Image Processing Method and Apparatus
First Claim
1. An image processing method to process a first relatively underexposed and sharp image of a scene, and a second relatively well exposed and blurred image nominally of the same scene, said first and second images being derived from respective image sources, said method comprising:
- providing a portion of said relatively first underexposed image as an input signal to an adaptive filter;
providing a corresponding portion of said second relatively well exposed image as a desired signal to said adaptive filter;
producing an output signal from said input signal and said desired signal;
constructing a first filtered image from said output signal that is relatively less blurred than said second image; and
displaying, transmitting, projecting or storing the first filtered image or a further processed version, or combinations thereof
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Accused Products
Abstract
An image processing apparatus is arranged to process a first relatively underexposed and sharp image of a scene, and a second relatively well exposed and blurred image, nominally of the same scene, the first and second images being derived from respective image sources. The apparatus provides a portion of the relatively first underexposed image as an input signal to an adaptive filter; and a corresponding portion of the second relatively well exposed image as a desired signal to the adaptive filter. The adaptive filter produces an output signal from the input signal and the desired signal; and an image generator constructs a first filtered image from the output signal, relatively less blurred than the second image.
180 Citations
79 Claims
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1. An image processing method to process a first relatively underexposed and sharp image of a scene, and a second relatively well exposed and blurred image nominally of the same scene, said first and second images being derived from respective image sources, said method comprising:
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providing a portion of said relatively first underexposed image as an input signal to an adaptive filter; providing a corresponding portion of said second relatively well exposed image as a desired signal to said adaptive filter; producing an output signal from said input signal and said desired signal; constructing a first filtered image from said output signal that is relatively less blurred than said second image; and displaying, transmitting, projecting or storing the first filtered image or a further processed version, or combinations thereof - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An image processing method comprising:
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obtaining a first relatively underexposed and sharp image of a scene; obtaining a second relatively well exposed and blurred image, nominally of the same scene, said first and second images being derived from respective image sources; providing a portion of said relatively first underexposed image as an input signal to an adaptive filter; providing a corresponding portion of said second relatively well exposed image as a desired signal to said adaptive filter; adaptive filtering said input signal to produce an output signal; constructing a first filtered image from said output signal, relatively less blurred than said second image; and displaying, transmitting, projecting or storing the first filtered image or a further processed version, or combinations thereof - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. An image processing apparatus arranged to process a first relatively underexposed and sharp image of a scene, and a second relatively well exposed and blurred image, nominally of the same scene, said first and second images being derived from respective image sources, said apparatus comprising:
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a processor; one or more processor-readable media embedded with code for programming the processor to provide a portion of said relatively first underexposed image as an input signal to an adaptive filter, and to provide a corresponding portion of said second relatively well exposed image as a desired signal to said adaptive filter; an adaptive filter arranged to produce an output signal from said input signal and said desired signal; and an image generator arranged to construct a first filtered image from said output signal, relatively less blurred than said second image.
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28. One or more processor-readable media having embedded therein processor-readable code for programming a processor to perform an image processing method to process a first relatively underexposed and sharp image of a scene, and a second relatively well exposed and blurred image nominally of the same scene, said first and second images being derived from respective image sources, said method comprising:
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providing a portion of said relatively first underexposed image as an input signal to an adaptive filter; providing a corresponding portion of said second relatively well exposed image as a desired signal to said adaptive filter; producing an output signal from said input signal and said desired signal; constructing a first filtered image from said output signal that is relatively less blurred than said second image. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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42. One or more processor-readable media having embedded therein processor-readable code for programming a processor to perform an image processing method that comprises:
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obtaining a first relatively underexposed and sharp image of a scene; obtaining a second relatively well exposed and blurred image, nominally of the same scene, said first and second images being derived from respective image sources; providing a portion of said relatively first underexposed image as an input signal to an adaptive filter; providing a corresponding portion of said second relatively well exposed image as a desired signal to said adaptive filter; adaptive filtering said input signal to produce an output signal; and constructing a first filtered image from said output signal, relatively less blurred than said second image. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
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54. A portable digital image acquisition device, comprising a lens and image sensor for capturing a digital image, and a processor, and one or more processor-readable media having processor-readable code embedded therein for programming the processor to perform a method of processes a first relatively underexposed and sharp image of a scene, and a second relatively well exposed and blurred image nominally of the same scene, wherein the first and second images are derived from respective image sources, and wherein the method further comprises:
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providing a portion of said relatively first underexposed image as an input signal to an adaptive filter; providing a corresponding portion of said second relatively well exposed image as a desired signal to said adaptive filter; producing an output signal from said input signal and said desired signal; constructing a first filtered image from said output signal that is relatively less blurred than said second image; and displaying, transmitting, projecting or storing the first filtered image or a further processed version, or combinations thereof. - View Dependent Claims (55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67)
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68. A portable digital image acquisition device, comprising a lens and image sensor for capturing a digital image, and a processor, and one or more processor-readable media having processor-readable code embedded therein for programming the processor to perform an image processing method comprising:
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obtaining a first relatively underexposed and sharp image of a scene; obtaining a second relatively well exposed and blurred image, nominally of the same scene, said first and second images being derived from respective image sources; providing a portion of said relatively first underexposed image as an input signal to an adaptive filter; providing a corresponding portion of said second relatively well exposed image as a desired signal to said adaptive filter; adaptive filtering said input signal to produce an output signal; and constructing a first filtered image from said output signal, relatively less blurred than said second image. - View Dependent Claims (69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79)
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Specification