Tag: 3D models

  • Smart infrastructure depends on GIS

    Get ready! Here comes the boom.

    The physical and digital world are integrating. We are nearing the edge of the analog universe. Physical immersion is giving way to virtual immersion. It is the virtualization of products and services in the evolution of technology. Michael Saylor calls it the sixth wave of software engineering. We are moving away from externally experiencing data and are moving towards actively interfacing with data directly in virtual space.


    “You can Zoom anywhere at the speed of light and bend time and space.” — Michael Saylor


    The world of tomorrow is already here. We are waking up to it. The blips of information at the fringes are coming nearer. The horizons of time are as far as one can see into the future and the past. How far can you see? From wherever you are there are others who can see a little further. Look forward. Look back. Others are ahead and behind. They exist where time is most comfortable for them. Some take up positions living in the past. Some stake their place as far into the future as they are able. Look towards those early adopters. Ask them what they think. They see more clearly the blips of information out on the horizon.

    What are those blips? How will they impact the geospatial community? How can you position yourself to take advantage of the coming trends?

    America needs to go back to work and America’s infrastructure is old and in disrepair. In 2019, Congress introduced H.R.4687, the SMART Infrastructure Act, a $2 trillion bill but it never made it out of the House. However, that bill is being reintroduced. This time it will become a bill putting America back to work and its price tag will likely eclipse the previous bill. It will address infrastructure — all types of infrastructure: physical, data, cybersecurity, health, financial, transportation, energy, and communications. It will be a primary theme for the next two decades. Get ready! Change can happen fast and it’s about to accelerate.


    “The future happens slowly and then all at once.” — Kevin Kelly


    Rebuilding this infrastructure will require geospatial technologies. STEM has been the siren call for the past 30 years and for good reason. Those who heeded the call and invested their education into coding, engineering, data science, geospatial technologies, mathematics, artificial intelligence, and other STEM related fields are going to lead the coming workforce. Now is the time to get certified and establish your credentials.

    Take the case of architectural design and construction. It used to be blueprints drawn on light tables. That is how I learned to do it back in the 1970s. Then it all moved to computer aided design (CAD) drawings. Now, urban planners and architects create immersive 3D virtual reality (VR) visualizations. That is becoming standard practice.

    Image: teekid/iStock / Getty Images Plus/Getty Images
    Image: teekid/iStock / Getty Images Plus/Getty Images

    Project managers used to spend their day making their rounds walking the site ensuring the project was being built to specifications. However, that is changing. Soon, each worker’s safety glasses will have built-in augmented reality (AR). They will build their portion of a project exactly to plan. Project managers will connect with workers in the field and see the project they are working on progress in real-time while in their office on 3D models.

    When the project manager does walk the site he or she will be wearing augmented reality (AR) head-up displays and able to compare the physical construction to the digital model in real-time. Backhoe and excavator operators will grade to exact precision. Robots will be common at construction sites assisting operations and enhancing current capabilities. Unmanned aerial vehicles (UAV) will fly regular patterns over construction sites. Heavy-lift UAVs will supplement cranes for some operations. Subsurface structures, whether buried beneath the ground or behind a wall will be digitized with precise location data making future replacements and repairs swift and easy. The uses of geospatially dependent technologies will continue to grow. The construction worker of tomorrow will be very different than the one of today.

    Photo: Trimble
    Photo: Trimble

    The new infrastructure will be built with smart technologies and incorporate renewables and “green energy” initiatives with a responsible approach to sustainability; for example, roadways will have embedded peizo-electric crystals in the asphalt to generate electricity from passing vehicles. The electricity will charge batteries that will power smart sensors embedded in the street and provide power to street lights with sensors and 5G networks along the roadways. Excess power will transfer to other microgrids for use elsewhere. Energy will also come from capturing wind on top and along the sides of buildings, along roadways, and at tunnel exits and entrances. Thermocouples will capture heat and generate electricity.

    Solar power will be generated from panels, windows, films, and even paint surfaces. All of these sources together will feed into microgrids. Some of this renewable energy will convert water to hydrogen for fuel cells, and some will power carbon dioxide (CO2) converters to extract CO2 from the atmosphere and create synthetic fuels. In 2010, Sunexus submitted a geospatial study of the solar reforming process to the Office of Scientific & Technical Information (OSTI). The study showed that nearly 58% of industrial CO2 waste from power plants, cement plants, ethanol production, and natural gas processing could be converted to synthetic diesel fuel.

    Image: U.S. Office of Energy Efficiency and Renewable Energy
    Image: U.S. Office of Energy Efficiency and Renewable Energy

    Besides energy, other smart materials will be used such as small sensors that are geospatially sensitive nanodevices embedded in roads, bridges, tunnels, buildings and other structures. They are wirelessly connected to one another creating a 3D mesh network. These nanodevices continuously report their structural health. This 3D mesh network can detect vibrations passing through it that cause distortions in the mesh framework.

    Geospatial artificial intelligence (GeoAI) will profile devices based on their normal statistical ranges. If any data such as location, temperature, humidity, pressure, acoustics or health status exceed the device’s standard deviation the GeoAI will analyze surrounding nodes in the mesh network to depict patterns. Suspect events will immediately come to the attention of emergency services. These microdevices can provide early detection of cracks in a structure or deterioration of a surface protection layer.

    The use of these devices extends beyond structural monitoring. More broadly, they have societal applications too, such as for security purposes. When fitted with acoustic sensors they can detect sounds, and by geospatially analyzing the data from many thousands of devices the epic center of a noise event can immediately be located. Take for example a gun shot, fireworks, an explosion, or a vehicle accident. The increased acoustic signal would trigger the GeoAI monitoring the devices to plot a spatial analysis of the acoustic report. The map would alert area would flash red on the monitor at the control center and nearby cameras would zoom in on the location providing images and live video feeds all within moments of the triggering event. The analysts at the control center could immediately assess the situation and dispatch the proper response units.

    Embedded devices also serve as seismic sensors blanketing broad areas and are able to record surface vibrations moving through the mesh network. An earthquake would appear as a moving wave field along the network.

    Additionally, data from the mesh network can integrate with other devices. It can provide smartphones with precise location data. Imagine no longer standing on a street corner turning in circles trying to figure out which way to go. When connected with the mesh network and looking through AR glasses or the smartphone view screen the path will be illuminated. Autonomous vehicles will connect with the mesh network and have absolute positional accuracy and have awareness of other vehicles, bikes, and pedestrians ensuring a more safe and efficient experience for everyone.

    The mesh network can be used as a base layer for georeferencing the world. Notifications, warnings and requests for information can be sent to smartphones within an exact georeferenced location. Imagine being in your third-floor apartment sitting in your chair, listening to music on your headphones and reading an ebook. You are oblivious to the noise outside. An audible alert is sent to your phone and calls your attention. You look at your phone and a message is requesting information related to a possible gunshot at DD°MM’SS.sss N, DD°MM’SS.sss W. You click on the notification and a map opens up. You see it is right outside your window. You go to the window, look outside and see two people duck into a car. You watch as red tail lights drive away. You look back at the location on the street where the vehicle had been and a person is slumped over leaning against a stairwell.

    On your phone you press the red alert button on the map application triggering a distress signal and confirming the incident may have been a gunshot and someone has possibly been injured. Emergency services immediately dispatch. Others nearby received the same alert message because it was automatically generated and sent out to all phone numbers within the area defined by the geospatial acoustic solution. Surveillance cameras on the corner of buildings were also triggered by the alert and automatically focused on the origin of the noise. Images of the assailants were captured along with the license plate of the vehicle. As the vehicle drove away a network of surveillance cameras continued following it turn by turn until it was finally intercepted and the occupants apprehended.

    This world is nearer than it seems. The technologies are already here. Once the infrastructure bill is passed construction projects will begin and our physical world will begin to integrate with the digital world. The engineers design it. The construction workers and robots will build it. And it will be geospatial technologies holding it all together.


    William Tewelow works for the Federal Aviation Administration. He is a graduate of the FAA management fellowship program. He served on special assignment to the U.S. Department of Transportation leading a national strategic geospatial initiative for the White House Open Data Partnership. He is a Geographic Information Systems Professional (GISP) and a speaker for the Maryland STEMnet Scholar program. He was among the first in the nation to earn a Geospatial Specialist Certification from the U.S. Department of Labor while working at NASA Stennis Space Center. He has degrees in Geographic Information Technology, Intelligence Studies, and is completing a masters degree in Organizational Management. William is a 23 year veteran for the U.S. Navy serving as a Geospatial Specialist, Imagery Intelligence Specialist, a Naval Aviator, a Meteorologist, and a Tactical Oceanographer. He is married, enjoys writing and traveling. His favorite quote is, “A man’s mind changed by a new idea can never go back to its original dimension.” — Oliver Wendell Holmes

  • Cesium to collaborate with Smithsonian to stream high-resolution 3D models online

    Streaming 3D geospatial technology company Cesium will support the Smithsonian Institution by streaming 3D models of massive objects in its collection, such as the Space Shuttle Discovery. The models will be streamed over the internet in high resolution for the first time.

    The collaboration is part of the Smithsonian’s Open Access Initiative. Through the initiative, the Smithsonian will release about 2.8 million 2D and 3D images, public collections metadata, and institutional research data sets as Creative Commons (CCo) for any purpose, such as education, research, commercial endeavors, creative reuse, computational analysis, and innovative explorations.

    “The Smithsonian Open Access Initiative aligns perfectly with Cesium’s vision to make the world’s collection of data more useful and accessible,” said Cesium CEO Patrick Cozzi. “We are proud that our technology will give researchers, educators, and the public the ability to study 3D models in the Smithsonian’s collection in the highest resolution detail from anywhere in the world.”


    Cesium Stories enable 3D storytelling

    Cesium Stories enable creation and sharing of 3D geospatial presentations on the web, without requiring any writing of code. An intuitive interface enables story creation using Cesium’s 3D world terrain basemap, the user’s own 3D data, or a combination of multiple datasets, fused into interactive scenes. Learn more here.


    Making massive high-resolution 3D models shareable begins at the intersection of Cesium’s core competencies of computer graphics, 3D data and open standards. With Cesium, glTF models are converted to 3D Tiles, an open specification developed by the company and adopted by the Open Geospatial Consortium (“OGC”) to make sharing massive amounts of 3D data as simple as sending a link.

    Cesium develops, supports, and promotes open standards with organizations like the OGC and The Khronos Group to advance technology, encourage collaboration and fuel cross-disciplinary innovation.

    The Space Shuttle Discovery — on display at the James S. McDonnell Space Hangar at the National Air and Space Museum’s Steven F. Udvar-Hazy Center in Chantilly, Virginia — is one of the largest objects in the Smithsonian’s collection. It is more than 122 feet long and weighs more than 4.5 million pounds.

    Now, a shareable, high-resolution 3D rendering will enable anyone to rotate, zoom in, and study its details from anywhere in the world.

    Explore the 3D model at www.cesium.com/smithsonian.

  • How to use structure from motion to produce 3D models

    Structure from motion (SfM) is a photogrammetric range imaging technique for estimating three-dimensional structures from two-dimensional image sequences that may be coupled with local motion signals, according to Wikipedia, which I think is reasonably accurate in this case.

    Simply put, one can snap a series of photographs using the camera in your smartphone, unmanned aerial vehicle (UAV) or other photographic equipment and produce a 3D model using software that is built using the SfM technique.

    To assist you in capturing the photos on your smartphone to generate a 3D model, Autodesk has a free mobile app called 123D Catch. Using the app, you can create a 3D model of nearly any object you can imagine. Following is a one-minute YouTube video from Autodesk that succinctly shows the process of capturing photos using an iPhone camera with Autodesk’s free 123D Catch app and how to generate a 3D model.

    Today’s smartphone cameras offer incredible resolution. My Samsung Galaxy S7 has a 12-megapixel camera. The iPhone 7 offers the same resolution. Modern iPads have an 8-megapixel camera, which is fine for 3D modeling.

     

    So, think about this for a minute. What value can you derive from shooting images from your smartphone? If you need to know the volume of a pile of material (e.g. construction), your smartphone running the 123D Catch app can do it. The requirements are straight-forward:

    • You need to be able to walk completely around the pile and shoot many overlapping photos, filling the camera frame with the pile. Every surface you want modeled should be visible from at least four photos from different angles.
    • Avoid shooting featureless photos (e.g. walls, water or snow surfaces). Or, if a background is featureless, add a feature to the surface like a small target (similar to photogrammetry ground control targets but much smaller).
    • Avoid shooting reflective surfaces.
    • Don’t shoot moving objects (e.g. vehicles).
    • Try shooting in well-lit areas.

    Taking it a step further, the camera doesn’t have to be in your smartphone. You could use a camera mounted on a vehicle that could provide a different perspective. Something like a … drone! Yes, SfM-based software like Agisoft Photoscan allows drone pilots to exploit photographs shot from their aircraft.

    In the past few years, I’ve written a lot about drones and my adventures in using them. Following are a series of images as a result of one of my UAV flights. A total of 500 photos were shot at 80 percent overlap from my drone flying at 200 feet AGL (above ground level). The photos were imported and run through Agisoft Photoscan.

    The first screenshot (Figure 1) is a 2D view of the 3D model generated from processing 500 digital photos through SfM.

    sfm-2d-model
    Figure 1

    Figure 2 shows the camera location of each photo. Remember, the UAV was flying at a consistent altitude (200 feet AGL) and was taking photos with an 80 percent overlap.

    sfm-photo-locations
    Figure 2

    Figure 3 is an oblique view of the 3D model. If I wanted to improve the quality of the 3D model (e.g. the sides of the building), I would have flown the drone again in a flight pattern perpendicular to the first pattern. Note the pile of material at the lower part of the screen and to the right of the pond.

    sfm-oblique-3d-model
    Figure 3

    The final screenshot, Figure 4, is a zoomed in view of the pile of material.

    sfm-material
    Figure 4

    Since a 3D model has been created, clearly a DEM (digital elevation model) and DSM (digital surface model) can be generated, as well as associated 3D products like elevation contours and volume calculations.

    Enough of the drone talk.

    With your smartphone, you’ve got everything you need to create a 3D model of your children, your Christmas tree, your pet, your vehicle or other valued object. Give it a try. It won’t cost you anything but some of your time.

    Start by downloading the Autodesk 123D Catch app. You might want to view this six-minute video describing how to plan a shoot for best results.

    https://youtu.be/D7Torjkfec4

    To process the photos and create a 3D model, install the Autodesk ReMake free version.

    Once you’ve installed ReMake, take a look at this less than four-minute quick start for importing photos and processing them in ReMake.

    https://youtu.be/wRWo3r-woMI?list=PLUgaUX0Wfr-R1hXT9J1pTh6kKhUTwXLZR

    If you get a chance, post a 3D model you’ve created in the comments section below.

    Follow me on Twitter @GPSGIS_Eric

    Photos: Agisoft

  • Indra Provides Real Time Data to Google Earth 3D City Maps

    Geospatial Solutions’ and GPS World‘s Art Kalinski reports from eMerge Americas, held May 4-5 in Miami. Indra is a large Spanish firm in the Smart Cities program demonstrating its end to end solutions, including building 3D models overlaid on Google Earth.

  • CartoData Builds 3D Models from UAV Data

    Geospatial Solutions’ and GPS World‘s Art Kalinski reports from eMerge Americas, held May 4-5 in Miami. CartoData is a Mexican firm doing some very impressive end-to-end solutions including the use of Pix4D to build 3D models from UAV data. The company provides geographic information for public and private sectors, producing cartography and geomatics-related products and services.

  • Esri CityEngine 2015 Provides Advanced 3D City Design

    esri-cityengine-2015-provides-advanced-3d-city-design-lg
    Modern layer management and enhanced real-time shadows based on daytime and location are available in the latest release of CityEngine.

    The release of Esri CityEngine 2015 allows GIS professionals, architects, planners, and urban designers to create 3D city models faster and share them easily via ArcGIS Online. These new features open the use of 3D models for every day, real-world simulation, emergency response, urban planning, and entertainment scenarios.

    “CityEngine 2015 is faster, sports higher-quality visuals, and introduces an innovative and unique 3D design experience. The latter is possible with Procedural Handles, a novel user interface for the intuitive editing of 3D models. We worked very hard on this and are excited to release it,” said Pascal Mueller, director of the Esri R&D Center, Zurich AG.

    Companies like Esri partner SmarterBetterCities use CityEngine to help clients view and investigate building development proposals in a true 3D environment.

    “CityEngine provides decision makers with the opportunity to do more advanced planning than when they are using a typical CAD or spreadsheet system,” said Antje Kunze, CEO, SmarterBetterCities. “We are now able to help our clients better visualize rules and regulations and perform analytics that no one has been able to address in the past.”

    Advancements from user requests—including a modern editor for managing layers, real-time shadows based on daytime and location, faster data export, and improved publishing workflows—have been implemented. More information can be found in the release notes.

    “With CityEngine 2015, we made a huge step forward in user experience and speed, resulting in less coding and more designing,” said Dominik Tarolli, director of international business development for 3D geodesign at Esri.

    CityEngine 2015 is available for Windows, Mac, and Linux platforms. A free 30-day trial with full export capabilities can be downloaded at esri.com/cityengine.

    Esri-CityEngine-O
    Credit: Esri website.