Automatic focusing method based on electro-hydraulic lens with adjustable focus

The present invention relates to an automatic focusing method based on an electro-hydraulic lens with adjustable focus. Image definition information is employed to generate a High-Jump function to guide automatic focusing; an optimal High-Jump step length is selected according to difference between the definition of a current frame and the maximum value of a definition evaluation curve, and the step length is employed to complete High-Jump focus adjustment; and the focus length after High-Jump focus adjustment is very close to the optical focus length to greatly reduce the number of times of focus adjustment in a follow-up single hill-climbing method optimization process. The automatic focusing method is faster in focusing speed and better in focusing effect for a movement object, can fully develop the hardware advantage of the electro-hydraulic lens with adjustable focus and can achieve accurate focusing of the movement object through High-Jump continuous jump. 本发明涉及种基于电液可调焦镜头的自动对焦方法，利用图像的清晰度信息生成High-Jump函数，