METHOD FOR ANALYZING OBJECT MOTION IN MULTI FRAMES
First Claim
1. A method for analyzing object motion in multi frames adapted to an image capturing device, comprising:
- obtaining a plurality set of first sum of absolute difference according to a noise of the image capturing device under a plurality of light settings, wherein each of the light settings respectively corresponds to a set of first sum of absolute difference;
capturing a first frame and a second frame via the image capturing device under a picturing light setting of the light settings;
calculating a plurality of second sum of absolute difference between the first frame and the second frame;
finding a plurality of object block within a vein tracking of the object in the first frame and the second frame;
calculating a local motion vector of each object block respectively according to the second sum of absolute difference;
calculating a first reliability of each object block respectively according to the second sum of absolute difference and the set of first sum of absolute difference corresponding to the picturing light setting; and
estimating the local motion vectors according to the first reliability to obtain a global motion vector.
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Abstract
A method for analyzing object motion in multi frames adapted to an image capturing device is provided. Firstly, a plurality set of first sum of absolute difference (SAD) are obtained according to noise of the image capturing device under a plurality of light settings. Next, two frames are captured under a picturing light setting of the light settings. Then, a plurality of second SAD between the two frames are calculated. Afterwards, a plurality of object block within vein tracking of the object are found. Next, a local motion vector of each object block is respectively calculated according to the second SAD. Then, a first reliability of each object block is respectively calculated according to the second SAD and the set of the first SAD corresponding to the picturing light setting. Afterwards, the local motion vectors are estimated according to the first reliability to obtain a global motion vector.
52 Citations
9 Claims
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1. A method for analyzing object motion in multi frames adapted to an image capturing device, comprising:
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obtaining a plurality set of first sum of absolute difference according to a noise of the image capturing device under a plurality of light settings, wherein each of the light settings respectively corresponds to a set of first sum of absolute difference; capturing a first frame and a second frame via the image capturing device under a picturing light setting of the light settings; calculating a plurality of second sum of absolute difference between the first frame and the second frame; finding a plurality of object block within a vein tracking of the object in the first frame and the second frame; calculating a local motion vector of each object block respectively according to the second sum of absolute difference; calculating a first reliability of each object block respectively according to the second sum of absolute difference and the set of first sum of absolute difference corresponding to the picturing light setting; and estimating the local motion vectors according to the first reliability to obtain a global motion vector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification