Image stabilizing method and compound image stabilizing system based on mechanical image stabilizing and electronic image stabilizing

Abstract

The invention discloses an image stabilizing method and a compound image stabilizing system based on mechanical image stabilizing and electronic image stabilizing. A mechanical image stabilizing system based on an MPU6050 motion sensor and a stepping motor is employed to control the deflection angle of a camera within five DEG; and then, an electronic image stabilizing method based on block gray-level projection is employed to perform global motion estimation through a median filtering method, so as to remove interframe small amplitude high frequency jitter, thereby realizing accurate image stabilizing. The system comprises an MPU6050 sensor module, an MSP430 master control module, a motor control module and an electronic image stabilizing module. The compound image stabilizing system can adapt to camera wide-angle deflection and complex environments and meet the requirements of a motion platform imaging system.

Description

technical field [0001] The invention relates to an image stabilization method and an image stabilization system based on mechanical image stabilization and electronic image stabilization. Background technique [0002] A stable image sequence is not only convenient for manual observation and recognition, but also a necessary prerequisite for follow-up processing such as tracking and compression encoding. Due to many interference factors in the working environment of the camera platform, such as the camera shake caused by the movement of the mobile platform itself or external interference, the obtained video sequences often have different degrees of shaking and blurring, so it is often necessary to stabilize the video through video image stabilization technology. sequence is processed. [0003] Current video image stabilization technologies mainly include mechanical image stabilization, optical image stabilization and electronic image stabilization. Mechanical image stabiliz...

AI Technical Summary

Problems solved by technology

However, electronic image stabilization uses digital image processing technology to determine the inter-frame offset of the image sequence and perform reverse compensation to generate a stable image sequence. Compared with mechanical image stabilization and optical image stabilization, it has the advantages of low cost and strong flexibility, but it is also There is a limit that the degree of image shift between frames cannot be too large

[0004] The working environment of the imaging system based on the mobile platform is complicated, and it often needs to stabilize the field of view at a large deflection angle. It is difficult to meet the demand with electronic image stabilization technology alone. If the high-precision mechanical image stabilization technology is used, the cost is too high. Therefore, a new method is proposed. A composite image stabilization system, which uses MEMS sensors and stepping motors to form a mechanical image stabilization system to achieve preliminary stabilization of the camera platform, and then uses electronic image stabilization technology to obtain high-quality stable image sequences

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