Patent ID: 7003177
Filing Date: 2006-02-21
Classification: G06T,H04N

Abstract:
1. A method for enhancing the resolution of an image sensing device, comprising the steps of: applying a periodically patterned mask to an image sensing device having a pixel sensitivity function, the device comprising a periodic array of detectors having at least one of a horizontal periodic spacing and a vertical periodic spacing, the periodically patterned mask having at least one of a horizontal period which is an integer multiple of said detectors' horizontal periodic spacing and a vertical period which is an integer multiple of the detectors' vertical periodic spacing, the mask modifying the pixel sensitivity function of the image sensing device, thereby to define a modified pixel sensitivity function of the device whose Fourier transform does not have zeros at frequencies that are between 0 and the maximal frequency at which no significant aliasing occurs; using the image sensing device with the mask to acquire multiple images of a scene from corresponding multiple fields of view related to one another by sub-pixel shifts, the multiple images defining sub-pixel samples; and combining the multiple images into an enhanced image of higher pixel resolution than the pixel resolutions of the multiple images, including: