Controller for adjusting industrial camera lens and control method

Abstract

The invention relates to a controller for adjusting an industrial camera lens and a control method. One end of the controller is connected with a CCD image sensor and used for receiving images, and the other end of the controller is connected with an adapter ring and used for controlling a lens. The controller comprises a memory, a mainboard flash memory, a USB interface, an image access module, an image preprocessing analysis module and a lens adapter ring control module. According to the control method, collected video signals are transmitted to the controller through the CCD image sensor, images are processed in real time, the image definition is evaluated, whether the object imaging is clear or not is judged, whether focusing is accurate or not is judged, the proper focusing step length and direction are determined, a control command is sent to an adapter ring, the adapter ring adjusts the focal length of a lens, and automatic focusing is completed. According to the passive focusing method, automatic focusing is carried out based on the clarity of the target image, automatic focusing of an industrial camera lens is realized, the focusing time is saved, and the shooting accuracy, the image quality and the stability are improved.

Description

technical field [0001] The invention relates to the technical field of industrial cameras, in particular to a controller and a control method for adjusting an industrial camera lens. Background technique [0002] Industrial cameras are also commonly known as video cameras. Compared with traditional civilian cameras, they have high image stability, high transmission capacity and high anti-interference ability. Most industrial cameras on the market are based on CCD (Charge Coupled Device) or CMOS (Complementary Metal Oxide Semiconductor) chip camera. [0003] CCD is currently the most commonly used image sensor for machine vision. It integrates photoelectric conversion, charge storage, charge transfer, and signal reading. It is a typical solid-state imaging device. The outstanding feature of CCD is that charge is used as signal, and it is different from other devices that use current or voltage as signal. This type of imaging device forms a charge packet through photoelectri...

AI Technical Summary

Problems solved by technology

[0005] During the working process of the camera, it is necessary to manually adjust the focal length of the lens through the program control adapter ring. The adjustment accuracy is limited, and it is time-consuming. It depends on human judgment and is easily affected by human factors. The accuracy is not high and the stability is poor, so it cannot be realized. Unattended

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