DSM

Feature Description

DSM is the process of interpolating DSM Data products from geometric corrected imagery results using a dense matching method. Currently, only single-scene DSM Data generation is supported.

Parameter Description

Parameter Name Parameter Interpretation Parameter Type
Dataset

Displays the image data used for DSM Data, not editable.

 DatasetMosaic
Carry Out Three-Line Array Production

When the input image data comes from a three-line array sensor (including forward, nadir, and rear-view images), you can choose whether to perform three-line array remote sensing imagery production.

  • Selected: Enable three-line array remote sensing imagery production mode.
  • Not selected (default): Image production will be performed only in two-line array mode.
 Boolean
Dense Matching Method A dense matching method that generates disparity maps from epipolar images. Supports two dense matching algorithms, SGM_CPU and DL_GPU, to generate point cloud datasets.
  • SGM_CPU: A semi-global dense matching algorithm based on multi-path dynamic programming strategy. SGM considers the accuracy of matching target boundaries, robustness to illumination changes, and computational efficiency, providing good application value.
  • DL_GPU: A deep learning-based stereo image dense matching method.
 DenseMatchingMethod
Resolution Sets the spatial resolution of the result data, default is 10 (unit: m). Double
Coordinate System Settings Uses the Output Coordinate System parameter from Set Image Path (DSM/DEM), not editable. PrjCoordSys
Output Format Uses the Output Format parameter from Set Image Path (DSM/DEM), not editable.
FileType
Compression Method Uses the Compression Method parameter from Set Image Path (DSM/DEM), not editable.
CompressMethod
RPC File Path Uses the RPC File Path parameter from Block Adjustment, not editable.
File
Output File Path Uses the Processing Path parameter from Set Image Path (DSM/DEM), not editable.
File
Output Orthometric Height Image

Specifies whether to convert the resulting ellipsoidal height image data to orthometric height image data.

  • Selected: Converts the resulting ellipsoidal height image data to orthometric height image data.
  • Not selected (default): Only outputs the image result calculated based on ellipsoidal height.
 Boolean
Repair Water Body Elevation Water areas are typically weak texture regions, making it difficult to accurately match elevation points. Therefore, during DSM/DEM generation, this may lead to incorrect elevation values in water areas. By re-specifying the elevation value of water areas, the water body elevation in the result data can be automatically repaired, thereby improving the accuracy of the result data. Not selected by default, meaning water body elevation repair is not performed. Boolean
Source of Data Available after checking Repair Water Body Elevation. Two methods are provided to determine water areas: Existing Data and Water Body Detection. WaterBodyVectorSourceType
Data Source

Available after selecting Existing Data in Source of Data.

Used to specify the data source where the water body zonal data resides.

 DataSource
Dataset

Available after selecting Existing Data in Source of Data.

Used to specify the water body area surface dataset.

 DatasetVector
Multispectral Data Source

Available after selecting Water Body Detection in Source of Data.

Used to specify the data source containing the multispectral data.

 DataSource
Multispectral Dataset

Available after selecting Water Body Detection in Source of Data.

Used to specify the mosaic dataset containing the multispectral data.

 DatasetMosaic
Pixel Threshold

Available after selecting Water Body Detection in Source of Data.

Enter the pixel threshold for extracting water areas, default is 64. If the detected pixels are less than this value, they will not be extracted as water areas.
Integer
Downsampling Factor

Available after selecting Water Body Detection in Source of Data.

Default is 1, meaning sampling every 1 point in each row and column in an n*m image to improve sampling efficiency.

The input value must be an integer no less than 1. A larger value results in faster sampling speed but may lead to poorer detection results.
Integer
Elevation Value Enter the elevation value of the water body. If empty, the elevation value of the area is obtained from DEM elevation data.
String
Elevation Smoothing When checked, the boundary between water body and DSM Data will be smoothed. If unchecked, the elevation value of the water area will be directly updated to the specified elevation value. Boolean

Output Result

  • Output DSM Data to a local folder.
  • Automatically create a DSM mosaic dataset in the OrthoData data source based on the output data.

Related Topics

Set Image Path (DSM/DEM)

Filter DSM

Output Result (DEM/DSM)