Pixels to Points Processing Report
Separate from the log file, the Post Processing Report is designed to efficiently summarize the outputs from the Pixels to Points tool in a way that is easily digestible.
The Post Processing Report is generated at the completion of the Pixels to Points tool processing. It will automatically open in your default web browser and can be saved as a PDF document. If the Log option has been set, the file will save in that location as Filename_report.html.
The Summary chart shows basic information about the dataset and output. Some of this information is read from the metadata saved by the UAV when the image was taken, including Image Collection Date, Camera Make, and Flight Altitude. Other information is calculated during processing, including: Processing Date and Time, Approx. Ground Spacing, Image Count, Image Pixel Count, Coverage Area, and Fit Error Mean and Max.
For information on Projection and Datum, see Output Files.
The Overview section shows images of each generated output, and notes the camera positions and information used for each image in the data set.
The Point Cloud Section shows the total number of points in the cloud, and the point density in the form of Average Point Spacing. The point cloud will display based on the draw mode currently set for lidar in Global mapper. The default color for an unclassified point cloud is gray.
The Orthoimage Section shows the full image, and the orthoimage’s resolution.
The 3D Model Section shows the 2D, nadir perspective of the 3D Mesh along with its Vertex Count, and Face Count.
Face and Vertex delineation is visible in Global Mapper when zoomed in but is omitted in this report for clarity.
The Camera Positions section shows camera icon at the center location of each image relative to the orthoimage to make it easier to visualize area coverage. Areas with a higher image coverage will typically have a lower chance of errors. Images that were unable to be used in the Pixels to Points process will be shown with a red X symbol.
The Camera Positions chart shows the image name, and specifics on where the image was taken including Elevation, Roll, Pitch. and Yaw. This chart makes it easy to compare image metadata for quality control purposes. Images unable to be used in the process are listed at the bottom of the Camera Positions table.
The Quality Assessment chart breaks down processing success image by image. This includes the number of observations, or object points, in each photo that P2P was able to find in other photos. The residuals are the distance between where Pixels to Points thinks a point should be, and where it ended up. Residuals are largely proportionate to the number of errors.
Images that were unable to be used in the process are listed at the bottom of the Quality Assessment Chart.
The Processing describe the Pixels to Points tool settings used in the process. These include:
Method: See Analysis Method
Quality: See Quality
Camera: See Camera Type
Image Reduce Factor: See Reduce Image Size