Customising for today’s city management

The world is changing and becoming increasingly complex. Cities face great challenges as most of world's population lives in urban areas, and city management is becoming more demanding. In light of new challenges, municipalities and local governments are looking for efficient management solutions to provide detailed information, data and analysis for effective city management.

Envirosense Hungary Ltd. is a remote sensing specialist that emphasises on the process of aerial sensed inputs. Understanding city management needs, the firm offers varied advanced products for surveys that are impossible to be conducted by traditional on-field surveys or need large resource inputs. Focusing on aerial hyperspectral imagery, airborne laser scanning (LiDAR), unmanned aerial vehicle (UAV) applications and aerial digital imagery, Envirosense Hungary Ltd provides personalised solutions that fulfil the customer needs.

该公司的目标是为地方政府提供适应其需求的智能产品。亚搏彩票手机版下载大多数地方政府都没有内部遥感专家或地理信息系统（GIS）专家的内部团队，他们可以处理数据或开发解决特定挑战的方法。

“在许多情况下，存在问题，但是与空中技术的联系尚未建立，或者尚未开发技术解决方案。我们的目标是创新；我们开发了可用户就绪的产品和解决方案，并将其亚搏彩票手机版下载交付给地方政府，”said Peter Enyedi, manager of the LiDAR division at Envirosense Hungary Ltd.

Using the latest LiDAR technology

“Our products have to achieve high accuracy, high resolution, and conform to the latest standards in the photogrammetry and LiDAR market,”said Gregory Lucas, manager of the photogrammetry division at Envirosense Hungary Ltd.

Envirosense uses Leica Geosystems ALS technology combined with the Leica RCD30 medium format RGBN camera for the aerial surveys and the Leica Viva CS15 field controller for ground surveys. Based on this technology, Envirosense responds to customer needs with custom-made solutions.

“Some of the products consider trees and vegetation so a four-channel camera was a need. Radiometry and light sampling is important for the segmentation issues. We are also working intensively with LiDAR-hyperspectral data fusion. The choice of a photogrammetry and LiDAR system is fundamental for our projects,”said Enyedi.

“We have used the Leica Geosystems airborne dual sensor and camera for all the airborne missions requiring LiDAR or imagery since 2012,”said Enyedi.“It’s the high quality, costefficiency and performance of the LiDAR system that make us a committed Leica Geosystems customer all these years.”

Introducing airborne technology

Envirosense uses Geosystems’ sensors in a variety of applications to effectively support local governments in city management, such as:

1. Terrain models for water authorities
2. 洪水建模
3. Vegetation mapping
4. Land use classification
5. 农业应用
6. Forestry (invasive species mapping, biomass estimation)
7. Nature conservation
8. Archaeology
9. Urban planning
10. Vinery application

Instead of just generating basic datasets, Envirosense extracts the information and offers it to its clients.The company gave a presentation during the 2018 Airborne User Group Meeting in Lisbon, Portugal, based on a research the team did to classify urban objects and surface types based on LiDAR point cloud and aerial multi- or hyperspectral imagery. With object-based feature extraction methods, a series of products can be generated from urban surface types to tree cadastre. This offers the basis of decision making and further analysis.

In addition, it opens the way to detailed and varied database-maintenance, allowing inventories and cadastres tasks. The data can be integrated with aerial hyperspectral data, satellite data and data collected by UAV platforms.

The data is used for detailed building modelling and structural change detection. Cities can check whether construction permits were issued, and insurance companies can assess values of the houses.

林业映射管理有广泛使用的数据。可以识别树木，并且可以检测到树木健康以避免疾病的传播。城市的责任是倒下的树木的损害。该技术使地方政府能够确保所有树木状况良好。

此外，可以检测到屋顶物体（例如房屋上的气候单元）来定义房屋的保险价值。该城市的太阳潜力也可以识别出来；激光雷达技术可帮助地方政府定义最适合安装单位的区域，并计算能够进行多少电力。

“The multitude of objects we extract and map reflects the quality of the data acquired by the aerial system and the advancement of our methods for mapping and classification,”said Enyedi.

Among the features Envirosense can extract are:

1. Roof types
2. Chimneys
3. The type of surface cover (streets)
4. Road signs
5. Solar panel elements
6. 放置太阳能电池板元素的潜在场所
7. Objects on the ground
8. 特性在公墓
9. 树木和植被
10. Surface water networks
11. Power lines

Making it personal

Envirosense's strategy is to develop custom-made products for clients who are not experts in remote sensing and GIS fields, but their needs require aerial remote sensing technology.

“It is the direction where we see the biggest potential for development; the opportunities are unlimited,”said Enyedi.

Envirosense recently createdOpen Street View, a new solution for its orthoimagery product line. The solution allows local governments to identify ground-located objects, useful for any organisation’s inventory tasks. Envirosense uses the same airborne survey equipment, but the planning and processing is adapted to the project’s specific needs.

Looking ahead

LIDAR解决方案和图像技术组合为映射和分类提供了令人难以置信的灵活能力。

“We expect to extend our offerings for city management purposes in the future,”卢卡斯说。“We will continue working with Geosystems' airborne solutions and cameras as they offer the maximum efficiency for this type of projects.”