Optical guidance moving direction prediction method

A technology of moving direction and optical guidance, which is applied in the field of optical indicators, and can solve problems such as mouse indicator shaking, errors, and movement errors
CN100369053CInactive Publication Date: 2008-02-13EXPLORE MICROELECTRONICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
EXPLORE MICROELECTRONICS
Publication Date
2008-02-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

This invention utilizes the moving vectors of last two correct mean absolute difference (MAD) matrixes to be the base of direction forecast and takes the last correct rector position as the center to forecast and fins out the possible direction of multiple MAD (min) phases and dimensions of vectors in the judgment way of extending layers by layer. Each time before comparing the next frame, a candidate block replaces the reference frame at the center, so that the shift vector varies in a certain sphere.
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Description

technical field

[0001] The present invention relates to a method for predicting the moving direction of optical guidance, in particular to an optical indicator designed by the combination logic of complex programmable logic device (Complex Programmable Logic Device, CPLD) or special-purpose integrated circuit (ASIC), Optical identifiers, robotic arms, etc. are methods for predicting the direction of movement of optical guidance. Background technique

[0002] A general optical mouse uses an image sensing device to capture the image information of the desktop, and converts the analog signal into a digital signal through an analog-to-digital converter (A / D Converter), and then converts the displacement of the mouse through a digital signal processor (DSP). The relative orthogonal pulse signal is output to the computer to control the movement of the cursor on the screen.

[0003] However, in the DSP calculation processing part, the image matching (Image-Matching) of the general...

Claims

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