Patent ID: 11941878
Assignee: RAYTHEON COMPANY
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 18:
19. A computer-implemented method of automated road network identification, said computer programmed to implement the steps of:
receiving a single multi-band image including a first set of band images and a second set of band images collected with a time lag relative to the first set;
exploiting the time lag between the first and second sets to detect moving vehicles including their location, heading and speed in the single multi-band image;
using the detected moving vehicles to extract pixel values from the single multi-band image at pixels adjacent to locations of the detected moving vehicles to characterize at least one image-specific spectral roadway signature;
searching the single multi-band image to match the at least one image-specific spectral roadway signature to pixel values for each of the bands for groupings including at least one pixel to grow a road network map; and
using the speed and heading of the detected moving vehicles to label the road network map.