SHIP WAKE DETECTION IN SPECKLE NOISE USING A MODIFIED HOUGH TRANSFORM (paper presented at the 10th Symposium on Remote Sensing, Edmonton, Alberta, May 5-8, 1986)

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Authors
  1. Wilmut, M.J.
  2. MacKinnon, R.F.
Corporate Authors
Defence Research Establishment Pacific, Victoria BC (CAN)
Abstract
Multiplicative speckle noise is a major feature of Synthetic Aperture Radar (SAR) images of ocean surfaces. Its effect is to give an image a "grainy" appearance often masking features of interest. The objective is to extract the characteristics of wake-like signals of low signal-to-noise ratio in such images. The approach taken is to consider the wakes as being composed of a sum of lines and to analyse them using the Modified Hough Transform (MHT), which places the average value of the points of a line in Cartesian co-ordinate space at that point in polar co-ordinate space which defines the line. The MHT method consists of two steps: first, possible wake-like signal regions are located and second, a statistical confidence level is determined for the wake-like signal that has been found.
Date of publication
01 Jan 1986
Number of Pages
14
DSTKIM No
86-02228
CANDIS No
96945
Format(s):
Hardcopy;Originator's fiche received by DSIS;Document Image stored on Optical Disk

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