2.5D Tool for custom workflows

When aiming to achieve true orthophotos of excellent quality the DSM, which is the geometric basis of the true orthophoto calculation, sometimes does need manual editing. Reasons for this can be manifold, for example rough surfaces near water bodies or areas with low image texture. Therefore the regular SURE workflow can be interrupted and the edited intermediate results can be fed back into the pipeline in order to achieve an improved final result.

Step 1

Process the Dense Cloud and the DSM with SURE, but leave out the True Ortho and DSM Mesh stages.

Step 2

Do your QA process for example with the SURE Image viewer.

  • Open the DSM Cloud tiles, that need further editing with your preferred point cloud editor, e.g. CloudCompare. You can modify the clouds as required and even complement the clouds using data from other sources.
  • Save the edited clouds in a separate folder to avoid overwriting of original data.
  • We recommend to work on the DSM Clouds, since at this stage DSM rasterization has already been carried out and the amount of points is reduced significantly compared to the  Dense Clouds.

Step 3

Feed the modified data back into the SURE pipeline

  • Open the 2.5D Tool. You can find it among the "Tools" section in the GUI's file menu.
  • When loading the project's settings, the raw dense clouds (3D_Points) are set as "Input Cloud". Instead, in order to save time for the dense cloud rasterization (DSM process), you can also specify the already rasterized DSM clouds (folder DSM\Cloud). In this case you have to slightly adjust the parametrization accordingly (see screenshots to the right):
  • Adjust parameters as required. For example, you can also alter the GSD and/or tile size.
  • Select the desired processing outputs (True Ortho, DSM Mesh, DSM Mesh Texturing) and start the process.

DSM stage reprocessing

Please note that also the DSM stage will be processed again on the basis of the modified point clouds. However, since the rasterization of the dense clouds has already been carried out during the original run of the DSM module, the DSM stage will be finished in a fraction of the time needed for the original DSM generation.