Method for de-skewing an X-ray picture of an item of luggage

1. Method for de-skewing an X-ray picture ( 2 a , 2 b ) of an item of luggage ( 2 ) during luggage screening with the following steps:

recording the X-ray picture ( 2 a , 2 b ) of the item of luggage ( 2 ) by means of an X-ray radioscopy device ( 11 , 11 a );

geometric rescaling ( 7 ) of the X-ray picture ( 2 a , 2 b ) whilst taking into consideration only the geometric data of the mapping geometry of the X-ray radioscopy device ( 11 , 11 a ) and also the picture data of the recording of the X-ray picture ( 2 a , 2 b ) of the item of luggage ( 2 ), the beam path ( 10 ) being tracked for each detector element onto a respective preset plane ( 14 );

transmission of the rescaled, de-skewed X-ray picture ( 8 a , 8 b ) to a display or image-processing apparatus ( 9 );

wherein the height of the item of luggage ( 2 ) is determined by a light barrier ( 13 );

wherein the preset plane ( 14 ) runs at half the height of the item of luggage ( 2 ) parallel to the support surface ( 12 ).

2. The method of claim 1 , wherein the beam path ( 10 ) is tracked onto a single plane.

3. The method of claim 1 , wherein the X-ray radioscopy device ( 11 , 11 a ) has a line detector ( 3 , 3 a ).

4. The method of claim 1 , wherein the X-ray picture ( 2 a , 2 b ) is subjected to an optical calibration (4) before the geometric rescaling ( 7 ).

5. The method of claim 3 , wherein the line detector ( 3 , 3 a ) includes an L-shaped detector.