IMAGE STABILIZER, SYSTEM HAVING THE SAME AND METHOD OF STABILIZING AN IMAGE
First Claim
1. An image stabilizer comprising:
- a motion estimation unit configured to extract motion vectors from a plurality of windows, the plurality of windows being projected from a plurality of divided areas of a picture;
a motion vector selection unit configured to select a motion vector from among the plurality of motion vectors;
a motion compensation vector calculation unit configured to calculate a motion compensation vector using the selected motion vector; and
an image compensation unit configured to compensate an image of the picture using the calculated motion compensation vector.
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Accused Products
Abstract
An image stabilizer includes a motion estimation unit, a motion vector selection unit, a motion compensation vector calculation unit and an image compensation unit. A plurality of divided areas of a picture is projected onto a plurality of windows. The motion estimation unit extracts motion vectors from the plurality of windows. The motion vector selection unit selects an optimal motion vector among the plurality of motion vectors. The motion compensation vector calculation unit calculates a motion compensation vector using the optimal motion vector. The image compensation unit compensates an image of the picture using the motion compensation vector. Accordingly a sudden shift effect may be reduced when stabilizing the image.
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Citations
19 Claims
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1. An image stabilizer comprising:
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a motion estimation unit configured to extract motion vectors from a plurality of windows, the plurality of windows being projected from a plurality of divided areas of a picture;
a motion vector selection unit configured to select a motion vector from among the plurality of motion vectors;
a motion compensation vector calculation unit configured to calculate a motion compensation vector using the selected motion vector; and
an image compensation unit configured to compensate an image of the picture using the calculated motion compensation vector. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An image system comprising:
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an optical sensing device configured to receive an optical scene and output an image signal, the image signal being an electrical signal corresponding to the optical scene;
a digital signal processor unit (DSP) configured to receive an digitally process the image signal; and
a motion estimation/compensation unit configured to divide a picture of the scene into a plurality of areas using the digitally processed image signal, configured to estimate respective motion vectors of the plurality of divided areas, configured to select a motion vector from among the motion vectors, configured to calculate a motion compensation vector using the selected motion vector, and configured to compensate the image signal using the calculated motion compensation vector. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of stabilizing an image comprising:
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dividing a picture into a plurality of areas;
forming a plurality of windows projected from the plurality of areas;
extracting a plurality of motion vectors from the plurality of windows;
selecting a motion vector among the extracted plurality of motion vectors;
calculating a motion compensation vector using the selected motion vector; and
compensating an image of the picture using the calculated motion compensation vector. - View Dependent Claims (18, 19)
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Specification