Patent ID: 8774461
Filing Date: 2014-07-08
Classification: G06K

Abstract:
1. An apparatus for detecting concealed weapons disposed on a subject's body, the apparatus comprising: a millimeter wave camera having a field of view and operative to detect millimeter wave radiation within said field of view and further operative to provide a sequence of images about the periphery of the body; an image processing system coupled to the millimeter wave camera and operative to: said image processing operative to provide an output indicative of an identified object; wherein to detect valleys and ridges in the row evolution image, the image processing system is further operative to use a predetermined number of finite impulse response filters each of said predetermined number of finite impulse response filters operative to receive one of said plurality of row evolution images and wherein said image processing system being further operative to carry out a row-wise convolution with said one of said row evolution images and a column wise convolution with said one of said row evolution images resulting in a predetermined plurality of images, said image processing system being further operative to combine said predetermined plurality of images to determine the image of dominant local orientation.