The invention relates to a sensor and a method for checking value documents (2), in particular bank notes, and a value document processing apparatus (1). The sensor has a detection device (3) which is configured to detect electromagnetic radiation, which emanates from a value document (2) to be checked, in at least two different spectral ranges in a locally resolved manner, wherein a plurality of image points are obtained, to each of which at least two intensity values are assigned. Furthermore, the sensor has a processing device (7), which is configured i) to assign one feature point located in a feature space to a plurality of image points in each case, said feature point being defined by at least two feature point coordinates which are based on the intensity values assigned to the respective image point and/or adjacent image points, ii) for feature points which lie outside a feature region in the feature space specified for the respective image point by a curve or area, determining position information by way of which the position of the respective feature point relative to the feature region is characterised, and iii) assigning the feature points lying outside the feature region to different defect classes depending on the determined position information, said defect classes characterising different types of defects on the value document.
- 출원번호 : DE2024/100389
- 출원인 : GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH
- 특허번호 :
- IPC : G07D-007/12(2016.01);G07D-007/1205(2016.01);G07D-007/183(2016.01);G07D-007/185(2016.01);G07D-007/187(2016.01);