Las texturas PBR hacen referencia a una técnica de renderizado que permite calcular la luz de una escena en 3D, en base a la vida real.
Todavía no se ha conseguido un realismo al 100%, pero esta técnica permite calcular cómo se refleja la luz y las sombras que producen los objetos, de una manera más realista que en el pasado.
Estas texturas permiten simplificar el trabajo al aplicar materiales y se pueden usar en la mayoría de plataformas. Las texturas PBR dan información sobre el nivel de detalle, el color del material, el desplazamiento de los polígonos, la cantidad de reflexión, el detalle de la superficie y otro tipo de información como transparencia, refracción, curvatura, posición de los polígonos, etc.
En este video de Animación 3D se muestran las posibilidades de ésta técnica en combinación con las imágenes captadas mediante UAVs. Más concretamente, captadas por un Dji Phantom 3.
Topographic and geomorphological surveys of coastal areas usually require the aerial mapping of long and narrow sections of littoral.
The georeferencing of photogrammetric models is generally based on the signalization and survey of GCPs (Ground Control Points) which are very time-consuming tasks.
Direct georeferencing with high camera location accuracy due to on-board multi-frequency Global Navigation Satellite System(GNSS) receivers can limit the need for GCPs.
Recently, DJI has made available the Phantom 4 Real-Time Kinematic(RTK)(DJI-P4RTK) which combines the versatility and the ease of use of previous DJIPhantom models with the advantages of a multi-frequency on-board GNSS receiver.
In this paper, the authors have investigated the accuracy of both photogrammetric models and Digital Terrain Models (DTMs) generated in Agisoft Metashape from two different image datasets (nadiral and oblique) acquired by a DJI-P4RTK.
Camera locations were computed with the Post-Processing Kinematic (PPK) of the Receiver Independent Exchange Format (RINEX) file recorded by the aircraft during flight missions. A Continuously Operating Reference Station (CORS) located at a 15 km distance from the site was used for this task.
The results highlighted that the oblique dataset produced very similar results, with GCPs (3D RMSE = 0.025 m) and without (3D RMSE = 0.028 m), while the nadiral dataset was affected more by the position and number of the GCPs (3D RMSE from 0.034 to 0.075 m).
The introduction of a few oblique images into the nadiral dataset without any GCP improved the vertical accuracy of the model (Up RMSE from 0.052 to 0.025 m) and can represent a solution to speed up the image acquisition of nadiral datasets for PPK with the DJI-P4RTK and no GCPs.
Moreover, the results of this research are compared to those obtained in RTK mode for the same datasets. The novelty of this research is the combination of a multitude of aspects regarding the DJI Phantom 4 RTK aircraft and the subsequent data processing strategies for assessing the quality of photogrammetric models, DTMs, and cross-section profiles.
DroneDeploy, a drone software company with the largest drone data platform in the world, today announced the launch of Thermal Live Map, a real-time mobile mapping solution which delivers insights only thermal imagery can reveal.
A first-of-its-kind feature, Thermal Live Map visualizes temperature range variability and creates instant thermal maps for quick, data-guided decisions on the job site. DroneDeploy is the leading cloud software platform for commercial drones, and is making the power of aerial data accessible and productive for everyone.
Trusted by leading brands globally, DroneDeploy is transforming the way businesses leverage UAVs and aerial data across industries, including agriculture, construction, mining, inspection, and surveying. Simple by design, DroneDeploy enables professional-grade imagery and analysis, 3D modeling and more from any UAV on any device.
The new solution is particularly valuable for firefighting, giving firefighters the ability to see through smoke and keep track of their personnel in large fire scenes. Thermal Live Map also helps locate precisely where the fire is hottest and provides definitive confirmation the fire is extinguished in specific areas. Thermal Live Map allows first responders to view hundreds of acres in minutes —day or night— penetrating hard-to-reach and hard-to-see terrain where missing or injured persons may be awaiting rescue.
Thermal Live Map also helps growers spot field stress in real time. They identify irrigation issues, detect ripeness, and analyze plant health early to solve problem areas and avoid lost harvests. "Thermal mapping is one of the most common and difficult requests from our customers to date, but the reward equals the challenge," said Mike Winn, CEO of DroneDeploy. "Live Map makes thermal insights more accessible while increasing safety and efficiency on job sites."
The new solution uses the latest advancements in edge computing to generate thermal drone maps locally on iOS devices as a DJI drone flies.
In this report, the firm Automotive and Transport Market Research Reportsprojects that the yearly value of AM manufactured parts in the UAV industry to reach $1.9 billion, driving over $400 million in yearly sales of Additive Fabrication equipment, software, materials and services.
The UAV Additive Manufacturing report also provides information on which companies and institutions in the space infrastructure industry are using Additive Fabrication today, with relevant case studies. Key firms in the UAV AM segment include: Boeing, CRP Group, DJI, EHANG, EOS, General Atomics, HP, Hubsan, Lockheed Martin,Northrop Grumman, Oxford Performance Materials (OPM), Parrot, Ricoh, Stratasys, 3D Systems and 3DR.
The report includes an in-depth analysis of the material used for UAV AM prototyping and production, which takes into consideration both high performance polymers and metals as well as composites, ceramics and technologies for direct 3D printing of electronics. This report quantifies the projected value of additive manufactured parts and identifies the most commercially important technologies, materials and applications in 3D printing of UAV parts for prototyping, production and replacement.
The analysis includes ten-year forecasts of the materials, hardware, software and AM services, both in terms of demand and revenues. Granular geographic and part type information completes this first ever accurate study of the potential for AM in the rapidly evolving UAV industry, including defense, commercial and consumer applications.
In this report, the firm Research and Markets projects that the yearly value of Additive Manufacturing (AM) in the UAV (Unmanned Aerial Vehicle) industry to reach $1.9 billion, driving over $400 million in yearly sales of AM equipment, software, materials and services.
The Drone AM report also provides information on which companies and institutions in the space infrastructure industry are using additive manufacturing today, with relevant case studies. Key firms in the drone AM segment include: Boeing, CRP Group, DJI, EHANG, EOS, General Atomics, HP, Hubsan, Lockheed Martin, Northrop Grumman, Oxford Performance Materials (OPM), Parrot, Ricoh, Stratasys, 3D Systems and 3DR.
The report includes an in-depth analysis of the materials used for drone AM prototyping and production, which takes into consideration both high performance polymers and metals as well as composites, ceramics and technologies for direct 3D printing of electronics.
Some of the UAVs being shown at this week's Consumer Electronics Show in Las Vegas include items that are for play, personal photography and other uses which could lead to a market for the products.
French-based technology firm Parrot unveiled its "mini drone" toy which can be controlled from a smartphone. "We have civilian drones and now we have toy drones," Parrot's Nicolas Haftermeyer told AFP, describing the Parrot drone as a device designed for teenagers who enjoy a challenge of using a tablet to drive the device. While one division of the French firm makes fixed-wing drones for mapping and other purposes, this devices, which can be held in one's hand, are purely designed for play, says Haftermeyer.
DJI's Michael Perry said the group has established "a platform for any user to create amazing videos from the skies."While most of the usage so far has been for personal photography and professional cinematographers, Perry said DJI devices were also used for search-and-rescue operations in the Philippines after Typhoon Haiyan. The company offered a test flight of its Phantom 2 Vision which it calls "the world's first consumer quadcopter with a built-in high-performance camera." The device can fly 25 minutes and send images and location back to a smartphone which directs navigation. It also is programmed to return home if the user loses the location. DJI says the device can revolutionize photography by getting to places normally inaccessible, like the middle of the Grand Canyon, or close to sporting events. But there could be other uses, such as for disaster relief. DJI has three other flying devices including one designed for professional cinematography and photography.
