Adaptive PSF estimation technique using a sharp preview and a blurred image
First Claim
Patent Images
1. A method of adaptive motion estimation and deblurring of acquired digital images, comprising:
- acquiring multiple digital images with a moving digital image acquisition device, including a relatively sharp, underexposed reference image and a blurred image;
choosing offset grid points from an offset grid in an offset values space based on data of the digital images acquired with the moving device;
applying an iterative process using a variable sized window;
stopping the process when an outer low importance border is detected;
estimating an approximate point spread function (PSF) one or more times corresponding to the moving of the device during the acquiring of the multiple digital images based on the choosing, applying and stopping; and
deblurring at least one of the digital images using the approximate PSF.
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Abstract
An adaptive motion estimation and deblurring technique for acquired digital images includes acquiring multiple digital images with a moving digital image acquisition device that includes an image sensor, including a relatively sharp, underexposed reference image and a blurred image. And initial approximate point spread function (PSF) is estimated corresponding to the moving of the device. A different DC offset point is determined and a second PSF is calculated based on the different DC offset point.
30 Citations
18 Claims
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1. A method of adaptive motion estimation and deblurring of acquired digital images, comprising:
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acquiring multiple digital images with a moving digital image acquisition device, including a relatively sharp, underexposed reference image and a blurred image; choosing offset grid points from an offset grid in an offset values space based on data of the digital images acquired with the moving device; applying an iterative process using a variable sized window; stopping the process when an outer low importance border is detected; estimating an approximate point spread function (PSF) one or more times corresponding to the moving of the device during the acquiring of the multiple digital images based on the choosing, applying and stopping; and deblurring at least one of the digital images using the approximate PSF. - View Dependent Claims (2, 3, 4, 5, 6, 14, 15, 16, 17, 18)
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7. One or more non-transitory computer readable media having code embedded therein for programming one or more processors to perform a method of adaptive motion estimation and deblurring of acquired digital images, wherein the method comprises:
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acquiring multiple digital images with a moving digital image acquisition device, including a relatively sharp, underexposed reference image and a blurred image; choosing offset grid points from an offset grid in an offset values space based on data of the digital images acquired with the moving device; applying an iterative process using a variable sized window; stopping the process when an outer low importance border is detected; estimating an approximate point spread function (PSF) one or more times corresponding to the moving of the device during the acquiring of the multiple digital images based on the choosing, applying and stopping; and deblurring at least one of the digital images using the approximate PSF. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A digital image acquisition device, comprising:
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a lens and an image sensor for acquiring a digital image; a processor; and one or more processor-readable media having code embedded therein for programming the processor to perform a method of adaptive motion estimation and deblurring of acquired digital images, wherein the method comprises; acquiring multiple digital images with a moving digital image acquisition device, including a relatively sharp, underexposed reference image and a blurred image; choosing offset grid points from an offset grid in an offset values space based on data of the digital images acquired with the moving device; applying an iterative process using a variable sized window; stopping the process when an outer low importance border is detected; estimating an approximate point spread function (PSF) one or more times corresponding to the moving of the device during the acquiring of the multiple digital images based on the choosing, applying and stopping; and deblurring at least one of the digital images based on the approximate PSF.
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Specification