Apparatus for digital image stabilization using object tracking and method thereof
First Claim
1. An apparatus for digital image stabilization comprising:
- an image signal processing unit operative to output a first digital image obtained under a first exposure value condition and a plurality of second digital images obtained under a second exposure value condition;
a compensating unit operative to;
compensate for motion in a plurality of comparative second digital images relative to a reference second digital image by tracking an object in an object tracking image where the object tracking image is either a binary image or a reverse binary image, whichever has more objects, of a respective comparative second digital image, andgenerate a shaky hand compensated image by overlapping the motion-compensated images with the reference image; and
an image property correcting unit operative to correct a property of the shaky hand compensated image based on a property of the first digital image, wherein the compensating unit includes;
an object labeling unit operative to;
track an object in an image among binary images and reverse binary images of the reference image and each comparative image, and label the object;
a motion value computing unit operative to;
match an object parameter of each comparative image with an object of the reference image, calculate an object parameter of each comparative image, and compute a motion value for each comparative image using the calculated object parameter;
a motion compensating unit operative to apply each computed motion value to a corresponding comparative image to compensate for motion of each comparative image; and
a compensated image generating unit operative to overlap each motion-compensated comparative image with the reference image to generate a shaky hand compensated image.
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Abstract
Apparatus for digital image stabilization using object tracking includes an image signal processing unit that outputs a first digital image obtained under a first exposure value condition and a plurality of second digital images obtained under a second exposure value condition. The apparatus also includes a shaky hand compensating unit that compensates for motion in comparative second digital images relative to a reference second digital image by tracking an object in either a binary image or a reverse binary image of a respective second digital image that has the most objects (i.e., in the binary or reverse image). The compensating unit then generates a shaky hand compensated image by overlapping the motion-compensated images with the reference image. The apparatus further includes an image property correcting unit that corrects a property of the shaky hand compensated image based on a property of the first digital image.
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Citations
20 Claims
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1. An apparatus for digital image stabilization comprising:
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an image signal processing unit operative to output a first digital image obtained under a first exposure value condition and a plurality of second digital images obtained under a second exposure value condition; a compensating unit operative to; compensate for motion in a plurality of comparative second digital images relative to a reference second digital image by tracking an object in an object tracking image where the object tracking image is either a binary image or a reverse binary image, whichever has more objects, of a respective comparative second digital image, and generate a shaky hand compensated image by overlapping the motion-compensated images with the reference image; and an image property correcting unit operative to correct a property of the shaky hand compensated image based on a property of the first digital image, wherein the compensating unit includes; an object labeling unit operative to; track an object in an image among binary images and reverse binary images of the reference image and each comparative image, and label the object;
a motion value computing unit operative to;match an object parameter of each comparative image with an object of the reference image, calculate an object parameter of each comparative image, and compute a motion value for each comparative image using the calculated object parameter;
a motion compensating unit operative to apply each computed motion value to a corresponding comparative image to compensate for motion of each comparative image; and
a compensated image generating unit operative to overlap each motion-compensated comparative image with the reference image to generate a shaky hand compensated image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for digital image stabilization comprising:
receiving a first digital image obtained under a first exposure value condition and a plurality of second digital images obtained under a second exposure value condition; selecting an object tracking image where the object tracking image is an image having the most objects among a binary image and a reverse binary image of one of the plurality of second digital images, the plurality of second digital images including a reference image and at least one comparative image;
tracking an object in the object tracking image;
labeling the object;
matching an object of each comparative image with an object of the reference image;
calculating an object parameter of each comparative image;
computing a motion value for each comparative image using the calculated object parameter;
compensating for motion of each comparative image by applying each computed motion value to a corresponding comparative image;
generating a shaky hand compensated image by overlapping each motion-compensated comparative image with the reference image; and
correcting a property of the shaky hand compensated image based on a property of the first digital image.- View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
Specification