• Shanghai Hangyao Information Technology Co., Ltd.

    Technical Services for Oblique Aerial Photography and Making Live-action 3D Models in the Surroundings of the West Lake, Hangzhou City

    Beijing City, China

Project Summary

Project
There is an old saying that, “Paradise in heaven, Shuzhou and Hangzhou on Earth.” Hangzhou West Lake in the Zhejiang province of China is one of the top 10 scenic areas and a major tourist destination in mainland China. It has been established as the only cultural heritage lake in the country. In recent years, Hangzhou has become well-known as the headquarters of Alibaba. The city retained Shanghai Hangyao Information Technology to guarantee a safe, successful Hangzhou G-20 summit, and to protect the surrounding landscape from pollution due to rapid urbanization. To address this challenge, the organization decided its best approach was to obtain aerial images and generate a 3D reality mesh of the site for geological analysis, planning, and development.

Solution
The project team used multi-view oblique photography to acquire images of the complex geographic surroundings, as well as Bentley’s ContextCapture to generate live-action 3D reality meshes. Bentley’s automated reality modeling processing technology enabled the team to construct the models with superior modeling effects in a compressed time period to meet customer demands.

Outcome
All-round, live-action 3D models were acquired by aerial photography, which surveyed the complex geographical information, to fully understand the surroundings of the West Lake of Hangzhou City and ensure the smooth progress of the Hangzhou G-20 summit. The 3D models also analyzed and protected scenic West Lake locations based on the current information. The reality modeling demonstrations improved collaboration among stakeholders, as well as saved material and labor resources. Compared to traditional methods, ContextCapture significantly enhanced efficiency, and the Hangzhou Municipal Survey and Design Institute indicated that the application of such technology reduced the direct cost by millions of Yuan. Bentley technology delivered multiple types of data in the results. With the modern technology, the obtained 3D results were easier to dock with the GIS management software later.

Software
By using ContextCapture, Hangyao Information Technology first reduced the dependence on the high quality of the original data. In the later period, computer vision matching and automatic 3D reconstructions using 3D data solved the problems of paralleled processing during the modeling stage. During the delivery stage, using Bentley technology also optimized costs. The highly intuitive and accurate reality mesh generated by ContextCapture brings precise and comprehensive spatial analysis into practice, such as commanding height analyses. The online presentation of 3D data and its offline management effectively reduced the delivery time. This technology realized a great leap forward in the development of live-action 3D data based on the framework for the information. This development was beneficial for acquiring the geological overview of the West Lake and its surroundings in Hangzhou City, guaranteeing the successful opening of the Hangzhou G-20 summit.

Project Playbook: ContextCapture

Outcome/Facts
  • Shanghai Hangyao Information Technology used Bentley’s reality modeling to generate a 3D reality mesh for geological analysis, planning, and development purposes due to the Hangzhou G-20 summit.
  • Bentley’s automated reality modeling processing technology enabled the team to construct the models with superior modeling effects in a compressed time period and reduce cost by millions of Yuan, compared to traditional methods.
  • The highly intuitive and accurate reality mesh generated by ContextCapture brings precise and comprehensive spatial analysis into practice.
  • The reality modeling demonstrations improved collaboration among stakeholders, saved material and labor resources, and guaranteed the successful opening of the Hangzhou G-20 summit.
Quote:
  • “Bentley’s ContextCapture software carries out reality modeling at a fast speed, with a short work period and superior modeling effects.”

    Weiting Huang Technical Manager for Reality Modeling Shanghai Hangyao Information Technology Co., Ltd.