CHANGE DETECTION USING "BLINK" COMPARISON OF ROUTE SURVEY SONAR IMAGERY

Authors
  1. Poeckert, R.H.
Corporate Authors
Defence Research Establishment Pacific, Victoria BC (CAN)
Abstract
The detection of mine-like objects on the sea bottom is particularly difficult in an area that has a high density of naturally occurring mine-sized objects (rocks). Conventional mine hunting techniques rely on an object's sonar signature to differentiate between mine-like objects and rocks. An alternative technique is described in which two or more sonar images of the sea bottom are visually compared by overlaying them on a CRT screen and displaying them alternately in rapid succession ("blinking"). This blinking technique effectively uses the human visual system's ability to detect change and differences in sea bottom objects.
Report Number
DREP-TM-91-21 — Technical Memorandum
Date of publication
15 Dec 1991
Number of Pages
27
DSTKIM No
92-01299
CANDIS No
104190
Format(s):
Hardcopy;Originator's fiche received by DSIS

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