CALIBRATION METHOD OF PROJECTION EFFECT
First Claim
1. A calibration method of projection effect for an optical navigation system provided with a light emitting module and a sensor, wherein the light emitted by the light emitting module is reflected to the sensor by an object plane, the calibration method of projection effect comprising:
- (a) making the optical navigation system move along a predetermined trace relative to the object plane;
(b) sensing the predetermined trace by the sensor to obtain a projection trace;
(c) calculating a projection effect value according to the included angle between a reflected light and the object plane; and
(d) calibrating the projection trace with the projection effect value, to obtain a calibration trace in proportion to the predetermined trace.
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Accused Products
Abstract
The present invention provides a calibration method of projection effect. The calibration method of projection effect according to the invention comprises the following steps. The first, step (a) is performed to make an optical navigation system move along a predetermined trace relative to an object plane. Then, step (b) is performed to sense the predetermined trace by a sensor to obtain a projection trace. The next, step (c) is performed to calculate a projection effect value according to the included angle between a reflected light and the object plane. Finally, step (d) is performed to calibrate the projection trace with the projection effect value to obtain a calibration trace which is in proportion to the predetermined trace.
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Citations
16 Claims
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1. A calibration method of projection effect for an optical navigation system provided with a light emitting module and a sensor, wherein the light emitted by the light emitting module is reflected to the sensor by an object plane, the calibration method of projection effect comprising:
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(a) making the optical navigation system move along a predetermined trace relative to the object plane; (b) sensing the predetermined trace by the sensor to obtain a projection trace; (c) calculating a projection effect value according to the included angle between a reflected light and the object plane; and (d) calibrating the projection trace with the projection effect value, to obtain a calibration trace in proportion to the predetermined trace. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A calibration method of projection effect for an optical navigation system is provided with a light emitting module and a sensor, wherein the light emitted by the light emitting module is reflected to the sensor by an object plane, the calibration method of projection effect comprising:
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(a) making an optical navigation system move along a predetermined trace relative to the object plane; (b) sensing the predetermined trace by the sensor to obtain a projection trace; (c) calculating a projection effect value according to the projection trace; and (d) calibrating the projection trace according to the predetermined trace and the projection effect value to obtain a calibration trace in proportion to the predetermined trace. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification