Different light sources will affect the imaging effect and quality of the image, so manufacturers need to choose a set of most suitable machine vision light sources, so as to ensure the quality of products through the high detection accuracy and stability of the light source. So, for companies, when buying a light source, in addition to knowing which machine vision light source is of good quality, they also need to understand the following selection methods.
Selection method of machine vision light source
Contrast pair Machine vision Is a very important key factor, because only the high contrast Machine vision light source In order to better distinguish between product features and image features that need to be ignored, so that the machine can more easily identify unqualified products and increase the accuracy of detection. Therefore, you must choose a high-contrast visual light source.
Buying Machine vision light source At the time, you should try to buy products with high brightness. Because if the brightness of the light source is not enough, the contrast of the image will not meet the requirements, which will increase the noise on the image. At the same time, if the brightness of the light source is not enough, the aperture will be increased when shooting, thereby reducing the depth of field, thus increasing the vision of the machine Difficulty of identification.
Finally, in the purchase Machine vision light source At this time, the light source product that is least sensitive to the position of the component should also be selected. Because only the sensitivity is small, the image will not change regardless of the angle of the light source placed in the camera's field of view. On the contrary, if the sensitivity is too high, it will produce specular reflections on the bright area when shooting, so it will not Conducive to the feature extraction of products and pictures in the next step.
The content introduced above for everyone is the selection machine Visual light source Several methods can be referred to at the time. top Machine vision light source After being put into use, you can better find the characteristics of the product and its image, so you must choose a visual light source that can produce the greatest contrast, provide the highest brightness, and is not sensitive to the position of the part, so as to better improve the detection accuracy Degree, thereby improving the quality of product inspection.