The new Science Strategy presents a bold and ambitious vision for the future of ESA’s Earth Observation Programmes. It shifts focus towards understanding the feedbacks and interconnections within the Earth system, rather than targeting specific Earth system domains.
  • Latest Topics

  • Recent Achievements

    • tehzoca earned a badge
      Week One Done
    • tehzoca earned a badge
      One Month Later
    • ganimedes00 earned a badge
      Week One Done
    • ganimedes00 earned a badge
      One Month Later
    • ganimedes00 earned a badge
      One Year In
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.

Disable-Adblock.png

 

If you enjoy our contents, support us by Disable ads Blocker or add GIS-area to your ads blocker whitelist