1, machine vision has multi-dimensional advantages, and China is in the early stage of rapid development

1.1, belongs to the branch of artificial intelligence, compared with the human eye has significant advantages

PC104-DPIO DRL-DPM-BKF Machine vision belongs to the category of artificial intelligence, and has begun to be widely used at home and abroad. Machine vision, known as the “wisdom eye” of intelligent manufacturing, opens a new “vision” for intelligent manufacturing and is a necessary means to achieve industrial automation and intelligence. According to the American Association of Automated Imaging (AIA), Machine Vision is a combination of hardware and software applied in both industrial and non-industrial fields that provides operational guidance for a device to perform its functions based on captured images. The application technology of artificial intelligence mainly includes speech technology, vision technology, natural language processing technology and basic hardware, etc., among which, machine vision technology is the premise of robot autonomous action, which can realize the computer system’s observation, recognition and judgment of the external environment, and is one of the most important frontier branches of artificial intelligence. Machine vision technology PC104-DPIO DRL-DPM-BKF involves many fields such as machinery, electronics, optics, automatic control, computer science, image processing and pattern recognition, accounting for more than 40% of the application technology of artificial intelligence enterprises at home and abroad, and the application range is very wide.

Machine vision has four functions of recognition, measurement, positioning and detection, and the difficulty of technical realization increases in turn. Many functions of machine vision can be basically classified into four categories: recognition, measurement, positioning and detection functions. Recognition refers to the identification of the external shape, color, character, bar code and other features of the target object. Measurement refers to measuring the geometric size PC104-DPIO DRL-DPM-BKF of the target, calibrating the obtained image pixel information into commonly used units of measurement, and then accurately calculating the geometric size of the target in the image. The measurement of high precision and complex shape is the advantage field of machine vision. Positioning is to obtain the two-dimensional or three-dimensional position information of the target object. Detection is to monitor the appearance of the target object, including product integrity detection, appearance defect detection, etc. Speed and accuracy are the main indicators to measure the machine vision recognition, measurement, positioning and detection functions, from the technical implementation difficulty point of view, the difficulty of the four functions is increasing in turn.

PC104-DPIO DRL-DPM-BKF

PC104-DPIO DRL-DPM-BKF The essence of machine vision is to implant “eyes” and “brains” into the machine. Machine vision is mainly divided into imaging and image processing two parts, the light source, lens, camera and image acquisition card equivalent to the eye, the connection cable equivalent to the afferent nerve, the image processing system equivalent to the brain, the control mechanism and the executive mechanism equivalent to the hands and feet and other organs. The workflow of a machine vision device includes visual imaging, automatic image acquisition, image preprocessing, image positioning and segmentation, image recognition and detection, visual servo and optimization control, etc. After the tested object reaches the specified position, it sends trigger pulse to the image acquisition card. After the image acquisition card receives the pulse signal, The trigger signal is transmitted to the camera and the lighting system respectively, and the camera captures the image, converts the optical signal into an ordered electrical signal, and then converts the signal to digital and sends it to the image processing software, and then processes, analyzes and recognizes the image according to the demand, and returns the judgment result or logical control value to the control mechanism for execution,PC104-DPIO DRL-DPM-BKF  completing the specific functional workflow.

Machine vision has many advantages compared with human vision, and many application scenarios have high substitution value. Machine vision is an effective way to achieve precision control, intelligence and automation of equipment, called the machine eye of modern industry and intelligent manufacturing, compared with human vision in accuracy, speed, adaptability, objectivity, repeatability, reliability, efficiency, sensitive range and information integration has many leading advantages. At present, machine vision is mainly used in the field of industrial automation, in the scene of fast moving items to be detected, high accuracy requirements and high repeatability of work, the work efficiency of machine vision equipment is significantly improved compared with the human eye, and it can replace the human eye in a variety of scenarios to achieve recognition, positioning, measurement, detection and other functions.