IMAGE ENHANCEMENT AND DISPLAY TECHNIQUES APPLIED TO SAR580 IMAGES OF SHIPS

Authors
  1. Rey, M.T.
  2. Vant, M.R.
Corporate Authors
Communications Research Centre, Ottawa ONT (CAN)
Abstract
At radar wavelengths, a ship appears as a collection of smooth sheets arranged to form flat plates, di- and trihedral corner reflectors. The returns from the corner reflectors are very large, and tend to dominate returns from weaker reflectors in the image. The dynamic range of the image can be as high as 90 dB. Such an image is difficult to display on the limited dynamic range of a display device, as the quantization effects of the device tend to obscure detail coming from lower brightness level regions of the image. In order to investigate the role played by weaker scatterers in image interpretation, enhancement techniques that emphasize lower level returns in relation to dominant targets can be applied to the images. The report discusses the properties of SAR ship returns, reviews the various image enhancement techniques applied to the images, and gives examples of enhanced ship imagery. TRUNCATED
Report Number
CRC-1421 — Technical Report (Final)
Date of publication
15 Apr 1987
Number of Pages
60
DSTKIM No
88-00101
CANDIS No
53346
Format(s):
Hardcopy;Originator's fiche received by DSIS

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