Practical Application Of Hi-Target Mobile Mapping System In Hydrology

2020-11-13

Compartir con：

Practical application of Hi-Target Mobile Mapping System in Hydrology

Background

Guizhou Hydrology and Water Resources Bureau held an emergency preparedness training to ensure effective response to hydro emergencies when needed in Da Caiyuan gauging station in June 20-21, 2017. Hi-Cloud Technology Ltd. was invited to showcase the latest 3D laser system in hydrology applications. We have collected abundant data resulted from the operation and proved that Hi-Target is an advanced technology company in 3D laser system.

20171220103613518 - Practical Application Of Hi-Target Mobile Mapping System In Hydrology

Emergency preparedness training held by Guizhou Hydrology and Water Resources Bureau

20171220103736852 - Practical Application Of Hi-Target Mobile Mapping System In Hydrology

Hi-Cloud shipborne 3D laser scanning system

20171220103829497 - Practical Application Of Hi-Target Mobile Mapping System In Hydrology

Technical staff is using software to process data

Demonstration results

Generate contours automatically based on point clouds

Since the point cloud data obtained by Hi-Target 3D laser scanning technology has accurate coordinate information, contour lines can be automatically generated from these high-precision point cloud data after custom setting of contour distance in Hi-Target post- processing software.

Hi-Target point cloud processing software support linkage CAD software, into which contours can be imported in real time to draw graph and save image.

The contours of this demonstration are as follows:

20171220103936205 - Practical Application Of Hi-Target Mobile Mapping System In Hydrology

Generate contours automatically based on point clouds

20171220104015037 - Practical Application Of Hi-Target Mobile Mapping System In Hydrology

Contours

Draft Water level lines based on point cloud data

3D laser scanning technology, also known as "real scene copy technology", the point cloud data obtained by 3D laser scanning distinct from traditional survey as high precision, high density. Based on these two characteristic of the point cloud, hand drawing can be proceeded in Hi-Target post-processing software. Hand-drawn water level lines not only suitable for space measurement, also can be displayed as images by linking to real-time drawing program.

20171220104117963 - Practical Application Of Hi-Target Mobile Mapping System In Hydrology

Water level line drafting based on point cloud data (water level length in real-time display

20171220104216140 - Practical Application Of Hi-Target Mobile Mapping System In Hydrology

Contours

Over- and underwater- data integration

The point cloud obtained by Hi-Target shipborne 3D laser scanner is compatible with the underwater data obtained by the multi-beam echo sounder of the Guizhou Hydrology Bureau. The auto-generated contour lines and isobaric lines can be imported into the drawing software at the same time, leading to the result of land and underwater data integration. The integration effect is shown as below

20171220104319410 - Practical Application Of Hi-Target Mobile Mapping System In Hydrology

Data integration of land and underwater

20171220104416821 - Practical Application Of Hi-Target Mobile Mapping System In Hydrology

Generates contours and depth contours based on land and underwater point cloud data

Auto area-calculation of liquid surface at any elevation

Generated DEM automatically based on the point cloud, from which to obtain any liquid surface at any elevation.

2017122010454325 - Practical Application Of Hi-Target Mobile Mapping System In Hydrology

Generated DEM automatically based on the point cloud data

20171220104541671 - Practical Application Of Hi-Target Mobile Mapping System In Hydrology

Automatic calculation of any liquid surface at any elevation

Calculate the volume of the reservoir automatically at any elevation

Use Hi-Cloud processing software to generate DEM based on point cloud, from which to obtain the volume at any elevation.

20171220104631644 - Practical Application Of Hi-Target Mobile Mapping System In Hydrology

Use Hi-Cloud processing software to generate DEM based on point cloud

20171220104710882 - Practical Application Of Hi-Target Mobile Mapping System In Hydrology

Obtain the volume according to water lines

Extract arbitrary cross-section lines of river

Because point cloud has high-precision coordinate information, across-section lines can be obtained from cross-section using post-processing software.

20171220104754932 - Practical Application Of Hi-Target Mobile Mapping System In Hydrology

Select cross section in point cloud （red line）

20171220104821825 - Practical Application Of Hi-Target Mobile Mapping System In Hydrology

Extract cross-sectional lines based on cross-sectional point cloud

Visual water lines submergence warning

Equipped with a high-definition panoramic camera, the over- and underwater integrated equipment of Hi-Cloud can capture the real-time view of scenery on both banks of the river. Acquire the predictable elevation of water level through hydrological data and import it into the software to check the forecasting submerged status of water level line in real time.