BURIED OBJECT DETECTION IN GPR IMAGES
First Claim
1. A method for generating a statistic for a down-track location from an original reconstructed image frame and a post-processed image frame, the image frames having pixels with values, the method comprising:
- calculating energy of the pixels in the reconstructed image frame;
calculating a spot energy from the values of post-processed image frame pixels within a spot; and
setting the statistic based on a ratio of the spot energy to the pixel energy.
2 Assignments
0 Petitions
Accused Products
Abstract
A method and system for detecting the presence of subsurface objects within a medium is provided. In some embodiments, the imaging and detection system operates in a multistatic mode to collect radar return signals generated by an array of transceiver antenna pairs that is positioned across the surface and that travels down the surface. The imaging and detection system pre-processes the return signal to suppress certain undesirable effects. The imaging and detection system then generates synthetic aperture radar images from real aperture radar images generated from the pre-processed return signal. The imaging and detection system then post-processes the synthetic aperture radar images to improve detection of subsurface objects. The imaging and detection system identifies peaks in the energy levels of the post-processed image frame, which indicates the presence of a subsurface object.
-
Citations
20 Claims
-
1. A method for generating a statistic for a down-track location from an original reconstructed image frame and a post-processed image frame, the image frames having pixels with values, the method comprising:
-
calculating energy of the pixels in the reconstructed image frame; calculating a spot energy from the values of post-processed image frame pixels within a spot; and setting the statistic based on a ratio of the spot energy to the pixel energy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A computer-readable storage device storing computer-executable instructions for controlling a computing device to detect an object within a sequence of image frames generated for down-track locations, each down-track location having a reconstructed image frame and post-processed image frame, by a method comprising:
-
for each down-track location, calculating energy of pixels in the reconstructed image frame for the down-track location; calculating a spot energy from pixels of the post-processed image frame of the down-track location that are within a spot on the post-processed image frame; and setting a statistic for the down-track location based on a ratio of the spot energy to the pixel energy; and detecting presence of an object within the sequence of image frames based on a peak in the statistic for the down-track locations. - View Dependent Claims (11, 12, 13, 14, 15)
-
-
16. A computing device for generating a statistic for a down-track location from a reconstructed image frame and a post-processed image frame, the image frames generated from return signals acquired at the down-track location by receivers from ground-penetrating radar signals emitted by transmitters, the transmitters and receivers operating in a multistatic mode, comprising;
-
a component that calculates energy of pixels in the reconstructed image frame; a component that calculates a spot energy from the values of post-processed image frame pixels within a spot; and a component that sets the statistic for the down-track location based on a ratio of the spot energy to the pixel energy, the statistic for determining whether an object is buried in the ground. - View Dependent Claims (17, 18, 20)
-
-
19. The computing device of 18 wherein a peak of sufficient height in the statistics that is separated by a minimum number of statistics represents a buried object.
Specification