True to Life White Papers and Resources

Fourier Error Analysis of Ray Tracing on a Geospatial Polygonal Model
This paper demonstrates that the error associated with ray tracing photorealistic polygonal models of Light Detection and Ranging (LIDAR) scan data is negligible for many applications. In some cases, the standard deviation of error is actually reduced by ray tracing to points on a polygonal model between LIDAR data rather than capturing more data from a scanner. Numerical analyses on the sources of error were performed using Fourier analysis, Taylor expansion, and a statistical model of LIDAR data. Ray tracing was then used to calculate the intersection of each polygon at a point of interest, allowing 3D data to be quantified at any location in between LIDAR points. Actual acquired from a LIDAR scanner and modeled data are then compared to the ray traced values. Results show that many data types have sufficiently low spectral content, allowing accurate representation of 3D data acquired from a LIDAR scanner as a polygonal model.

Use the TLM™ Engine

  • The TLM Engine principles have been applied to Pinpoint 3D's Zipline™software.
  • See the numbers crunched on your own data.
  • Import your LiDAR data to see your points transform into usable models.

Consulting Engagements

Help with the capture process
Our consultants can help you create a short list of LiDAR venders whether you want to bring a scan team in-house or hire someone by the job, we'll help you decide what the best option is for you.

Data Preparation

Let us prepare your data for import into your program of choice. Contact us and we'll let you know if we can move your data where you want it.

Noise Reports
Let us create detailed noise reports on your LiDAR data, create statistical comparisons between traditional data capture and LiDAR capture. And any other project that involves high levels of confidence in your data accuracy.

Contact Brandon Baker for more information bbaker@pinpoint3d.com

What Is LiDAR?

LiDAR stands for Light Detection and Ranging.
Using light waves, the distance to an object is determined by measuring the time delay between transmission of a light pulse and detection of the reflected light. By joining millions of pulses together three-dimensional data is obtained.

For more information please visit Wikipedia.