AOI system uses the self-developed normalized color correlation algorithm (normalized color correlation) to replace the commonly used gray correlation algorithm. Because the color correlation algorithm makes full use of all the information of the three fundamental colors in the color image, it has higher recognition accuracy and stability than the gray correlation algorithm.

Color correlation algorithm uses two times more information than gray correlation algorithm, so the color correlation operation speed is also reduced by two times, but by using the special operation instruction set (MMX) technology developed for multimedia applications, the system can search more image information in the same or shorter time. Color correlation algorithm can also be used to identify gray-scale algorithms difficult to identify the color marking devices, such as capacitance.

This system can rely on special light source setting, can make solder joint in less tin and more tin when the image and normal situation of the image light and dark degree of obvious change, so that can detect solder error. This system has the characteristics of high detection accuracy and low false detection.

Compared with other products, the absolute position dependence of butt welding foot is greatly reduced, so it can achieve better detection effect with the same positioning accuracy or even slightly lower. All detection algorithms are simple to operate without any parameter adjustment.

AOI system can learn all kinds of specifications and types of devices by frame at the outline of the device, without any special processing, the software will make corresponding feature extraction according to the device type, algorithm optimization and other automatic processing.

resistance, capacitor solder learning and IC solder learning are automatic, very convenient, fast. programming time is usually less than 0.5 hours. all detection algorithms are simple to operate without any parameter adjustment, and new image information can be continuously learned during detection without special debugging (debug) stages.

Programming learning process is also a detection process, learning process can be used by a variety of wrong circuit boards, without the need for completely correct standard board (golden board).

The learning process will detect the errors of the learned circuit board, which can play a role in debugging the new board on the production line.

AOI system can store all the error information found in the detection process in the database. Through SPC module software, managers and technicians can accurately and real-time grasp the work situation of the whole SMT production line, and make real-time diagnosis and processing of various anomalies. also can print the defect distribution map in real time.

AOI system is developed in China, for domestic development, with all Chinese user interface and all Chinese user documents, so domestic users are very convenient to use. Familiar with the Windows click and drag-and-drop operation mode, so that the domestic operation and programming staff feel more relaxed, the training of operators is generally not more than 1.0 hours. Programmer training generally does not exceed 0.5 days.

Only the XY coordinates of the device and the discharge list (BOM) of the circuit board or the export file of the placement machine can be automatically learned, without the need to establish and maintain a special component library, packaging library, or complex conversion software, suitable for the complex production environment in China.