Abstract: A method of extrapolating a bidimensional grey-level image using a radiography device.

Abstract: A method of extrapolating a bidimensional grey-level image using a radiography device.

Abstract: A derivation procedure for a three-dimensional digital mask from a series of two-dimensional masks in a radiographic device containing a source (S) of X-rays, a means of recording and a volume of interest hat contains the object to be X-rayed located between the source (S) and the means of recording consists of an extrapolation of each mask M?2 includes determining a last segment lfin beyond the limits of the means of recording; and working out a two-dimensional mask M? associated with a position S? of the source, for any angle ? included in the angular range ?2 to ?1 (a position close to ?2). For every parallel segment l located between segment d (or d? respectively) and segment lfin, the procedure further includes deriving a three-dimensional mask (21) of the object for each voxel at the intersection of plane P1?2 and the volume of interest; and projecting the three-dimensional mask onto the segment l.

Abstract: A housing for protecting hand held electronic devices having buttons or controls thereon from damage due to impacts or falls. The housing is made of an elastomer, preferably polyurethane, PVC, or latex, and having a shore number in the range of A10-A30 shores, which is flexible and stretchable to substantially three times its normal size. The housing has a base and four sides, wherein two of the four sides are substantially long and parallel to each other, and the other two of the four sides are substantially shorter than the long sides and parallel to each other as well. On at least one of the substantially shorter sides, there is located a transverse slot of a predetermined length for passage of signals from the electronic device to a receptor if needed. On at least one of the two long parallel sides there is located a transverse groove of predetermined length. A multiplicity of cylindrical projections are located on one side of the base and integral with the base.