Matters needing attention in image measuring instrument regarding light source control
Matters needing attention in the light source control of the image measuring instrument. The imager is a high-magnification optical microscope used to magnify and image the workpiece to be measured, and then the CCD system transmits the magnified image to the computer to generate a complete engineering drawing through computer software. The imager is such a measuring instrument. The measured object will include the contour, size and angle of the workpiece. The automatic imager can learn and memorize automatic processes such as focusing, point selection, function switching, manual calibration and light matching. It can also automatically complete edge extraction, focusing, matching, measurement synthesis and image synthesis. Therefore, it is said that the automatic image measuring instrument improves work efficiency and saves costs.
With the increasing maturity of measurement technology, the emergence of a new generation of measurement tools makes measurement more convenient and accurate. The light source is an important core of the automatic image measuring instrument. Now the measurement software can control the light source more flexibly. According to different measurement workpieces, the measurement personnel can independently adjust the light source, and design a good lighting scheme to achieve the expected effect, so as to obtain more accuracy According to the measurement data, the choice of light source intensity is determined according to the specific situation, and the definition of the captured image is determined. However, this method will have a certain degree of randomness. Even for the same measurement scene, different operators may set different light source intensity schemes. Of course, the lighting effect is also different from the natural measurement results. The automatic image measuring instrument has the function of automatically turning on the light source and determining the best light source intensity based on the characteristics of good light source brightness and rich image details. For contour light sources and coaxial light sources The light source, because there is only one incident direction, the measurement software can only be used to adjust the brightness of the light source. The contour light source and the lens are located on different sides of the workpiece. They are mainly used to measure the outer contour of the workpiece. The coaxial light source is used for some with high reflectivity. For surface workpieces, measurements such as glass are also suitable for deep holes or deep grooves. These are the adjustment methods for the light source control problems of the image measuring instrument, and they are also very good, and are recommended to many users.
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