Technological Progress In Machine Vision
In the machine vision system, the light source plays a very important role. Choosing the right machine vision light source is the key factor determining the success or failure of the whole system. The main purpose of the light source is to make the measured object and the background as distinct as possible, and obtain high quality and high contrast. image.
In machine vision systems; key technologies include light source illumination technology, industrial lenses, cameras, image capture cards, image processing cards, and fast and accurate actuators. In machine vision applications; good light sources and lighting solutions are often the key to the success of the entire system; they play a very important role; it is not simply illuminating objects. The combination of the light source and the illumination scheme should highlight the feature quantity of the object as much as possible; (machine vision 3D detection) should make a significant difference between the part where the object needs to be detected and those of the unimportant part; increase the contrast; Ensure adequate overall brightness; changes in the position of the object should not affect the quality of the image. Transmitted and reflected light is commonly used in machine vision applications. For the reflected light, the relative position of the light source and the optical lens, the texture of the surface of the object, the geometric shape of the object, the background, and the like should be fully considered. The choice of light source must conform to the required geometry, illumination brightness, uniformity, spectral characteristics of the luminescence, etc.; also consider the luminous efficiency and service life of the light source. The optical lens is equivalent to the lens of the human eye; it is very important in machine vision systems. The quality of a lens's imaging quality; that is, its excellent or bad for aberration correction; can be measured by the aberration size; common aberrations are spherical aberration, coma, astigmatism, field curvature, distortion, chromatic aberration, etc.
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