Convergence measuring apparatus and method thereof
First Claim
1. An apparatus for measuring a convergence based on certain patterns formed on a cathode ray tube, comprising:
- a pattern generator for generating certain patterns comprising a red and blue mixture, and green and blue mixture, respectively, on the cathode ray tube, a first camera for sequentially obtaining the certain patterns formed on the cathode ray tube;
light path dividing means for processing the certain patterns formed on the cathode ray tube into separate left and right stereo images;
a second camera for obtaining the stereo images processed by the light path dividing means;
means for estimating the position and posture of the certain patterns based on the stereo images obtained through the second camera;
a controlling section for measuring the convergence of the image obtained by the first camera while compensating the convergence based on the estimated position and posture of the cathode ray tube.
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Accused Products
Abstract
A convergence measuring apparatus and a measuring method thereof. The apparatus for measuring a convergence includes: a first camera for obtaining the certain pattern formed on the cathode ray tube; a light path dividing section for processing the certain pattern formed on the cathode ray tube into separate left and right stereo images; a second camera for obtaining the stereo images processed by the light path dividing means; an estimating section for estimating the position and posture of the certain pattern based on the stereo images obtained through the second camera; and a controlling section for measuring the convergence of the image obtained by the first camera, while compensating the convergence based on the estimated position and posture of the cathode ray tube. Further, the method for measuring the convergence includes the steps of: forming the certain pattern on the cathode ray tube; calculating the convergence by obtaining the certain pattern formed on the cathode ray tube by the first camera; obtaining the certain pattern formed on the cathode ray tube as a stereo image through the second camera; estimating the position and posture of the cathode ray tube based on the stereo images; and compensating the convergence by including the estimated position and posture of the cathode ray tube in the calculation of the convergence.
20 Citations
5 Claims
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1. An apparatus for measuring a convergence based on certain patterns formed on a cathode ray tube, comprising:
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a pattern generator for generating certain patterns comprising a red and blue mixture, and green and blue mixture, respectively, on the cathode ray tube, a first camera for sequentially obtaining the certain patterns formed on the cathode ray tube;
light path dividing means for processing the certain patterns formed on the cathode ray tube into separate left and right stereo images;
a second camera for obtaining the stereo images processed by the light path dividing means;
means for estimating the position and posture of the certain patterns based on the stereo images obtained through the second camera;
a controlling section for measuring the convergence of the image obtained by the first camera while compensating the convergence based on the estimated position and posture of the cathode ray tube. - View Dependent Claims (2, 3)
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4. A convergence measuring method comprising the steps of:
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generating on a cathode ray tube certain patterns comprising a red and blue color mixture, and a green and blue color mixture, respectively;
calculating the convergence by obtaining the certain patterns formed on the cathode ray tube by a first camera;
obtaining the certain patterns formed on the cathode ray tube as a stereo image through a second camera;
estimating the position and posture of the cathode ray tube based on the stereo image; and
compensating the convergence by including the estimated position and posture of the cathode ray tube in the calculation of the convergence. - View Dependent Claims (5)
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Specification