Abstract: A method and apparatus for assessing a threat status of a piece of luggage. The method comprises the steps of scanning the piece of luggage with penetrating radiation to generate image data and processing the image data with a computing device to identify one or more objects represented by the image data. The method also includes further processing the image data to compensate the image data for interaction between the object and the penetrating radiation to produce compensated image data and then determine the threat status of the piece of luggage.

Abstract: The present invention discloses a method for decomposing a target pattern containing features to be printed on a wafer, into multiple patterns, the features having a plurality of patterns within a minimum pitch for processes utilized to image the target pattern. The method includes superposing a predefined kernel over a pixel, and moving the kernel from one pixel to another, the pixels representing the sub-patterns of the target pattern. Polarity of the kernel may be reversed when the pixel has a stored intensity value that is negative.