Image capturing apparatus with movement compensation function and method for movement compensation thereof
First Claim
1. An image capturing apparatus with a movement compensation function, applied in a photographing mode whose exposure time is greater than the safe shutter time for providing the movement compensation function, comprising:
- an image capturing unit, for receiving a release signal to capture a first image under a desired exposure time and a second image with an exposure time smaller than or equal to the safe shutter time;
a motion sensor, for recording a camera motion signal of the image capturing apparatus during the exposure period of the first image; and
a processing unit, for outputting the release signal, and reconstruct the first image to form a reconstructed image according to the camera motion signal, and using an image analyzing algorithm to extract an image of different frequency components from the reconstructed image and the second image, and performing a fusing process to the image of different frequency components according to a specific ratio to generate an output image.
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Abstract
A method for compensating movement of an image capturing apparatus is applied in a photographing mode whose exposure time is greater than the safe shutter time. The method includes the steps of: capturing a long exposure image under the desired exposure time and a short exposure image with an exposure time smaller than or equal to the safe shutter time, and recording a camera motion signal in the exposure time of the long exposure image. The image-shift signal is used to reconstruct the short exposure image and form a reconstructed image, and an image analyzing algorithm is utilized to extract the reconstructed image and the short exposure image of a different frequency component. Finally, different frequency components of the image are fused according to the specific ratios to produce a clear output image.
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Citations
19 Claims
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1. An image capturing apparatus with a movement compensation function, applied in a photographing mode whose exposure time is greater than the safe shutter time for providing the movement compensation function, comprising:
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an image capturing unit, for receiving a release signal to capture a first image under a desired exposure time and a second image with an exposure time smaller than or equal to the safe shutter time; a motion sensor, for recording a camera motion signal of the image capturing apparatus during the exposure period of the first image; and a processing unit, for outputting the release signal, and reconstruct the first image to form a reconstructed image according to the camera motion signal, and using an image analyzing algorithm to extract an image of different frequency components from the reconstructed image and the second image, and performing a fusing process to the image of different frequency components according to a specific ratio to generate an output image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for compensating movement of an image capturing apparatus, applied in a photographing mode having an exposure time greater than the safe shutter time, comprising the steps of:
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capturing a first image under a desired exposure time and a second image with an exposure time smaller than or equal to the safe shutter time; recording a camera motion signal of the image capturing apparatus during the exposure period of the first image; reconstructing the first image to form a reconstructed image according to the camera motion signal; and using an image analyzing algorithm to extract images of different frequency components from the reconstructed image and the second image, and perform a fusing process to the images of different frequency components to generate an output image according to a specific ratio. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification