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Machine Vision
Machine vision is a comprehensive technology, including image processing, mechanical engineering technology, control, electric light source lighting, optical imaging, sensors, analog and digital video technology, computer software and hardware technology (image enhancement and analysis algorithms, image cards, I/O card, etc.). A typical machine vision application system includes image capture, light source system, image digitization module, digital image processing module, intelligent judgment decision-making module and mechanical control execution module.
Working Principle
The machine vision inspection system uses a CCD camera to convert the detected target into an image signal, which is sent to a dedicated image processing system, and converted into a digital signal according to pixel distribution, brightness, color and other information, and the image processing system performs various calculations on these signals To extract the characteristics of the target, such as area, quantity, position, length, and then output the results according to the preset tolerance and other conditions, including size, angle, number, pass/fail, presence/absence, etc., to realize the automatic recognition function .
Application field
The application of machine vision mainly includes two aspects: detection and robot vision:
1. Detection: It can be divided into high-precision quantitative detection (such as cell classification of micrographs, size and position measurement of mechanical parts) and qualitative or semi-quantitative detection without measuring instruments (such as product appearance inspection, assembly line zero Component identification and positioning, defect detection and assembly completeness detection).
2. Robot Vision: It is used to guide the operation and action of the robot in a large range, such as picking workpieces from the messy pile of workpieces sent by the hopper and placing them on the conveyor belt or other equipment in a certain orientation (ie, the problem of hopper picking). As for operations and actions in a small area, tactile sensing technology is also needed.
