Method and system for detecting concealed objects using handheld thermal imager
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United States of America Patent
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Mar 16, 2021
Grant Date -
Aug 16, 2018
app pub date -
Apr 13, 2018
filing date -
Mar 29, 2011
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Abstract
A method of detecting concealed objects using a thermal imager includes obtaining an output comprising a plurality of pixels representing a person, analyzing each pixel matching a contour of the person and excluding any pixel within a blob bounding box of the person, and determining whether a pixel address is represented in a pixel map. In addition, the method includes comparing a value of each remaining pixel to an allowable minimum threshold value representing a lower pre-defined body temperature, and comparing the value of each remaining pixel greater than or equal to the allowable minimum threshold value to an upper allowable threshold value representing an upper pre-defined body temperature. The method also includes excluding any of the remaining pixels within a range between the lower and upper pre-defined body temperatures to define final set of pixels, and calculating a pixel difference to indicate a severity of the difference.
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