How to choose the right autofocus industrial camera
The object of image processing is the image from the industrial camera, so the selection of the industrial camera, the industrial camera and the industrial camera is an indispensable and very important step.
The first thing you need to figure out is your own inspection task, whether it is static photography or dynamic photography, how often to take pictures, whether to do defect detection, size measurement or positioning, what is the size (field of view) of the product, how much accuracy needs to be achieved, and how much The performance of the software, the on-site environment, and whether there are other special requirements. If it is a dynamic photo, what is the motion speed, select the minimum exposure time and whether a progressive scan camera is required according to the motion speed; and the frame rate (maximum photographing frequency) of the camera is related to the pixel, usually the higher the resolution, the lower the frame rate. The frame rate of different brands of industrial cameras is slightly different; the resolution of the required industrial camera can be calculated according to the different detection tasks, the size of the product, the resolution to be achieved, and the performance of the software used; the most important thing to consider in the field environment is Temperature, humidity, interference and lighting conditions to select different industrial cameras.
Followed by CCD or CMOS
CCD provides good image quality and anti-noise ability. Although the size of the system is increased due to the addition of external circuits and the reproduction is improved, the circuit designer can be more flexible and better improve the performance of some special concerns of CCD cameras. . CCD is more suitable for applications that require very high camera performance and less stringent cost control, such as astronomy, high-definition medical X-ray images, and other applications that require long exposure and strict image noise requirements.
CMOS has the advantages of high yield, high integration, low power consumption, and low price. But the image itself has more noise. The current CMOS technology continues to develop, has overcome many of the early shortcomings, and has developed to a level that can be compared with CCD technology in terms of image quality. CMOS is suitable for occasions that require small space, small size, and low power consumption, but the requirements for image noise and quality are not particularly high. Such as most auxiliary lighting industrial inspection applications, security applications, and most consumer commercial digital cameras. At present, CCD industrial cameras still occupy a dominant position in visual inspection solutions.