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AssigneeContex A/S
InventorsGerard Verhaegh, Troels Pedersen, Lars Errebo Larsen, Jens Kærgaard Nielsen
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Disclosed is a method of scanning a physical medium by an image scanner comprising a first image sensor having a plurality of image sensor elements that provide an image, and a first light source associated with the first image sensor, the method comprising: guiding light from the first light source towards a first group of image sensor element(s); recording a first light calibration value using the first group of image sensor element(s). The method further comprises repeating the above step by using a second group of image sensor element(s) thus resulting in a second light calibration value; generating a first compensation signal for image sensor elements positioned between the first and the second group of image sensor element(s) by processing the first and the second light calibration value together; compensating said image signals provided by the first image sensor using the first compensation signal.
A method of scanning a physical medium by an image scanner comprising a first image sensor having a plurality of image sensor elements that provide an image signal recorded at a first area of the physical medium, and a first light source associated with said first image sensor, said method comprising:
An apparatus for scanning comprising a first image sensor having a plurality of image sensor elements that provide an image signal recorded at a first area of a physical medium, a first light source associated with said first image sensor, a first light calibration unit configured to guide light from said first light source towards a first group of image sensor element(s) positioned in a first end of said first image sensor, a second light calibration unit configured to guide light from said first light source towards a second group of image sensor element(s) positioned in a second end of said first image sensor, and a processing unit for:
A method of processing signals from a first image sensor having a plurality of image sensor elements that provide an image signal recorded at an first area of a physical medium, said method comprising:
A method of scanning a physical medium by an image scanner comprising a first image sensor having a plurality of image sensor elements that provide an image signal recorded at an first area of a physical medium, a first light source associated with said first image sensor, and a first shielding structure associated with said first image sensor shielding a third group of image sensor elements from direct and reflected light from the first light source and any other light sources, said method comprising:
Dependencies are inferred from the claim text.