Building Geospatial Information Based on Aerial Photography

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Geospatial Information Based on Aerial Photography

Geospatial Information Based on
Aerial Photography

Aerial Photography

Aerial photography means taking an aerial image of the surface from an aircraft through a digital camera or aerial LiDAR.
SHINHAN Aerial Survey is carrying out various aerial photography tasks by installing high-tech map-making digital cameras and aerial LiDAR on aircraft.

Result

Major Application Field

Digital Map Production Procedure

Step. 01

Planning and shooting

Step. 02

GPS/IMU Data Processing

Step. 03

Producing Results

Step. 04

Image(Map) Production

Digital Map Production

Digital maps refer to maps that digitize geospatial information such as location information and topographic information according to a certain scale, drawing by aerial photographs, digitizing existing paper maps, and local surveys.

Result

Major Application Field

Digital Map Production Procedure

Step. 01

Step. 02

Step. 03

Step. 04

Step. 05

Step. 06

Data Collection

Surveying Ground Control Points

Aerial Triangulation

Digital Restitution

Position Correction Editing

Digital Map Production and Inspection

Step. 01

Step. 02

Step. 03

Data Collection

Surveying Ground Control Points

Aerial Triangulation

Step. 04

Step. 05

Step. 06

Digital Restitution

Position Correction Editing

Digital Map Production and Inspection

Step. 01

Data Collection

Step. 02

Surveying Ground Control Points

Step. 03

Aerial Triangulation

Step. 04

Digital Restitution

Step. 05

Position Correction Editing

Step. 06

Digital Map Production and Inspection

Digital Elevation Data Production

Digital Elevation Data Production is a ground surface model produced in a grid form using digital ground data or irregular triangular network data. Production methods include aerial laser surveying, using the contour layer of the digital map, image matching, and using field surveying results. The digital elevation data includes a Digital Elevation Model (DEM) and a Digital Terrain Model (DTM) that express parts except buildings, artificial structures, and trees, and a Digital Surface Model (DSM) that includes all information such as buildings, artificial structures, and trees.

DEM 1

DSM 1

Result

DEM 2

DSM 2

Major Application Field

Digital Elevation Data Production Procedure

Step. 01

Airborne Laser Scanning

Step. 02

Data Preprocessing

Step. 03

BoreSight Calibration

Step. 04

Generating Raw Data

Step. 05

Surveying Ground Control Points

Step. 06

Automatic Classification of Topographic Features

Step. 07

Orthometric Height Conversion

Step. 08

Digital Elevation Model Production

Step. 09

Digital Surface Model Production

Step. 01

Step. 02

Step. 03

Airborne Laser Scanning

Data Preprocessing

BoreSight Calibration

Step. 04

Step. 05

Step. 06

Generating Raw Data

Surveying Ground Control Points

Automatic Classification of Topographic Features

Step. 07

Step. 08

Step. 09

Orthometric Height Conversion

Digital Elevation Model Production

Digital Surface Model Production

Orthophoto Map Production

Orthophoto is an image that corrects geometric and slope distortion that occur when taking aerial images. In the aerial photographs that have undergone orthogonal correction, the mutual positional relationship of topographic features becomes the same as the map. Therefore, the shape that looks like it is lying on its side in a normal photo is expressed as a vertically looking down image after

Aerial Image

OrthoPhoto

Major Application Field

Orthophoto Map Production Procedure

Step. 01

Step. 02

Step. 03

Step. 04

Data Collection

Surveying Ground Control Points

Aerial Triangulation

Digital Elevation Data Production

Step. 04

Step. 05

Step. 06

Orthophoto Production

Radiation Correction and Seamline Process

Making an Image into a Map Unit Size

Orthophoto Map Production

Orthophoto Map Production Procedure

Step. 01

Step. 02

Data Collection

Surveying Ground Control Points

Step. 03

Step. 04

Aerial Triangulation

Digital Elevation Data Production

Step. 05

Step. 06

Orthophoto Production

Radiation Correction and Seamline Process

Step. 07

Step. 08

Making an Image into a Map Unit Size

Orthophoto Map Production

Orthophoto Map Production Procedure

Step. 01

Data Collection

Step. 02

Surveying Ground Control Points

Step. 03

Aerial Triangulation

Step. 04

Digital Elevation Data Production

Step. 05

Orthophoto Production

Step. 06

Radiation Correction and Seamline Process

Step. 07

Making an Image into a Map Unit Size

Step. 08