LiModel Editor

Summary

Provides editing operations for LiModel. The user can select area of interest using Polygon Selection, Lasso Selection, Screen Selection, or Shp Selection, which can be edited by various operations such as Flatten Height, Smooth Height, Repair No Data, Repair Height by Variance, Repair Height and Delete Height.

LiModeltoolbar
LiModelwin

Usage

Click Terrain > LiModel Editor. The current activation window will show the LiModel Editor toolbar.

Data Selection

Click Start Edit in the drop-down menu for editing. You can select one or more data which has been opened in LiDAR360 for editing.

selection

Polygonal Selection

Left-click to add the polygon vertex, double-click to finish the selection. Right-click to Back One Point or Clear Selection before finish. Unlike Screen Selection tool, you cannot select an area that exceeds the data range.

selectcontexmenu

Lasso Selection

Left-click to start the Lasso Selection, move to add one point, and double-click to finish the selection. Right-click to Back One Point or Clear Selection before finish. Unlike Screen Selection tool, you cannot select an area that exceeds the data range.

selectcontexmenu

Screen Selection

Left-click to add the polygon vertex, double-click to finish the selection. Right-click to Back One Point or Clear Selection before finish. You can select the area that exceeds the data range.

selectcontexmenu

Shp Selection

For a specific range, the existing 2d SHP format vector file can be imported, and the polygon is identified by the software as the editing area.

Flatten Height

Click this button, or right-click to select Flatten Height. You can set elevations for selected area range models to specified elevation values for rivers or waters that have the same altitude.

Flatten Height
  • Flatten Height (m): Set the elevation value. The default value is the average of the elevation values of the vertices of the selected region.

The schematic diagram is as follows, the left image is the original data, and the right image is the edited version.

flatresult

Smooth Height

Click this button, or right-click to select Smooth Height, which can smooth the selected area range model. Using image mean smoothing to process the model in the selected region point by point, it is suitable for smoothing DEM to generate smooth contour lines.

smooth
  • Kernel Size (default value is "5"): The size of the mean filter kernel, it can only be odd.

The schematic diagram is shown below. The left figure shows the original data, and the right figure shows the effect after editing.

smoothresult

Repair No Data

Click this button, or right-click to select Repair No Data. Use bilinear interpolation to calculate the elevation value of NO Data values in the area.

The schematic diagram is shown below. The left figure shows the original data, and the right figure shows the effect after editing.

nodataresult

Repair Height by Variance

Click this button, or right-click to select Repair Height by Variance. It is used to repair the noise caused by noise, according to the variance of its elevation value with the neighborhood point to determine whether it is a noise. Bilinear interpolation is used to calculate the elevation of the noise point.

noise
  • Elevation Variance Threshold: The elevation variance threshold is used to determine whether it is a noise.

The schematic diagram is shown below. The left figure shows the original data, and the right figure shows the effect after editing.

noiseresult

Repair Height

Click this button, or right-click to select Repair Height. It is used to repair the elevation in the specified range. The bilinear interpolation method is used to calculate the elevation of the parameter conditions.

adjust
  • Select the Bad Point Value: Select the bad point value to support the following types.
    • All selected as a region of no data value (default): All selected areas will be repaired.
    • Elevation Range: Only grids with elevation values within the minimum and maximum values are repaired. The default values for the maximum and minimum values are the maximum and minimum elevation values for the vertices of the selected area.
    • Internal No Data Value: Only the non-valued areas are repaired.

The schematic diagram is shown below. The left figure shows the original data, and the right figure shows the effect after editing.

adjustresult

Delete Height

Click this button, or right-click to select Delete Height. Delete the selected point elevation point.

The schematic diagram is as follows, the left image is the original data, and the right image is the edited version.

deleteresult

Save Editing Results

Save the edited result to LiModel file.

Cancel editing

Cancel editing, discard edit result, reload original file to display.

Exit

Exit LiModel Editor. If the editing result is not saved, and click the Exit button or click the Edit button to finish the editing of the menu, the software will pop up the prompt window as shown below. Click Yes to save the editing result and exit. Click No to exit without saving the editing result. Click Cancel returns.

exitdialog

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