Optical touch display, a calibration apparatus and a calibration method thereof
First Claim
1. A calibration method for calibrating an optical touch display, wherein the optical touch display comprises a plurality of image detecting sensors, the calibration method comprising the following steps:
- generating a plurality of calibration points;
generating a plurality of representative calibration points from the plurality of calibration points;
obtaining a first image position of each representative calibration point relative to the plurality of image detecting sensors via the plurality of image detecting sensors;
constructing a coordinate transformation mechanism for transforming the first image position of each representative calibration point relative to the plurality of image detecting sensors to a first screen position of each representative calibration point relative to the optical touch display;
calculating a relative position between each representative calibration point and its neighboring calibration points;
calculating a second image position of each calibration point relative to the plurality of the image detecting sensors based on the relative position and the first image position; and
calculating a second screen position of each calibration point relative to the optical touch display via the coordinate transformation mechanism and the second image position.
1 Assignment
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Accused Products
Abstract
An optical touch display, a calibration apparatus, and a calibration method thereof are disclosed. The calibration method is used for calibrating the optical touch display, and the optical touch display has a plurality of image detecting sensors. The calibration method includes the following steps: generating a plurality of calibration points; generating a plurality of representative calibration points from the plurality of calibration points; obtaining a first image position of each representative calibration point via the plurality of image detecting sensors; constructing a coordinate transformation mechanism for transforming the first image position into a first screen position; calculating a relative position between the representative calibration points and its neighboring calibration points; calculating a second image position of each calibration point based on the relative position; and calculating a second screen position by using the transformation mechanism and the second image position.
16 Citations
10 Claims
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1. A calibration method for calibrating an optical touch display, wherein the optical touch display comprises a plurality of image detecting sensors, the calibration method comprising the following steps:
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generating a plurality of calibration points; generating a plurality of representative calibration points from the plurality of calibration points; obtaining a first image position of each representative calibration point relative to the plurality of image detecting sensors via the plurality of image detecting sensors; constructing a coordinate transformation mechanism for transforming the first image position of each representative calibration point relative to the plurality of image detecting sensors to a first screen position of each representative calibration point relative to the optical touch display; calculating a relative position between each representative calibration point and its neighboring calibration points; calculating a second image position of each calibration point relative to the plurality of the image detecting sensors based on the relative position and the first image position; and calculating a second screen position of each calibration point relative to the optical touch display via the coordinate transformation mechanism and the second image position. - View Dependent Claims (2, 3, 4)
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5. A calibration apparatus for calibrating an optical touch display, wherein the optical touch display comprises a plurality of image detecting sensors, the calibration apparatus comprising:
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a processor electrically connected to the plurality of image detecting sensors; a memory electrically connected to the processor, a plurality of instructions stored in the memory, and the processor reading the plurality of instructions to perform the following mechanism; generating a plurality of calibration points via a calibration point generating module; generating a plurality of representative calibration points from the plurality of calibration points via a representative calibration point generating module; obtaining a first image position of each representative calibration point relative to the plurality of image detecting sensors via the plurality of image detecting sensors; transforming the first image position of each representative calibration point relative to the plurality of image detecting sensors to a first screen position of each representative calibration point relative to the optical touch display via a coordinate transformation mechanism; calculating a relative position between each representative calibration point and its neighboring calibration points via a relative position generating module; calculating a second image position of each calibration point relative to the plurality of image detecting sensors via an image position calculating module based on the relative position and the first image position; and calculating a second screen position of each calibration point relative to the optical touch display via the coordinate transformation mechanism and based on the second image position. - View Dependent Claims (6, 7)
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8. An optical touch display comprising:
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a plurality of image detecting sensors; a processor electrically connected to the plurality of image detecting sensors; a memory electrically connected to the processor, a plurality of instructions stored in the memory, and the processor reading the plurality of instructions to perform the following mechanism; generating a plurality of calibration points via a calibration point generating module; generating a plurality of representative calibration points from the plurality of calibration points via a representative calibration point generating module; obtaining a first image position of each representative calibration point relative to the plurality of image detecting sensors via the plurality of image detecting sensors; transforming the first image position of each representative calibration point relative to the plurality of image detecting sensors to a first screen position of each representative calibration point relative to the optical touch display via a coordinate transformation mechanism; calculating a relative position between each representative calibration point and its neighboring calibration points via a relative position generating module; calculating a second image position of each calibration point relative to the plurality of image detecting sensors via an image position calculating module based on the relative position and the first image position; and calculating a second screen position of each calibration point relative to the optical touch display via the coordinate transformation mechanism and based on the second image position. - View Dependent Claims (9, 10)
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Specification