Method of system for image stabilization through image processing, and zoom camera including image stabilization function
AssigneeSamsung Techwin Co., Ltd.
InventorJe-Youl CHON
Life of this patent
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Abstract
A method and system for image stabilization through image processing, and a zoom camera including an image stabilization function. The method includes: determining whether an input image comprises a representative feature portion; sampling the representative feature portion to generate a sampled image if it is determined that the input image comprises the representative feature portion; enlarging the sampled image, matching the enlarged sampled image with the sampled image, and obtaining a central coordinate of the matched image; and aligning an optical axis by calculating a difference between the central coordinate of the matched image and a central coordinate of the sampled image.
Claims21
A method of image stabilization, the method comprising:
- determining whether an input image comprises a representative feature portion;
- sampling the representative feature portion to generate a sampled image if it is determined that the input image comprises the representative feature portion;
- enlarging the sampled image, matching the enlarged sampled image with the sampled image, and obtaining a central coordinate of the matched image;
- and
- aligning an optical axis by calculating a difference between the central coordinate of the matched image and a central coordinate of the sampled image.
A method of image stabilization, the method comprising:
- determining whether an input image comprises a representative feature portion;
- calculating optical flows of the input image during enlargement of the input image, if it is determined that the input image does not comprise the representative feature portion;
- obtaining optical axis error information by using optical flow information obtained from the calculated optical flows;
- and
- aligning an optical axis by using the obtained optical axis error information.
An image stabilization system comprising:
- a representative feature portion presence determining unit which determines whether an input image comprises a representative feature portion;
- a sampling unit which samples the representative feature portion to generate a sample image if it is determined that the input image comprises the representative feature portion;
- a matching unit which enlarges the sampled image, matches the enlarged sampled image with the sampled image, and obtains a central coordinate of the matched image;
- and
- an optical axis aligning unit which aligns an optical axis by calculating a difference between the central coordinate of the matched image and a central coordinate of the sampled image.
An image stabilization system comprising:
- a representative feature portion presence determining unit which determines whether an input image comprises a representative feature portion;
- an optical flow calculating unit which calculates optical flows of the input image during enlargement of the input image, if it is determined that the input image does not comprise the representative feature portion;
- an error information extracting unit which obtains optical axis error information by using optical flow information obtained from the calculated optical flows;
- and
- an optical axis aligning unit which aligns an optical axis by using the obtained optical axis error information.
A zoom camera comprising:
- a representative feature portion presence determining unit which determines whether an input image comprises a representative feature portion;
- an optical axis error calculating unit which obtains optical axis error information by matching a sample image including the representative feature portion and an enlarged sample image if the representative feature portion presence determining unit determines that the input image comprises a representative feature portion, and obtaining the optical axis error information by calculating optical flow information between at least two images corresponding to the input image if the representative feature portion presence determining unit determines that the input image does not comprise the representative feature portion;
- and
- an optical axis aligning unit which compensates for an optical axis error by using the obtained optical axis error information.
Dependencies are inferred from the claim text.