Input method of pointer input system
First Claim
1. An input method of a pointer input system, said pointer input system comprising a data processing system, an image projecting system, a projection screen and a photosensing system, said input method comprising steps of:
- performing a setting procedure and a correcting procedure on said pointer input system to obtain a space conversion relationship and an over-bright position;
inputting at least a light spot onto said projection screen;
arranging at least a dual-band filter or a multi-band filter between said photosensing system and said projecting screen to filter off monochromic or poly chromic light captured by the photosensing system;
capturing said light spot by said photosensing system, thereby obtaining a light-spot image;
recognizing at least a relevant light spot of said light-spot image comprising the steps of;
excluding said over-bright position from the light-spot image, andchecking whether said light-spot image complies with a light-spot characteristic situation, thereby obtaining at least a light-spot data; and
converting said at least a light-spot data into at least an input data of said data processing system according to said space conversion relationship.
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Abstract
The present invention relates to an input method of a pointer input system. A setting procedure and a correcting procedure having been performed on the pointer input system to obtain a space conversion relationship and an over-bright position. The input method includes steps of inputting at least a light spot into a projection screen, capturing the light spot by a photosensing system to obtain a light-spot image, recognizing at least a relevant light spot of the light-spot image by checking whether the light-spot image excluding the over-bright position complies with a light-spot characteristic situation so as to obtain at least a light-spot data, and converting the at least a light-spot data into at least an input data of a data processing system according to the space conversion relationship.
28 Citations
24 Claims
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1. An input method of a pointer input system, said pointer input system comprising a data processing system, an image projecting system, a projection screen and a photosensing system, said input method comprising steps of:
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performing a setting procedure and a correcting procedure on said pointer input system to obtain a space conversion relationship and an over-bright position; inputting at least a light spot onto said projection screen; arranging at least a dual-band filter or a multi-band filter between said photosensing system and said projecting screen to filter off monochromic or poly chromic light captured by the photosensing system; capturing said light spot by said photosensing system, thereby obtaining a light-spot image; recognizing at least a relevant light spot of said light-spot image comprising the steps of; excluding said over-bright position from the light-spot image, and checking whether said light-spot image complies with a light-spot characteristic situation, thereby obtaining at least a light-spot data; and converting said at least a light-spot data into at least an input data of said data processing system according to said space conversion relationship. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification