Abstract: In a method for navigating an undersea vehicle (12), navigation data about position, orientation, and absolute vehicle speed of the undersea vehicle (12) are determined from measurement data delivered by navigation sensors (17) via a navigation filter (18) which incorporates the measurement values of a Doppler log (14). To achieve a highly accurate tracking of the course taken by the undersea vehicle (12), particularly during submerging and surfacing phases, the stretch of water (10) traversed by the undersea vehicle (12) is divided into regions (13) which at least in the vertically oriented z-axis have a finite dimension within a Cartesian coordinate system (11).

Abstract: A method for determining the change in position of an object in an item of luggage using two X-ray images. The method includes allocating points to individual features in each X-ray image, and extracting the individual features to produce a set of extracted points for each X-ray image. The method includes searching for clusters in each set of extracted points. For each X-ray image a valuation function that displays different values when points of a cluster are close than when points of the cluster are not close is used to determine the proximity of each cluster. This permits analysis of the movement of the object to be performed by observing the proximities of the clusters.

Abstract: The invention relates to a method of examining an item of luggage 1, in which an X-ray fluoroscopic image of the whole item of luggage 1 is produced first, then planiform suspect regions 4, 5, 6 in the X-ray fluoroscopic image are determined and the scanning time during the following production of an X-ray diffraction image depends on whether the X-ray beam is located specifically in a planiform suspect region 4, 5, 6, wherein the scanning time heads towards zero outside a planiform suspect region 4, 5, 6 and lasts long enough inside a planiform suspect region 4, 5, 6 to obtain an informative X-ray diffraction image.

Abstract: In a method for navigating an undersea vehicle (12), navigation data about position, orientation, and absolute vehicle speed of the undersea vehicle (12) are determined from measurement data delivered by navigation sensors (17) via a navigation filter (18) which incorporates the measurement values of a Doppler log (14). To achieve a highly accurate tracking of the course taken by the undersea vehicle (12), particularly during submerging and surfacing phases, the stretch of water (10) traversed by the undersea vehicle (12) is divided into regions (13) which at least in the vertically oriented z-axis have a finite dimension within a Cartesian coordinate system (11).

Abstract: The invention relates to a method of examining an item of luggage 1, in which an X-ray fluoroscopic image of the whole item of luggage 1 is produced first, then planiform suspect regions 4, 5, 6 in the X-ray fluoroscopic image are determined and the scanning time during the following production of an X-ray diffraction image depends on whether the X-ray beam is located specifically in a planiform suspect region 4, 5, 6, wherein the scanning time heads towards zero outside a planiform suspect region 4, 5, 6 and lasts long enough inside a planiform suspect region 4, 5, 6 to obtain an informative X-ray diffraction image

Abstract: The invention relates to a method for determining the change in position of an item of luggage in order to examine a suspect region in this item of luggage.

Abstract: A method for the rectification of an X-ray picture (2a, 2b) of an item of luggage (2) during luggage screening with the following steps: recording the X-ray picture (2a, 2b) of the item of luggage (2) by means of a X-ray radioscopy device (11, 11a); geometric rescaling (7) of the X-ray picture (2a, 2b) whilst taking into consideration only the geometric data of the mapping geometry of the X-ray radioscopy device (11, 11a) and also the image data of the recording of the X-ray picture (2a, 2b) of the item of luggage (2), the beam path (10) being tracked for each detector element onto a respective preset plane; transmission of the rescaled, de-skewed X-ray picture (8a, 8b) to a display or image-processing apparatus (9).

Abstract: The invention relates to a method for determining the change in position of an object (200, 210) in an item of luggage (100) by means of two X-ray images, individual feature points (1-15) being allocated in each X-ray image and the features being extracted such that a set of points results in each case; a search for clusters (130-150) being carried out in each set of points; the proximity being determined in each X-ray image by means of a valuation function that displays different values when points (1-15) are very close than when points (1-15) are less close; and an analysis of the movement of the object (200) being carried out by observation of the proximities of the clusters (130-150).

Abstract: A method for the rectification of an X-ray picture (2a, 2b) of an item of luggage (2) during luggage screening with the following steps: recording the X-ray picture (2a, 2b) of the item of luggage (2) by means of a X-ray radioscopy device (11, 11a); geometric rescaling (7) of the X-ray picture (2a, 2b) whilst taking into consideration only the geometric data of the mapping geometry of the X-ray radioscopy device (11, 11a) and also the image data of the recording of the X-ray picture (2a, 2b) of the item of luggage (2), the beam path (10) being tracked for each detector element onto a respective preset plane; transmission of the rescaled, de-skewed X-ray picture (8a, 8b) to a display or image-processing apparatus (9).

Abstract: The invention relates to a method for determining the change in position of an item of luggage in order to examine a suspect region in this item of luggage.