What are the current applications of live 3D created by Inclined Photogrammetry surveys?

What is Inclined Photogrammetry?

Inclined photogrammetry is a flight platform carrying multiple sensors, simultaneously from vertical, inclined and other angles to collect ground image data, after data processing, to obtain accurate and complete location information and texture data of features.

Currently the more mainstream applications include the following aspects.

1, ancient building protection

For example, the protection of the ancient city wall in Xi'an. Through the drone close-up photogrammetry technology to obtain the image data of the ancient city wall and ancillary buildings, three-dimensional reconstruction of the ancient city wall and buildings, to achieve the digitalization of the ancient city wall and informatization, to help the management of the ancient city wall protection work.

2. Smart City

Using the vector range collected based on the 3D model, it realizes the dynamic tailoring of the 3D model and combines the vector information to logically monolithicize the 3D model, meets the requirements of refinement and realizes the comprehensive management of various types of natural resources information such as real 3D data, high-precision topographic data, orthophoto data, territorial spatial planning data, CAD topographic maps, as-built data and cadastral data. Integrated management of natural resources information.

Compare the design BIM program with the actual 3D scene to realize the comparison of program design, monitor the progress of implementation of major projects, and meet the needs of natural resources monitoring and monitoring of the implementation of territorial spatial planning. Combining the actual 3D model on the ground with the underground pipelines, it builds a three-dimensional map of urban natural resources and realizes the all-round management and service of urban natural resources above and below the ground.

3, open-pit mine management

In open-pit mining activities, the deeper the mine is dug, the more the production department wants to better grasp the changes in the pit and the site can be utilized to map the results of the drone as a general map of the entire mining area, technicians and management personnel can be viewed at any time at any time of the entire area. The use of drone data collection, with professional modeling software, can quickly generate a three-dimensional model of the mine, on the one hand, greatly improves the efficiency of the work, reduces the safety risk of surveyors.

5, planning and design

such as assisting bridges for planning and design. Combined with BIM technology to achieve three-dimensional design of the bridge structure. At the same time the use of BIM modeling technology to achieve real-time dynamic adjustment of the bridge design scheme and three-dimensional dynamic demonstration.

What are the main applications at present?

For the above-mentioned aspects of smart cities, open-pit mining, and planning and design, let me say what applications have been incorporated:

Aerial modeling, also known as tilt-photography 3D, is a GIS technology that has been rapidly developing in recent years. It utilizes aircraft or drones carrying multiple sensors to photograph and collect features from the front, back, left, right, and vertical directions to quickly and efficiently obtain data information that truly reflects the ground situation. Through a series of internal processing operations, such as correction, leveling, and multi-view image matching, a three-dimensional model is finally obtained.

The comparison between aerial modeling and manual modeling is as follows:

In addition to the above features, the resultant data of aerial modeling has geographic coordinate system information, which can be accurately matched with the GIS, while the manual modeling needs to manually correct the spatial alignment in order to match with the GIS. The OSGB model data of aerial photography modeling has Level of Detail (LOD), and the system can display LOD level models with different accuracy according to the user's browsing time and the distance of the scene, which improves the efficiency of data display and rendering.

Smart City

Digital management is to realize the convergence, fusion, and enjoyment of multi-dimensional business data of the city, and to integrate the management of operation and maintenance through visualization technology, and the Hightopo visualization engine and the technology related to the Geographic Information System (GIS) provide a system that builds a visualization model based on the latitude, longitude, and elevation data. The Hightopo visualization engine and GIS related technologies provide the ability to build roaming routes based on latitude, longitude and elevation data.

Integrated with GIS, video surveillance can quickly locate specific monitoring positions compared to traditional video surveillance, and when something unexpected happens, not only can you quickly locate the event location, but you can also quickly view information about the situation in the area.

Open-pit mining

Also provides a combination of GIS maps to show the mining field solutions, through the drone aerial photography, plus post-data processing, seamless fusion of HT's original 3D models, to achieve the integration of the macro and micro integration of the needs of the mines, a very good solution to the problem of the traditional manual real-time modeling of the workload of the huge.

High-precision real-time monitoring of the environmental situation, mining progress, equipment operation, working conditions and other information, giving spatial attributes to the data and visualizing complex factors. It forms a set of reference data that can be used for insights and provides strong decision support for mining operation supervision.

Planning and Design

Integrate GIS data with cloud computing, big data, Internet of Things and other technologies to build a real digital economy, digital city and digital China; based on space-time and visualization analysis technology, it provides technological support for planning, layout, analysis and decision-making of the city, and promotes the digital conversion and construction of the city.

Data visualization to a certain extent, but also change the previous work mode, such as the city's inspection, the staff do not need to go to the field site, directly in the visualization platform through roaming, video monitoring and other ways to view, in conjunction with the Internet of Things, and can even be the city's indicators to monitor the abnormalities or alarms when the control of the processing.

And GIS integration in the land site selection, path planning, resource allocation, and environmental monitoring, macroscopic auxiliary decision-making analysis, microscopic monitoring and control of assets, so that each industry on a more intelligent production, management and operation and maintenance.