Image scanning device and method
AssigneeHewlett-Packard Company
InventorsStephen Bernard Pollard, Richard Oliver Kahn
Life of this patent
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Abstract
The present invention relates to a method of reconstructing an image from data captured by a sensor, and is particularly applicable to the case of sequential capture in relative movement between a scanning device and the original image. The seanning device comprises navigation means for detecting the position of the sensor relative to the original image. A pixel grid for the reconstructed image is determined, and correspondence between the pixel grid and the sensor data is identified using sensor position detection data. The intensity of pixels is determined from sensor data selected as relevant to the pixel under consideration.
Claims21
A method of reconstructing an image captured as image data in a sensor and position data in a navigation means, comprising:
- defining a pixel grid for a reconstructed image;
- using position data to identify correspondence between sensor data and the pixel data and thereby to identify in the pixel grid active pixels;
- and
- determining the intensity of active pixels in the pixel grid from image data obtained at a plurality of sensor positions and selected as relevant to each active pixel, respectively, for which the intensity is to be determined.
A scanning device having a sensor for capturing image data and a navigation element for capturing position data, the scanning device being further adapted to define a pixel grid for a reconstructed image;
- use the position data to identify correspondence between sensor data and the pixel grid and thereby to identify in the pixel grid active pixels;
- and to determine the intensity of active pixels in the pixel grid from image data obtained at a plurality of sensor positions and selected as relevant to each active pixel, respectively, for which the intensity is to be determined.
A scanning system, comprising a scanning device, having a sensor for capturing image data and a navigation element for capturing position data, and a computational device adapted to receive image data and position data from the scanning device, the computational device being further adapted to define a pixel grid for a reconstructed image;
- use the position data to identify correspondence between sensor data and the pixel grid and thereby to identify in the pixel grid active pixels;
- and to determine the intensity of active pixels in the pixel grid from image data obtained at a plurality of sensor positions and selected as relevant to each active pixel, respectively, for which the intensity is to be determined.
Dependencies are inferred from the claim text.