METHOD AND SYSTEM FOR GENERATING CALIBRATION INFORMATION FOR AN OPTICAL IMAGING TOUCH DISPLAY DEVICE
First Claim
1. A method for generating calibration information for an optical imaging touch display device that includes at least one image capturing unit by utilizing the image capturing unit, a processor and a calibration tool, the calibration tool having a surface that is provided with a plurality of mark patterns, each adjacent pair of the mark patterns defining a pattern boundary therebetween, the calibration tool being disposed such that the pattern boundary between each adjacent pair of the mark patterns forms a predefined positional relationship with a corresponding predefined location on the optical imaging touch display device, said method comprising the steps of:
- (A) configuring the image capturing unit to capture an image of the surface of the calibration tool so as to generate an image frame;
(B) configuring the processor to perform edge detection on the image frame so as to determine a position of each of at least one detected pattern edge within the image frame; and
(C) configuring the processor to generate the calibration information with reference to the position of each of said at least one detected pattern edge as determined in step (B) and the corresponding predefined location on the optical imaging touch display device.
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Abstract
A system for generating calibration information for an optical imaging touch display device includes a calibration tool and a processor. The calibration tool is disposed within an image capturing range of an image capturing unit, and has a surface with mark patterns. Each adjacent pair of the mark patterns defines a pattern boundary. The calibration tool is disposed such that the pattern boundary forms a predefined positional relationship with a corresponding predefined location on the optical imaging touch display device. The processor receives an image frame corresponding to an image of the surface of the calibration tool, performs edge detection on the image frame to determine a position of each of at least one detected pattern edge, and generates the calibration information with reference to the position thus determined and the corresponding predefined location.
38 Citations
11 Claims
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1. A method for generating calibration information for an optical imaging touch display device that includes at least one image capturing unit by utilizing the image capturing unit, a processor and a calibration tool, the calibration tool having a surface that is provided with a plurality of mark patterns, each adjacent pair of the mark patterns defining a pattern boundary therebetween, the calibration tool being disposed such that the pattern boundary between each adjacent pair of the mark patterns forms a predefined positional relationship with a corresponding predefined location on the optical imaging touch display device, said method comprising the steps of:
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(A) configuring the image capturing unit to capture an image of the surface of the calibration tool so as to generate an image frame; (B) configuring the processor to perform edge detection on the image frame so as to determine a position of each of at least one detected pattern edge within the image frame; and (C) configuring the processor to generate the calibration information with reference to the position of each of said at least one detected pattern edge as determined in step (B) and the corresponding predefined location on the optical imaging touch display device. - View Dependent Claims (2, 3, 4, 5)
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6. A system for generating calibration information for an optical imaging touch display device, the optical imaging touch display device including a display panel and at least one image capturing unit, the system comprising:
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a calibration tool to be disposed within an image capturing range of the image capturing unit of the optical imaging touch display device, and having a surface that is provided with a plurality of mark patterns, each adjacent pair of said mark patterns defining a pattern boundary therebetween, said calibration tool being disposed such that said pattern boundary between each adjacent pair of said mark patterns forms a predefined positional relationship with a corresponding predefined location on the optical imaging touch display device; and a processor adapted for receiving an image frame from the image capturing unit, the image frame corresponding to an image of said surface of said calibration tool as captured by the image capturing unit; wherein said processor performs edge detection on the image frame so as to determine a position of each of at least one detected pattern edge within the image frame, and generates the calibration information with reference to the position of each of said at least one detected pattern edge thus determined and the corresponding predefined location on the optical imaging touch display device. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification