Abstract: The disclosure discloses a method and device for camera rapid automatic focusing. The method comprises: driving a lens to move to multiple different focus positions to acquire image data of a object, and calculating a corresponding estimated focus value in a first high frequency and a corresponding determined focus value in a second high frequency for each image data; calculating a rate of change between a current determined focus value and a previous determined focus value, and determining a direction of movement of the lens on the basis of the rate of change being either positive or negative; comparing the rate of change with a preset focus change threshold, and determining a speed of movement of the lens on the basis of a comparison result; and repeating said steps until the lens moves to a focus position corresponding to a maximum of the estimated focus values.

Abstract: The disclosure relates to the technical field of focusing, and particularly to a method and device for camera automatic focus control. The method comprises: calculating a corresponding estimated focus value in a first high frequency and a corresponding determined focus values in a second high frequency for each image data, wherein a frequency value of the second high frequency is greater than a frequency value of the first high frequency; acquiring a current estimated focus value and comparing the same with a preset estimated focus value, and determining whether a current focus position corresponding to the current estimated focus value is located on a pseudo peak corresponding to a local pole; and determining a speed of movement for a camera in a next movement.

Abstract: The disclosure discloses a method and device for camera rapid automatic focusing. The method comprises: driving a lens to move to multiple different focus positions to acquire image data of a object, and calculating a corresponding estimated focus value in a first high frequency and a corresponding determined focus value in a second high frequency for each image data; calculating a rate of change between a current determined focus value and a previous determined focus value, and determining a direction of movement of the lens on the basis of the rate of change being either positive or negative; comparing the rate of change with a preset focus change threshold, and determining a speed of movement of the lens on the basis of a comparison result; and repeating said steps until the lens moves to a focus position corresponding to a maximum of the estimated focus values.