Introduction Of Video Measuring Machine
Time:2017-12-26 10:15 Author:administrator
Although in the past few years, machine vision has undergone some revolutionary changes, the color image processing field is still at a relatively slow rate of development, one of the main reasons is the color to solve a machine vision problem always take more costs and processing ability than an equivalent grayscale image solution. However, this situation has changed in recent years. With the machine vision being used in the semiconductor, pharmaceutical, textile and other industries, ordinary grayscale visual system has been unable to meet with the needs of users. In some applications, it is necessary to use a color machine vision functions,such as color pattern matching, chromatographic analysis, the detection of color printing, packaging recognition functions etc.
For the needs of color vision applications, NI provides hardware and software solutions. For hardware, NI supports thousands of cameras from different manufacturers, can collect color image from a variety of analog cameras, 1394 Camera or Link camera. Meanwhile NI provides a powerful image software support, in the Vision Builder AI and VDM, both contain multiple color image processing functions, which can complete directly positioning based on the original color image, pattern matching, color segmentation, chromatographic analysis and so on.
Cognex Corp. has also introduced In-Sight Micro product series with three types color vision system, where the new In-Sight 1403C is a two million pixels (with a resolution of 1600 × 1200) of the system, being able to check a variety of color with high-resolution applications.
Color Vision System has always been the ADLINK development direction, but in the view ADLINK, color application is applied only in color application for the proper occasion, while grayscale vision system does not exist superior or inferior difference, just to see whihch one is better. For example, in the medical industry, for the analysis of X-ray images, the high-order gray-scale image processing will be the first choice, but for endoscopic assisted pathological analysis, color image processing becomes necessary. Therefore, color vision systems, as the imaging system is relatively complex, involved in relatively large data (information), high image processing algorithms, subjectded to certain restrictions in previous years of development, and has less succeful applications than gray-scale vision system, but will be in a rapid development after overcoming technical bottlenecks recent years.
Increasing demand for 3D sensing applications
Previously users may only need 2D effects, but now more and more users began to demand to achieve the 3D detecting effect. Thus, SICK 3D visual sensor is developed in the needs of users. Ranger C product series adopt the camera connection technology to connect with a PC, which simplifies the integration process and to improve the collection rate. In 3D mode, Ranger C can collect about 30,000 images per second, each picture contains 1536 high-quality three-dimensional coordinates, equivalent to 45 million 3D points per second.
Embedded sensor products will become mainstream
Several years ago, some experts predict, embedded sernsor products will gradually replace the board type products to become mainstream of machine vision products.
In recent years, the development of machine vision has been focused on intelligent and integrated two aspects. On the one hand, with the continuous improvement of hardware processing capability, engineers are able to use more advanced vision algorithms to solve complex visual problems. On the other hand, the demand for automation applications has been gradually guiding the machine vision system from the traditional PC-based board-type products to embedded systems which has a integration of collection, analysis and judging, embedded products will gradually replace the board card products. The majority of embedded operating systems are C language-based, using a high-level language C to develop embedded system is a basic work, which can improve work efficiency, shorten development cycles, more importantly is to develop products of high reliability, maintainability, and ease of continuous improvement and upgrading, etc.
For industrial inspection machines, users prefer to use embedded devices with real-time operating system as no need for a separate IT department support, which makes the practical operation has a better independence and better reliability. Some experts have noted that smart cameras and high-performance embedded vision processing systems will occupy a major share of the vision hardware market in the future. NI recently has released a brand new embedded machine vision system that can help the manufacturing industry engineers and system integrators to quickly build high-speed real-time machine vision systems during product classification, assembly verification, packaging inspection and other applications.
Software upgrades status
Machine vision has a popular explanation,that is to use machines to replace human eye in measurement and judgement. With the development of embedded processor technology, processing power of visual processing hardware is increasing, meanwhile it also uprades software status. Under certain image quality, image processing software algorithms can directly determine whether the structure is right or not, so the vision software is critical throughout the system.
From point of view that the practical application of machine vision applications as an optical and electrical integration,the determining factor of success has always been a in the assessment of the overall strength. Today, the focus of competition in the machine vision is no longer confined to the hardware itself, but more steering with matching software. For this reason, in addition to continuing to invest in the motion control and system platforms, the ADLINK also gradually began to change in the role of systems integration solutions provider. For the image processing software, it has started cooperation with Euresys company in Belgium from 1998 so that it has accumulated a large number of customers and mature applications.
NI also provides engineers with the appropriate software platform for different applications. For precision equipment manufacturing, laboratory visual processing applications, NI provides a powerful Vision Development Module VDM. Vision Development Module can support development based on LabVIEW, VC, VB, and other platforms, containing hundreds of powerful visual tool that enables accurate measurement, positioning and pattern matching functions, suitable for professional vision systems developers. For Vision applications on industrial production lines, NI provides a flexible and easy to use configurable software platform Vision Builder AI. Vision Builder AI is built in with hundreds of common vision processing tools, users will be able to solve the vast majority of vision applications without programming, suitable for non-professional machine vision end-user to develop flexible vision application.
Cognex introduce In-Sight Explorer version 4.3 software and provides six kinds of new visualization tools and 22 filters for EasyBuilder Configuration environment. In addition, a large number of communications functions of In-Sight vision systems are addd with new supports for CC-link and MC Protocol two communication protocols, these two agreements are mainly used in Mitsubishi Electric automatic sequencer.
Cannot be separated from the solution
Machine vision technology development to today.Always inseparable with automatic industrial.Hardware and software for machine vision have been become most important part for manufacturer.Thats will be have higher requirements for system integration.Industrial automation business requires the ability to work with the test or control system integration industrial automation systems, not independence vision application.At present, more and more enterprises have been put on machine vision used in conjunction with an existing line or test control system requirements,This requires vendors provide not only independent of machine vision products and providing industrial automation systems and integration of a complete solution.
Manufacturing production lines, machine vision systems not only need to be used with the field control system, while also taking into account the connection to the factory information system.General Visual systems suppliers often provide only the Visual aspects of the solution, but will leave the issue of industrial automation and it systems integration Integrator or end-user.NI provides a unified software environment for industrial automation, as well as a variety of modular hardware platform, such as a programmable automation controller (PAC), industrial touch screens and distributed based on deterministic Ethernet I/O, and so on.User in LabVIEW, a graphical development platform designed specifically for engineers implement machine vision, motion control, human-machine interface and data acquisition functions.While LabVIEW powerful compatibility ensures seamless connections to remote databases, and enterprise management systems in order to build a complete automation platform at a minimum cost.
