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What are the system components of machine vision
Author:Administrator   Published in:2019-08-30 18:08

Machine vision has a huge role in industrial production. It can replace the human eye to make measurements and judgments to achieve more efficiency and better quality. Many manufacturers have greatly improved production efficiency and automation of production when using machine vision. Well, such an efficient and useful machine vision system. What parts is it made up? Let's take a look at the system components of machine vision by Dior Technology.


  What are the system components of machine vision?

  Lighting

  Illumination is an important factor affecting the input of the machine vision system, which directly affects the quality and application effect of the input data of the machine vision light source. Since there is no universal machine vision lighting device, the corresponding lighting device should be selected for each specific application example to achieve the best results. The light source can be divided into visible light and invisible light. Several commonly used sources of visible light are white, fluorescent, mercury, and sodium. The disadvantage of visible light is that light energy cannot be kept stable. How to make light energy stable to a certain extent is an urgent problem to be solved in the process of practical use. On the other hand, ambient light may affect the quality of the image, so a protective screen can be used to reduce the effects of ambient light. The illumination system can be divided into: backlight, forward illumination, structured light and stroboscopic illumination according to its illumination method. Among them, the back illumination is placed between the light source and the camera, and has the advantage of obtaining a high contrast image. The forward illumination is that the light source and the camera are located on the same side of the object to be tested, which is convenient for installation. The structured light illumination projects a grating or a line source or the like onto the object to be measured, and demodulates the three-dimensional information of the object to be measured according to the distortion generated by them. The stroboscopic illumination is to illuminate a high-frequency light pulse onto an object, and the camera capture requires synchronization with the light source.


Machine vision

  2.FOV (FieldOfVision) = required resolution * sub-pixel * camera size / PRTM (part measurement tolerance ratio) lens selection should pay attention to: 1 focal length 2 target height 3 image height 4 magnification 5 image to target distance 6 center Point/node 7 distortion.


  3. According to different standards can be divided into: standard resolution digital camera and analog camera. Different cameras and high-resolution cameras should be selected according to different practical applications: line scan CCD and area array CCD; black and white camera and color camera.


  4. The visual processor integrates the capture card and the processor. In the past, when the computer was slow, the visual processor was used to speed up the visual processing task. Now that the capture card can transfer images to memory quickly, and the computer is much faster, the visual processor is now used less.


  5. Image capture card

  A capture card is just one component of a complete machine vision system, but it plays a very important role. The image capture card directly determines the interface of the camera: black and white, color, analog, digital, and so on.


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  Typical is a PCI or AGP-compatible capture card that can transfer images to computer memory for processing. Some capture cards have built-in multiplexers. For example, a visual light source can be connected to 8 different cameras and then tell the capture card to capture the information captured by that camera. Some of the visual light sources have built-in digital inputs to trigger the capture card to capture. When the capture card captures the image, the digital output port triggers the gate.


  What are the system components of machine vision? I believe everyone has seen a certain understanding here. If you want to know more about machine vision systems, you can check out the Dior Technology website. If you want to buy machine vision, you can consult on Dior Technology's official website. Dior adheres to the product positioning of “clearer, richer and more delicate”. After more than ten years of struggle and accumulation, TEO brand camera is praised by the industry for its exquisite craftsmanship, high-quality images and perfect functions, even in the image measurement industry. Become the preferred camera brand. The company not only develops, produces and sells TEO brand products, but also provides comprehensive services such as technical training, system design and project customization. Now it has passed ISO9001:2000, UKAS international quality certification, and its products comply with UL, CSA, CE, 3C and other international certifications.

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