Maryland's Defense Patent Database

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Method for processing radiographic images of rapidly moving objects such as shaped charge jet particles

Patent image
NSWCCD

According to exemplary inventive practice, a region containing an object of interest, such as a jet particle of a shaped charge, is extracted from a raw radiographic image. This regional image is filtered, and its pixel intensity range is rescaled to increase contrast. The filtered, re-contrasted image is converted to a binary image by setting a threshold pixel intensity, and assigning a binary pixel intensity of either 1 or 0 to each pixel, depending on its scaled pixel intensity versus the threshold pixel intensity. The binary image is inverted and filtered. Contiguities of binary-one pixels to binary-zero pixels in the inverted, filtered binary image provide the basis for delineating the outline of the object. The object's outline is superimposed on the object's portrayal in the original regional image, to assess the degree of match. Various threshold pixel intensities can be applied in plural iterations until a sufficient match is obtained.

Inventors: 
Walther, Joseph R.; Painter, James E.
Patent Number: 
Technical domain: 
IT and Software
FIle Date: 
2013-10-01
Grant Date: 
2015-08-11
Grant time: 
679 days
Grant time percentile rank: 
12
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY