CCD camera clear imaging automatic focusing device and method

Abstract

The invention discloses a CCD camera clear imaging focusing device. The device comprises a CCD camera, a structured light projector, a clamping mechanism, three external meshing spur gears, three opening and closing external meshing spur gears, three stepping motors and a box body. An automatic focusing method is characterized by firstly, driving a focusing ring motor and an exposure motor to carry out picture distance and exposure adjustment; driving a focusing ring to rotate at a fixed step length through a motor, and enabling a CCD camera focusing ring photographing switch to acquire a series of fuzzy-clear-fuzzy image sequences at the same time so as to provide a pixel selection threshold improved Brenner algorithm to be matched with a central region-of-interest extraction method and amotor search strategy; and completing automatic focusing of the CCD camera under condition that manual focusing cannot be achieved. By means of the device and the method, automatic parameter adjustment and clear imaging of the CCD camera are achieved, and an automatic and intelligent development process in the related fields of camera image detection is promoted.

Description

Technical field[0001]The invention relates to the technical field of camera auto-focusing, in particular to a CCD camera clear imaging auto-focusing device and method.Background technique[0002]At present, in terms of three-dimensional measurement, manual focusing CCD cameras are currently used. By manually adjusting the relevant CCD camera parameters, the user manually adjusts the lens position, and determines the camera's focus position by observing the camera's imaging clarity. However, the manual focusing method is the subjective result of the naked eye observation by the technicians, and this focusing method that relies on human subjective factors is prone to visual fatigue after long-term use of the eyes, which makes the focusing speed and accuracy low and heavily dependent Subjective factors for users.[0003]The existing manual focus solution is to manually focus before shooting until the camera's image is clear and then take the image. For a CCD camera mounted on a moving plat...

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to provide a device and method that can liberate both hands and eyeballs, and is suitable for scenes where CCD cameras cannot manually focus, improve focusing speed and accuracy, and solve the problem that the parameters of existing manual focus CCD cameras cannot be dynamically adjusted. Focusing accuracy and slow speed caused by subjective judgment, transforming the manually adjusted CCD camera into an automatically adjusted CCD camera, promoting the automation and intelligence of CCD camera auto focus

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