Ground penetrating radar (GPR) uses wave technology to non-invasively provide an image (radargram) of the internal structure of the tree. The TBA post-processing software measureswave reflection that will vary based on wood density. Our radargrams display normal wood density as a tan to brown color and lower wood density as a cyan to blue color. The areas that are outlined with a magenta line are areas of predicted compromise.
As seen in these photos, the radargram does show areas of cyan to blue color along with brown/tan areas. The cyan to blue color represents wood density where the waveform more easily pasted through the area. This indicates areas that are less solid. The software has thresholds between solid and compromised wood. The areas that are outlined with a magenta line are areas of predicted compromise.