Method and apparatus for initiating subsequent exposures based on determination of motion blurring artifacts
First Claim
1. A digital image acquisition system, comprising an apparatus for capturing digital images and a digital processing component for initiating a new image capture upon determining that a threshold camera motion blur has occurred in a captured digital image based on a comparison of at least two sets of image data each acquired within a temporal range that includes an exposure period of the captured digital image, and times proximately before and after said exposure period, and of nominally the same scene as that of the captured digital image.
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Abstract
A digital image acquisition system includes a portable apparatus for capturing digital images and a digital processing component for detecting, analyzing, invoking subsequent image captures and informing the photographer regarding motion blur, and for reducing camera motion blur in an image captured by the apparatus. The digital processing component operates by comparing the image with at least one other image, for example a preview image, of nominally the same scene taken outside the exposure period of the main image. In one embodiment the digital processing component identifies at least one feature in a single preview image which is relatively less blurred than the corresponding feature in the main image, calculates a point spread function (PSF) in respect of such feature, and initiates a subsequent capture if determined that the motion blur exceeds a certain threshold. In another embodiment the digital processing determines the degree of blur by analyzing the motion blur in the captured image itself, and initiates a subsequent capture if determined that the motion blur exceeds a certain threshold. Such real time analysis may use the auto focusing mechanism to qualitatively determine the PSF.
138 Citations
79 Claims
- 1. A digital image acquisition system, comprising an apparatus for capturing digital images and a digital processing component for initiating a new image capture upon determining that a threshold camera motion blur has occurred in a captured digital image based on a comparison of at least two sets of image data each acquired within a temporal range that includes an exposure period of the captured digital image, and times proximately before and after said exposure period, and of nominally the same scene as that of the captured digital image.
- 34. In a digital image acquisition system including an apparatus for capturing digital images, a method comprising initiating a new image capture upon determining that a threshold camera motion blur has occurred in a captured digital image based on a comparison of at least two sets of image data each acquired within a temporal range that includes an exposure period of the captured digital image, and times proximately before and after said exposure period, and of nominally the same scene as that of the captured digital image.
- 49. One or more storage devices having digital code embedded therein for programming one or more processors to perform a camera motion blur determining method that comprises capturing digital images, and initiating a new image capture upon determining that a threshold camera motion blur has occurred in a captured digital image based on a comparison of at least two sets of image data each acquired within a temporal range that includes an exposure period of the captured digital image, and times proximately before and after said exposure period, and of nominally the same scene as that of the captured digital image.
- 64. A digital image acquisition system, comprising an apparatus for capturing digital images and a digital processing component for initiating a new image capture upon determining that a threshold camera motion blur has occurred in a captured digital image based on a real time analysis of the captured digital image.
- 75. A digital image acquisition system, comprising an apparatus for capturing digital images and a digital processing component for real time analysis of motion blurred artifacts using an auto-focusing mechanism of said digital image acquisition system.
Specification