Method of and apparatus for rectifying a stereoscopic image
First Claim
1. A method of rectifying a stereoscopic image comprising first and second images captured using a respective one of first and second image capture devices, the first and second image capture devices forming a stereoscopic image capture device, the method comprising the step of:
- determining first and second rectification transformations for rectifying a respective one of the first and second images so as to reduce vertical disparity;
characterised in that the method comprises using statistics of the parameters of the stereoscopic image capture device in the determination of the first and/or second rectification transformations.
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Abstract
A method of rectifying a stereoscopic image consisting of left and right captured images comprises determining left and right rectification transformations. According to one aspect of the invention, statistics of the parameters of the stereoscopic image capture device used to capture the left and right images are used in the determination of the left and/or right rectification transformation.
According to another aspect of the invention, the left and right rectification transformations are constrained to correspond to a transformation to a virtual alignment to a parallel camera set-up.
Once the left and right rectification transformations have been determined they are preferably used to rectify the left and right images to eliminate, or substantially eliminate, vertical disparity from the rectified image pair. The left and right rectified images may then be displayed on a stereoscopic display device for viewing by an observer, or they may alternatively be stored for later use.
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Citations
42 Claims
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1. A method of rectifying a stereoscopic image comprising first and second images captured using a respective one of first and second image capture devices, the first and second image capture devices forming a stereoscopic image capture device, the method comprising the step of:
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determining first and second rectification transformations for rectifying a respective one of the first and second images so as to reduce vertical disparity;
characterised in that the method comprises using statistics of the parameters of the stereoscopic image capture device in the determination of the first and/or second rectification transformations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 32)
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22. A method of rectifying a stereoscopic image comprising first and second images captured using first and second image capture devices, the first and second image capture devices forming a stereoscopic image capture device, the method comprising the step of;
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determining first and second rectification transformations for rectifying a respective one of the first and second images so as to reduce vertical disparity;
characterised in that the method comprises determining the first and second rectification transformation so that the first and second rectification transformations correspond to a virtual alignment to a parallel camera set-up. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 33, 34)
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35. An apparatus for rectifying a stereoscopic image comprising first and second images captured using a respective one of first and second image capture devices, the first and second image capture devices forming a stereoscopic image capture device, the apparatus comprising:
means for determining first and second rectification transformations for rectifying a respective one of the first and second images so as to reduce vertical disparity using statistics of the parameters of the stereoscopic image capture device in the determination of the first and/or second rectification transformations. - View Dependent Claims (36, 37, 38)
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39. An apparatus for rectifying a stereoscopic image comprising first and second images captured using first and second image capture devices, the first and second image capture devices forming a stereoscopic image capture device, the apparatus comprising:
means for determining first and second rectification transformations for rectifying a respective one of the first and second images so as to reduce vertical disparity, the first and second rectification transformations corresponding to a virtual alignment to a parallel camera set-up. - View Dependent Claims (40, 41, 42)
Specification