Abstract

There is described an imaging device for capturing images of at least portions of moving objects. The system comprises a stationary camera lens (1 1 ) configured for reproducing an image of at least a portion of each moving object (10) in an imaging plane when said object (10) moves across a capturing region (12). The device further comprises at least one image sensor (13; 23; 33; 43; 53) located in the imaging plane for receiving the reproduced image of the at least a portion of the corresponding moving object (10) and converting said image into electronic signals. The at least one image sensor (13; 23; 33; 43; 53) is mounted on a sensor support (14; 24; 34; 44; 54) adapted to be actuated in a manner that the at least one image sensor (13; 23; 33; 43; 53) is moved in the imaging plane relative to the stationary camera lens (1 1 ), and in a manner that the motion of said at least one image sensor (13; 23; 33; 43; 53) is synchronized with the motion of the moving object (10) to be captured. This ensures that there is substantially no relative movement between the reproduced image in the imaging plane and the image sensor (13; 23; 33; 43; 53) when said moving object (10) moves across the capturing region (12). As a result motion blur of the captured image of the at least a portion of each moving object (10) is prevented or significantly reduced.

IPC Classes  ?

• H04N 1/195 - Scanning arrangements using multi-element arrays the array comprising a two-dimensional array
• H04N 5/225 - Television cameras
• H04N 5/232 - Devices for controlling television cameras, e.g. remote control
• G01N 21/84 - Systems specially adapted for particular applications
• H04N 1/00 - Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmissionDetails thereof
• H04N 1/14 - Scanning arrangements using the sheet-feed movement as the slow scanning component using a rotating endless belt carrying the scanning heads

Abstract

Method for marking graphical elements comprising the steps of selecting at least three coherent edge portions (6) of a graphical element (1), wherein the relative orientation of the coherent edge portions (6) is constant and/or smoothly varies along their entire length, the coherent edge portions (6) comprising at least two reference edge portions (66) and one edge portion to mark (67); defining a family of smooth and non-intersecting curves (65), said curves (65) intersecting all of the coherent edge portions (66, 67); shifting the edge portion to mark (67) along the curves (65) relative to the reference edge portions (66); and method for detecting a marking in a graphical element, comprising the steps of locating an encoding area (7) in a digital image of a graphical element (1 ); retrieving at least two reference edge portions (66) and at least one modified edge portion (68) of the encoding area (7) in the digital image; and determining the relative position of the modified edge portion (68) relative to the reference edge portions (66).

IPC Classes  ?

• G06T 1/00 - General purpose image data processing