Underground Pipe Signal Extraction Using LoG Filter from Pulse Radar Images
نویسندگان
چکیده
A method for locating underground pipes from a pulse radar image is presented. The method employs the Laplacian of Gaussian filter to extract edges and employs the Hough transform to determine the depth of the pipes. A preliminary experiment showed its ability to detect deeply buried pipes with weak signal echoes. key words: radar image, Hough transform, LoG filter, underground locating
منابع مشابه
Extending the Radar Dynamic Range using Adaptive Pulse Compression
The matched filter in the radar receiver is only adapted to the transmitted signal version and its output will be wasted due to non-matching with the received signal from the environment. The sidelobes amplitude of the matched filter output in pulse compression radars are dependent on the transmitted coded waveforms that extended as much as the length of the code on both sides of the target loc...
متن کاملMulti-Feature Based Multiple Pipelines Detection Using Ground Penetration Radar
Ground penetrating radar (GPR) is one of the common sensor system used for underground inspection which emits electromagnetic waves that can pass through objects. The reflecting waves are recorded and digitized, and then, the images are formed. According to the properties of scanning object, GPR creates higher or lower intensity values on the object regions. Thus, these changes in signal repres...
متن کاملGPR Objects Hyperbola Region Feature Extraction
The shape and feature extraction in Ground Penetrating Radar (GPR) data is the most addressed application in present underground object identification technique. The problem of automatically detecting the shape and feature in GPR data is in analysing and fitting the hyperbola features from GPR data objects. To address these, we propose a hyperbole fitting method to extract the shape and feature...
متن کاملEstimating the Propagation Velocity Distribution and the Position of Buried Pipe Using x -t - v Data Matrix of Subsurface Radar Image
We propose a new method of radar imaging of underground pipes in inhomogeneous soil, which does not require a priori knowledge of the propagation velocity of electromagnetic waves in soil. In this method, three-dimensional x t -v data matrix from multiple migrated radar images with different propagation velocities using F-K migration method is composed. And we extract the hyperbolic apex and es...
متن کاملUnderground Utility Analysis and Soil Characterization Using Ground Penetrating Radar
This paper describes modern, non-invasive data acquisition methods of underground utility detection. Basic parameters, methods and their influence on the acquisition speed and data quality are defined. This data can be used for development of complex Geographic Information Systems. The aim of this paper is to show data extraction from the hyperbolic reflection on the radargram. These data are u...
متن کامل