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Method of determining PSF using multiple instances of a nominally similar scene

  • US 8,494,299 B2
  • Filed: 02/08/2010
  • Issued: 07/23/2013
  • Est. Priority Date: 11/10/2004
  • Status: Expired due to Fees
First Claim
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1. A portable digital image camera-enabled device, comprisingan image capture component for capturing digital images;

  • anda digital processing component including a processor for determining a camera motion blur function in a captured digital image based on a comparison of at least two sets of image data acquired at different times;

    a same sensor configured to acquire each of said at least two sets of image data, such that at least each pixel of a same portion of said same sensor captures at least a pixel of each of said at least two sets of image data, within a temporal range that includes times proximately before or after said exposure period, and such that the captured digital image and said at least one relatively low resolution reference image comprise approximately the same scene, andwherein the digital processing component is configured to compare a first set of said sets of image data to a second set of said sets of image data, the second set being taken outside the exposure period of the first set, andwherein the digital processing component is further arranged to determine to de-blur said captured digital image based on determining that the camera motion blur function indicates that sufficient blur exists; and

    wherein deblurring of the captured digital image by the digital processing component includes calculating the camera motion blur function including a point spread function (PSF) and de-convolving the captured digital image using the point spread function (PSF) only when said sufficient blur comprising more than a non-zero threshold blur is determined to exist in said captured digital image.

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