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DSM extracted from SpaceView-1 images using MASI software

Stereo images captured by Chinese commercial remote sensing satellite, SpaceView-1, are automatically processed to generate a DSM with 1 m grid cell by MASI software independently developed by VisionOnSky Co., Ltd.

 We (VisionOnSky Co., Ltd) use our independently developed software MASI to fully automatically process stereo images captured by Chinese commercial remote sensing satellite, i.e., SpaceView-1, to generate a DSM with 1 m grid cell. The main steps include the automatic orientation for a stereo of satellite images without ground control points (similar to relative orientation), dense stereo matching using the improved parameters based on image space and the RPC file provided by the image vendor. The algorithm of stereo matching, a both effect and performance optimized semi-global matching (SGM) algorithm independently developed by VisionOnSky Co., Ltd., is used to generate highly dense 3D point clouds through finding the point corresponding for each pixel. Furthermore, a DSM with 1 m grid cell is produced.   

 The results of hill shading of the DSM are shown as follows:   

 

 

 

 

 

VisionOnSky Co., Ltd is founded by scientific researcher, and is a startup company which is concentrating on the development of state-of-the-art technology, software realization of the new techniques and industrial applications in photogrammetry, remote sensing and computer vision.

 

We independently developed software MASI (Modules for Satellite and Aerial Imagery) whose main modules include stereo matching, automatic DSM extraction, DSM2DTM, orthorectification, pansharpening of satellite image, the automatic orientation for a stereo / triplet of satellite images, change detection of surface height for aerial, satellite and UAV images, respectively. These functional modules can compose a whole flowchart for aerial, satellite and UAV images, respectively. After these flowcharts, dense point clouds, DSM, DTM, nDSM, orthorectified image, pansharpened image and difference of surface height are produced.

 

The software can be applied to these aspects: (1) generation of mapping products (point clouds, DSM, DTM, orthorectified image, and pansharpened image); (2) automatically finding of new buildings, the buildings breaking the planning, and removed buildings, and estimating their corresponding accurate height; (3) monitoring the construction progress of new city, big residential district and huge engineering project; (4) testimony of land expropriation and housing demolition; (5) estimating the exploited volume of ores located on surface; (6) digital city and reconstruction of 3D scene; (7) collection of commercial and military intelligence; (8) accurate estimation of height of buildings and trees.

 

More information, please access our website: www.VisionOnSky.com

 




 

  Skype: jinghuiyang_bj
  E-mail:  jhyang@vip.163.com

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