Machine vision technology is an interdisciplinary subject involving artificial intelligence, neurobiology, psychophysics, computer science, image processing, pattern recognition and many other fields. Machine vision mainly uses computers to simulate human visual function, extract information from the image of objective things, process and understand, and finally used for actual detection, measurement and control.

Basic introduction to

Machine vision mainly uses computers to simulate human visual function, but it is not only a simple extension of the human eye, more importantly, it has a part of the function of the human brain. It extracts information from the image of objective things, processes and understands it, and is finally used for actual detection, measurement and control.

System advantage

The application of machine vision technology in egg quality inspection has incomparable advantages over manual inspection. Surface defects, size and shape are important characteristics of egg quality. The detection using machine vision can not only eliminate the interference of human subjective factors, but also quantitatively describe these indicators, avoid the detection results that vary from person to person, reduce the detection classification error, and improve the productivity and classification accuracy.

System composition

A typical industrial machine vision application system, including digital image processing technology, mechanical engineering technology, control technology, light source lighting technology, optical imaging technology, sensor technology, analog and digital video technology, computer hardware and software technology, man-machine interface technology, etc.

Machine vision system in all aspects of quality detection has been widely used, for example: using laser scanning and CCD detection system parallelism and perpendicularity of large scale workpiece measuring instrument, it is to stabilize the collimation of laser beam to measure baseline, with a rotating shaft system, rotating prism sweep out the pentagon standard datum plane parallel or perpendicular to each other, with the large workpiece's surface to be tested. When machining or installing large workpieces, the device can be used to measure the parallelism and perpendicularity between surfaces. A dynamic detection system for the on-line measurement of geometric parameters of hot rolled rebar is realized by using strobe flash as illumination source and plane array and linear array CCD as detector of rebar contour size.

Visual technology monitors bearing load and temperature changes in real time, eliminating the danger of overload and overheating. The traditional passive measurement to ensure machining quality and safe operation by measuring the ball surface is changed into active monitoring.

With microwave as the signal source, according to the microwave generator issued different baud rate square wave, measurement of metal surface crack, microwave wave frequency is higher, the crack can be measured is smaller.

Machine vision system includes: light source, lens, camera, image processing unit, image processing software, monitor, communication/input/output unit and so on.

Machine vision system is to point to by fetching the image on a camera, then transfer the image to the digital processing unit, through digital image processing software, according to the pixel distribution and brightness, color and other information such as size, shape, color discrimination and detection, and according to the results of discrimination and detection device to control the scene.

The core technology of machine vision is digital image processing technology. Digital image processing is to convert various image signals into digital signals and use computers to process them. Digital image processing technology can be regarded as a general term of various image processing technology in a broad sense, which includes a series of work done by using computers and other electronic equipment. Such as image acquisition, acquisition, coding, storage and transmission, image synthesis and produce, image display, drawing and output, image transform, enhancement, restoration and reconstruction, feature extraction and measurement, target detection, expressing and describing, sequence image correction, image classification, representation and recognition, etc., all kinds of processing technology are interconnected, A practical image processing system often combines a variety of image processing techniques to obtain the desired results. Digital image processing technology has the advantages of good reproducibility, high processing accuracy, high flexibility and wide application.