IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0274057
(2008-11-19)
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등록번호 |
US-8630484
(2014-01-14)
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발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
3 인용 특허 :
61 |
초록
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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
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.
대표청구항
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1. A method, comprising: capturing, at a recording medium, a plurality of sequential images, wherein the images are two-dimensional photographic images;detecting, by a processor, a main subject in each of the images in the plurality of images, wherein the main subject is the same in each of the imag
1. A method, comprising: capturing, at a recording medium, a plurality of sequential images, wherein the images are two-dimensional photographic images;detecting, by a processor, a main subject in each of the images in the plurality of images, wherein the main subject is the same in each of the images;shifting, by the processor, each of the images vertically and horizontally such that the main subject is aligned at a same location in each of the shifted images; andcombining, by the processor, the shifted images to obtain a corrected image, wherein the corrected image is a two-dimensional photographic image, andwherein the combining includes determining, for each image point in the corrected image, a pixel value for the image point based on pixel values in the shifted images at the image point. 2. The method of claim 1 wherein the plurality of sequential images is captured using a highest available shutter speed. 3. The method of claim 1 wherein the detecting the main subject is performed using a pattern recognition technique. 4. The method of claim 1 wherein the detecting the main subject is performed using an image segmentation technique. 5. The method of claim 1 wherein the detecting the main subject includes tracking a signal that is transmitted from the main subject. 6. The method of claim 1 wherein the detecting the location of the main subject is performed based on input from a user. 7. The method of claim 1, wherein the determining the pixel value for each image point in the corrected image includes adding pixel values of the shifted images at the image point or averaging pixel values of the shifted images at the image point. 8. An apparatus, comprising: a recording medium configured to capture a plurality of sequential images, wherein the images are two-dimensional photographic images;a memory, configured to store the images;a processor configured: to detect a main subject in each of the images in the plurality of images, wherein the main subject is the same in each of the images;to shift each of the images vertically and horizontally such that the main subject is aligned at a same location in each of the shifted images; andto combine the shifted images to obtain a corrected image, wherein the corrected image is a two-dimensional photographic image, andwherein, for each image point in the corrected image, a pixel value for the image point is based on pixel values from the shifted images at the image point. 9. The apparatus of claim 8 wherein the images are captured using a highest available shutter speed. 10. The apparatus of claim 8 wherein the processor is configured to detect the main subject using a pattern recognition technique. 11. The apparatus of claim 8 wherein the processor is configured to detect the main subject using an image segmentation technique. 12. The apparatus of claim 8 wherein the processor is configured to detect the main subject based on a tracking a signal that is transmitted from the main subject. 13. The apparatus of claim 8, wherein the processor is configured to detect the main subject based on input from a user. 14. The camera of claim 8, wherein the determining the pixel value for each image point in the corrected image includes adding pixel values of the shifted images at the image point or averaging pixel values of the shifted images at the image point. 15. A computing device, comprising: a memory, configured to store a plurality of sequential images, wherein the images are two-dimensional photographic images;a processor configured: to detect a main subject for each of the images in the plurality of images, wherein the main subject is the same in each of the images;to shift each of the images vertically and horizontally such that the main subject is aligned at a same location in each of the shifted images; andto combine the shifted images to obtain a corrected image, wherein the corrected image is a two-dimensional photographic image, andwherein, for each image point in the corrected image, a pixel value for the image point is based on pixel values from the shifted images at the image point. 16. The computing device of claim 15 wherein the images are captured using a highest available shutter speed. 17. The computing device of claim 15 wherein the processor is configured to detect the main subject using a pattern recognition technique. 18. The computing device of claim 15 wherein the processor is configured to detect the main subject using an image segmentation technique. 19. The computing device of claim 15 wherein the processor is configured to detect the main subject by tracking a signal that is transmitted from the main subject. 20. The computing device of claim 15 wherein the processor is configured to detect the main subject based on input from a user. 21. The computing device of claim 15, wherein the determining the pixel value for each image point in the corrected image includes adding pixel values of the shifted images at the image point or averaging pixel values of the shifted images at the image point. 22. A method comprising: recording, at a recording medium, a plurality of images, wherein the images are two-dimensional photographic images;detecting, by a processor, a main subject in each of the images in the plurality of images;shifting, by the processor, the images such that the main subject is placed at a same location in each of the shifted images; andcombining, by the processor, the shifted images to obtain a corrected image, wherein the corrected image is a two-dimensional photographic image,wherein the combining includes determining, for each image point in the corrected image, a pixel value for the image point based on pixel values in the shifted images at the image point. 23. An apparatus, comprising: a recording medium configured to record a plurality of images, wherein the images are two-dimensional photographic images;a memory, configured to store the images;a processor configured: to detect a main subject in each of the images in the plurality of images;to shift the images such that the main subject is placed at a same location in each of the shifted images; andto combine the shifted images to obtain a corrected image, wherein the corrected image is a two-dimensional photographic image,wherein, for each image point in the corrected image, a pixel value for the image point is based on pixel values from the shifted images at the image point. 24. A computing device, comprising: a memory, configured to store a plurality of images, wherein the images are two-dimensional photographic images;a processor configured: to detect a main subject in each of the images in the plurality of images;to shift the images such that the main subject is placed at a same location in each of the shifted images; andto combine the shifted images to obtain a corrected image, wherein the corrected image is a two-dimensional photographic image,wherein, for each image point in the corrected image, a pixel value for the image point is based on pixel values from the shifted images at the image point. 25. A method, comprising: capturing, at a recording medium, a plurality of sequential images, wherein the images are two-dimensional photographic images;receiving, from a subject of the images, a tracking signal that is transmitted from the subject and indicates a location of the subject;shifting, by a processor, each of the plurality of sequential images vertically and horizontally such that the subject is aligned at a same location in each of the shifted images; andcombining, by the processor, the shifted images to obtain a corrected image, wherein the corrected image is a two-dimensional photographic image, andwherein the combining includes determining, for each image point in the corrected image, a pixel value for the image point based on pixel values in the shifted images at the image point. 26. An apparatus, comprising: a recording medium configured to capture a plurality of images, wherein the images are two-dimensional photographic images;a receiver configured to receive, from a subject of the images, a tracking signal that is transmitted from the subject and indicates a location of the subject; anda processor configured to: shift each of the plurality of images vertically and horizontally such that the subject is aligned at a same location in each of the shifted images; andcombine the shifted images to obtain a corrected image, wherein the corrected image is a two-dimensional photographic image, andwherein, for each image point in the corrected image, a pixel value for the image point is based on pixel values in the shifted images at the image point. 27. A method for use in a device that includes a viewfinder, a recording medium, and a processor, the method comprising: displaying, at the viewfinder, an image;receiving, at the processor, user input data that designates a subject in the image;capturing, at the recording medium, a plurality of images, wherein the images are two-dimensional photographic images and include the designated subject;shifting, by the processor, each of the plurality of images vertically and horizontally such that the designated subject is aligned at a same location in each of the shifted images; andcombining, by the processor, the shifted images to obtain a corrected image, wherein the corrected image is a two-dimensional photographic image. 28. An apparatus, comprising: a viewfinder configured to display an image;a processor configured to receive user input data that designates a subject in the image; anda recording medium configured to capture a plurality of images, wherein the images are two-dimensional photographic images and include the designated subject;wherein the processor is further configured to: shift each of the plurality of images vertically and horizontally such that the designated subject is aligned at a same location in each of the shifted images; andcombine the shifted images to obtain a corrected image, wherein the corrected image is a two-dimensional photographic image. 29. A method, comprising: capturing, at a recording medium, a plurality of images, wherein the images are two-dimensional photographic images,wherein the images include a main subject that is the same in each of the images, andwherein the images include a first image and a plurality of subsequent images;detecting, by a processor, a location of the main subject in each of the images;generating, by the processor, a final image based on the images, wherein the generating the final image includes, for each of the plurality of subsequent images: shifting the subsequent image such that the location of the main subject in the shifted subsequent image is the same as the location of the main subject in the first image; andcombining the shifted subsequent image with the first image. 30. An apparatus, comprising: a recording medium configured to capture a plurality of images, wherein the images are two-dimensional photographic images,wherein the images include a main subject that is the same in each of the images, andwherein the images include a first image and a plurality of subsequent images; anda processor configured to: detect a location of the main subject in each of the images;shift each of the subsequent images such that, for each shifted subsequent image, the location of the main subject in the shifted subsequent image is the same as the location of the main subject in the first image; andgenerate a final image based on the images by, for each of the plurality of subsequent images: shifting the subsequent image such that the location of the main subject in the shifted subsequent image is the same as the location of the main subject in the first image; andcombining the shifted subsequent image with the first image.
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