Abstract: A method of scanning a 3D object includes: receiving a user's input to perform a scanning operation via a user interface, and in response using a light projector, projecting structured light onto the surface of a physical object about target positions on the surface of the physical object; and recording a sequence of first images of at least a portion of the surface of the physical object including a light scatter region illuminated by the structured light being projected about the target positions on the surface of the physical object using a camera. A trained image processing network configured during training to output data comprising a representation of positions being estimates of the target positions on the surface of the physical object in response to receiving one or more first images can be used.

Abstract: A method of scanning a 3D object includes: receiving a user's input to perform a scanning operation via a user interface, and in response using a light projector, projecting structured light onto the surface of a physical object about target positions on the surface of the physical object; and recording a sequence of first images of at least a portion of the surface of the physical object including a light scatter region illuminated by the structured light being projected about the target positions on the surface of the physical object using a camera. A trained image processing network configured during training to output data comprising a representation of positions being estimates of the target positions on the surface of the physical object in response to receiving one or more first images can be used.

Abstract: A method, and document scanner system, for correcting image values recorded by an optical document scanner with multiple color cameras arranged in a staggered configuration with overlap scan areas includes storing color correction values mapped to respective color index values, where a color correction value is computed from a color difference between a first color value and a second color value of the respective overlap sets, and correcting a third color value which is a color value from the second set of color image values by a color correction value which is looked up via a color index value determined from the third color value. Thereby color variations among staggered cameras are corrected.

Abstract: A method, and document scanner system, for correcting image values recorded by an optical document scanner with multiple color cameras arranged in a staggered configuration with overlap scan areas includes storing color correction values mapped to respective color index values, where a color correction value is computed from a color difference between a first color value and a second color value of the respective overlap sets, and correcting a third color value which is a color value from the second set of color image values by a color correction value which is looked up via a color index value determined from the third color value. Thereby color variations among staggered cameras are corrected.

Abstract: Disclosed is a method of processing image signals from a first and a second image sensor, both of a document scanner unit, where the first image sensor provides a first image, and the second image sensor provides a second image. The first and the second image are two-dimensional images wherein said first and second image are recorded at respective areas of a scanned medium, where a portion of the respective areas is recorded also by the other of the respective image sensors. Thereby image data from overlapping and non-overlapping areas are present in the first and the second image. The method comprises: correlating the first image with the second image, creating a correlation image and processing the correlation image to determine a displacement between the first and the second image. Consequently, a versatile calibration method is provided that can determine a displacement between the first and the second image in two dimensions.

Abstract: Disclosed is a method of processing signals from a large-format scanner comprising a first and a second image sensor that provide respective image signals recorded at respective areas of a scanned medium, where a portion of the respective areas is recorded also by the other of the respective image sensors, whereby image data from overlapping and non-overlapping areas are present in the respective signals; the method comprising: determining a first and a second level of intensity from image signals from the first and the second image sensor at the overlapping area, respectively; determining a compensation value by processing the first level of intensity and the second level of intensity to determine a discrepancy between the level of intensities; applying compensation values to image data from overlapping and non-overlapping areas to provide compensated image data to compensate for a discrepancy between levels of intensity from the first and the second image sensor.

Abstract: 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.

Abstract: Disclosed is a method of processing signals from a large-format scanner comprising a first and a second image sensor that provide respective image signals recorded at respective areas of a scanned medium, where a portion of the respective areas is recorded also by the other of the respective image sensors, whereby image data from overlapping and non-overlapping areas are present in the respective signals; the method comprising: determining a first and a second level of intensity from image signals from the first and the second image sensor at the overlapping area, respectively; determining a compensation value by processing the first level of intensity and the second level of intensity to determine a discrepancy between the level of intensities; applying compensation values to image data from overlapping and non-overlapping areas to provide compensated image data to compensate for a discrepancy between levels of intensity from the first and the second image sensor.

Abstract: 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.

Abstract: Disclosed is a method of processing image signals from a first and a second image sensor, both of a document scanner unit, where the first image sensor provides a first image, and the second image sensor provides a second image. The first and the second image are two-dimensional images wherein said first and second image are recorded at respective areas of a scanned medium, where a portion of the respective areas is recorded also by the other of the respective image sensors. Thereby image data from overlapping and non-overlapping areas are present in the first and the second image. The method comprises: correlating the first image with the second image, creating a correlation image and processing the correlation image to determine a displacement between the first and the second image. Consequently, a versatile calibration method is provided that can determine a displacement between the first and the second image in two dimensions.