Electronic jitter absorbing method based on common precision gyro

Abstract

The invention discloses an electronic jitter absorbing method based on a common precision gyro, which is mainly used in a sensor electronic jitter absorbing system. In the method, the common precision gyro is used to calculate the jitter offset of a camera system and estimate the quadrant ( direction) of the jitter, local motion estimation is performed by taking the center of the quadrant as the initial searching position of a block matching algorithm, and after 'abnormal points' in a local motion vector are eliminated according to the jitter direction information, a global motion vector is estimated quickly and the image is compensated to achieve a jitter absorbing effect. The method is based on a simple principle and easy to implement, can improve operation speed and estimation precision, has low requirement on the precision of gyro, and can greatly reduce hardware cost, use a micro mechanical gyro with a very small volume, avoid making system more complex and avoid complex offset calibration and compensation drift calculation.

Description

technical field [0001] The patent of the present invention relates to an electronic anti-vibration method based on a common precision gyroscope, especially an electronic anti-vibration method combining a common precision gyroscope with digital processing, which is mainly used in a sensor electronic anti-vibration system. Background technique [0002] The traditional sensor electronic anti-vibration system uses high-precision gyroscopes for first-level anti-vibration, and uses digital processing methods for second-level anti-vibration. This method requires a mechanical device to compensate the jitter, which is relatively large in size and weight, and requires high precision of the gyroscope. The current electronic vibration reduction method that combines sensors with digital technology first uses high-precision gyroscopes to detect motion offsets, and then uses digital methods to perform motion compensation. This method uses a digital method instead of a mechanical device to...

AI Technical Summary

Problems solved by technology

[0003] Compared with ordinary precision gyroscopes, the price of high-precision gyroscopes is dozens or even hundreds of times higher, which is usually the main system cost burden

At the same time, due to the gyro's own static offset and zero drift and temperature drift, it requires complex correction offset calculations for normal use, and complex real-time compensation is required during use.

Especially for the new micromechanical (MEMS) gyroscope, its small size and low cost, but its accuracy is limited, so it cannot be applied in the electronic shake reduction system