Affine Transform Raster PCT – LP360

Requires an LP360 Drone, an LP360 Land Standard or an LP360 Geospatial license.

The Affine Transform Raster Point Cloud Task (PCT) is a powerful tool designed to modify the coordinates of raster datasets. It is commonly used for:

Grid-to-ground conversions
Local site calibrations
Raster debiasing and alignment
Applying horizontal and vertical rotation, scale, and translation
Transforming elevation surfaces and other georeferenced raster products

This task supports both component-based transformations (Rotate, Scale, Translate) and direct matrix input, making it flexible for a wide range of geospatial workflows.

If you are looking to transform a LAS check Affine Transform LAS PCT.

Parameters

Input Datasets

Select the data to which to apply the affine transform.

Feature Geometry - Defines the area to apply the affine transform.
Input Raster Layer - Select the raster dataset to use in the processing.

Transformation Settings

**Figure 2: Rotate, Scale, Translate and Origin settings**

Rotate: Specify rotation angles (typically in degrees) around the X, Y, or Z axis.
- Select the order of the axis of rotation, "X,Y,Z" or "Z,Y,X". The latter is the default.
Scale: Enter scale factors for each axis.
Translate: Input translation values to shift the raster dataset.
Origin: Define the origin point for rotation and scaling operations.

Matrix Settings

If you prefer matrix math, input the 3x3 transformation matrix and translation vector directly.

Enter the Rotate / Scale Values in the 3×3 matrix.
Enter the Translate XYZ Values for the translation vector.
Use Load From File to import transformation parameters from a saved file.
LP360 will auto-calculate the matrix from component inputs if both are used.

**Figure 3: Standard Transformation Matrices**

Output Settings

Output Folder: Select an output location to write the transformed raster dataset.
JPEG Compress: Enables JPEG compression to reduce output file size.
Quality: Sets the JPEG compression quality level.
Create Pyramids: Generates image pyramids to improve display performance when zooming and panning large raster datasets.
Enable BigTIFF: Creates the output as a BigTIFF file when the raster size exceeds standard TIFF limitations.
GeoTag as Local CRS: Tags the output raster with a local Spatial Reference System (SRS), also known as a local Coordinate Reference System (CRS), including the selected units (for example, International Feet or Meters), indicating the raster is stored in a non-standard or arbitrary Local Coordinate System (LCS).
Local CRS Units: Defines the coordinate units assigned when GeoTag as Local CRS is enabled.

Workflow: Applying Affine Transform Raster PCT

Create the Task
- In LP360, go to the Point Cloud Task Manager .
- Add a new task and select Affine Transform Raster as the type.
Configure Parameters
- Select the Input Raster Layer.
- Input Rotate, Scale, Translate values or use matrix input.
- Set the origin if needed.
Configure Output Settings
- Select the output folder.
- Configure compression, pyramids, and BigTIFF settings as required.
- Optionally enable GeoTag as Local CRS.
Run the Task
- Execute the task using the Point Task tab.
- Verify the output using visual inspection, survey control, or comparison with reference data.
Export the Task
- Save the task as an XML file for reuse or batch processing.
- Ensure only the Affine Transform Raster PCT is selected during export.