Target Detection Method from Partial Image of Target
Patent, Filed 10 Apr 1996, patented 10 Aug 1999
DEPARTMENT OF THE NAVY WASHINGTON DC
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A method for detecting a target partially obscured in the image. Sensor data from an area of concern in converted to image data indexed to represent the area. Test signature data is provided representative of the image of a portion of the type of target of interest. The image data is normalized and filtered using the test signature data to increase the signal to noise ratio of portions of the normalized data that approximate the test signature data. The so-filtered data is digitized to a logic level 1 or 0 based upon threshold criteria. The resulting digitized data is convolved with a unity weighting function window to generate correspondingly indexed density data. The density data values whose first conditional probability is at least p times more likely than the second conditional probability are then converted to a logic level 1 white the density data values whose first conditional probability is less than p times more likely than the second conditional probability are converted to a logic level 0.
- Target Direction, Range and Position Finding