There are many cases where tof camera is used in the field of machine vision, such as robot vacuum, food delivery robots, industrial robots, etc. tof camera can convert image signals into digital signals; the image processing system performs various operations on these signals to extract the target's features, such as area, quantity, width, height, etc., are obtained and then output results according to preset conditions, including size, angle, number, whether it is qualified, yes/no, etc.
The feature of tof camera used in machine vision system is to improve the flexibility and automation of production. In some dangerous working environments that are not suitable fo where artificial vision is difficult to meet the requirements, machine vision is often used to replace artificial vision; at the same time, in the process of large-scale industrial production, manual inspection of product quality is inefficient and has a high error rate. Using machine vision system can greatly improve production efficiency. Moreover, machine vision is easy to realize information integration, which is the basic technology to realize computer integrated manufacturing. The products can be measured, guided, detected, and identified on the fast production line to better complete the production tasks.
A complete machine vision system includes the following products:
1. Camera
Industrial cameras are a key component in machine vision systems. Different technologies should be selected according to different application scenarios, such as using tof cameras or other cameras with different resolutions. The choice of camera not only directly determines the captured image resolution, image quality, etc., but also is directly related to the operating mode of the entire system.
2. Light source
The light source is one of the key parts of machine vision applications. It is divided into visible light and invisible light. Its main goal is to project light onto the measured object in a suitable way, highlighting the contrast of the measured feature part, and making the measured area more visible. Clear and accurate formal responses. Therefore, different light sources should be selected for different practical applications.
3. Lens
In the machine vision system, the main function of the lens is to place the imaging target on the photosensitive surface of the image sensor, and the basic function of the lens is to realize beam transformation (modulation). Select the appropriate type according to the accuracy (high/low) required by the inspection product; for ordinary lenses, select the model according to the working distance and product field of view; in special cases, other types of lenses need to be selected, such as high-magnification magnification lenses.
