System and method for optical coupling image acquisition time calibration

Abstract

The invention provides a system and method for optical coupling image acquisition time calibration. The system for optical coupling image acquisition time calibration comprises a system time master control module, a logic control module, a time light generating module, a trigger module, a camera, an image sensor and an image processing module; wherein the system time master control module providesa reference time for the logic control module and the trigger module; the logic control module generates an electrical parameter control signal and a periodic control signal based on the reference time; the time light generating module comprises a light source matrix sub-module and an electrical parameter sub-module; the trigger module generates a trigger signal based on the reference time; the camera forms an optical path, and generates an acquisition control signal after the camera is triggered by the trigger signal; the image sensor is triggered by the acquisition control signal to receivethe optical matrix information and the reflected light of a measured object, so as to obtain a first image; and the image processing module converts the optical matrix information to the image acquisition time information to obtain a second image, wherein the second image is the first image marked the time information. By means of the system and method for optical coupling image acquisition timecalibration, the time that the camera shoots the image can be accurately located in extreme environments.

Description

technical field [0001] The invention belongs to the technical field of image acquisition, and in particular relates to a system and method for calibrating an optical coupling type image acquisition time. Background technique [0002] The camera is a commonly used image acquisition device in the fields of industrial production and scientific research. It is often used to photograph the dynamic process of objects, and obtain some qualitative or quantitative measurement results by analyzing the collected images. In photomechanical experiments, image processing algorithms are often used to quantitatively analyze images collected by industrial cameras to obtain mechanical quantities such as stress, strain, and displacement of the measured object. [0003] In many applications, two or more cameras need to work together to achieve dynamic measurement of objects in three-dimensional space or stitching measurement of a large field of view. In these applications, in order to obtain a...

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Problems solved by technology

[0011] The acquisition of images, especially the image acquisition of photomechanics, often involves the detection environment of high temperature, high wind speed, and high humidity. The light source cannot be installed on the object to be tested, or even if the light source is installed on the object to be tested, it will Not functioning properly due to the influence of the surrounding environment

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