METHOD AND APPARATUS TO CORRECT DIGITAL IMAGE BLUR DUE TO MOTION OF SUBJECT OR IMAGING DEVICE
First Claim
1. A method for use in imaging, comprising:
- capturing a plurality of sequential images, the sequential images being separated by short time intervals;
for each image in the plurality of images, detecting a location of a main subject;
aligning the plurality of images based on the locations of the main subjects; and
selectively combining the plurality of images to obtain a corrected image.
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Accused Products
Abstract
Signal processing techniques are applied to digital image data to remove the distortion caused by motion of the camera, or the movement of the subject being photographed, or defective optics, or optical distortion from other sources. When the image is captured, the effect of relative motion between the camera and the subject is that it transforms the true image into a blurred image according to a 2-dimensional transfer function. The 2-dimensional transfer function representing the motion is derived using blind estimation techniques or by using information from sensors that detect the motion. The transfer function is inverted and used to define a corrective filter. The filter is applied to the image and the blur due to the motion is removed, restoring the correct image. Another embodiment uses the transfer function to avoid blur by combining multiple consecutive images taken at a fast shutter speed.
92 Citations
18 Claims
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1. A method for use in imaging, comprising:
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capturing a plurality of sequential images, the sequential images being separated by short time intervals; for each image in the plurality of images, detecting a location of a main subject; aligning the plurality of images based on the locations of the main subjects; and selectively combining the plurality of images to obtain a corrected image. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A camera, comprising:
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a recording medium configured to capture a plurality of sequential images, the sequential images being separated by short time intervals; a memory, configured to store the plurality of sequential images; a processor configured to detect a location of a main subject in each image, to align the images based on the locations of the main subjects, and to selectively combine the images to obtain a corrected image. - View Dependent Claims (8, 9, 10, 11, 12, 15, 16, 17, 18)
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13. A computing device, comprising:
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a memory, configured to store a plurality of sequential images, the sequential images being separated by short time intervals; a processor configured to detecting a location of a main subject in each image, to align the images based on the locations of the main subjects, and to selectively combine the images to obtain a corrected image. - View Dependent Claims (14)
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Specification