APPARATUS AND METHOD FOR OBTAINING MOTION ADAPTIVE HIGH DYNAMIC RANGE IMAGE
First Claim
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1. An apparatus for obtaining a motion adaptive high dynamic range image, the apparatus comprising:
- a motion calculation unit configured to;
receive a first image and a second image that are taken using different exposure times; and
calculate a motion degree of the second image by comparing the first image with the second image;
a first compensation unit configured to compensate the second image for global motion;
a second compensation unit configured to compensate the second image for local motion;
an image synthesizing unit configured to;
receive images output from the first compensation unit or the second compensation unit; and
synthesize the received images;
a single image selection unit configured to select at least one of the first image, the second image, and an auto-exposure image; and
a control unit configured to, based on the calculated motion degree, allow the first and second images to be provided to the image synthesizing unit via at least one of the first compensation unit and the second compensation unit or to the single image selection unit.
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Abstract
Disclosed is an apparatus and method for obtaining a motion adaptive high dynamic range image, in which a motion degree of a first image and a second taken using different exposure times is calculated. The motion calculation intensity is adjusted based on the calculated motion degree. The motion compensation intensity involves a global motion compensation and/or a location motion compensation. Images subjected to compensation are synthesized and output, so that an image having high dynamic range is obtained.
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Citations
15 Claims
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1. An apparatus for obtaining a motion adaptive high dynamic range image, the apparatus comprising:
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a motion calculation unit configured to; receive a first image and a second image that are taken using different exposure times; and calculate a motion degree of the second image by comparing the first image with the second image; a first compensation unit configured to compensate the second image for global motion; a second compensation unit configured to compensate the second image for local motion; an image synthesizing unit configured to; receive images output from the first compensation unit or the second compensation unit; and synthesize the received images; a single image selection unit configured to select at least one of the first image, the second image, and an auto-exposure image; and a control unit configured to, based on the calculated motion degree, allow the first and second images to be provided to the image synthesizing unit via at least one of the first compensation unit and the second compensation unit or to the single image selection unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 11, 12)
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8. An apparatus for obtaining a motion adaptive high dynamic range image, the apparatus comprising:
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a first compensation unit configured to; receive a first image and a second image; and compensate the second image for global motion based on the first image; a motion calculation unit configured to calculate a motion degree of the second image compensated for global motion by comparing the first image with the second image compensated for global motion; is a second compensation unit configured to compensate for local motion of the second image compensated for global motion; an image synthesizing unit configured to; receive images output from the first compensation unit or the second compensation unit; and synthesize the received images; a single image selection unit configured to select at least one of the first image, the second image, and an auto-exposure image; and a control unit configured to, based on the calculated motion degree; allow the first image and the second image compensated global motion to be delivered to the image synthesizing unit; allow the first image and the second image compensated for global motion compensation to be delivered to the image synthesizing unit via the second compensation unit;
orallow the first image and the second image to be delivered to the single image selection unit. - View Dependent Claims (14, 15)
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10. An apparatus for obtaining a motion adaptive high dynamic range image, the apparatus comprising:
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an image analysis unit configured to calculate a motion degree between at least two images taken using different exposure times; a compensation processing unit configured to perform global motion compensation and/or local motion compensation based on the calculated motion degree; and an image synthesizing unit configured to synthesize images output from the compensation processing unit.
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13. A method of obtaining a motion adaptive high dynamic range image, the method comprising:
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receiving a first image and a second image that are taken using different exposure times; is calculating a motion degree of the second image based on the first image; performing global motion compensation and/or local motion compensation on the second image based on the calculated motion degree; and synthesizing the first image with the second image which has been subject to the motion compensation.
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Specification