AOI detection technology is divided into image contrast technology and vector analysis technology
Author:Mao Zhaojun Time:2021-06-09 12:30 Browse(887)
AOI detection technology is divided into image contrast technology and vector analysis technology, touch screen and OLED forum
In the development of AOI detector equipment, the method of detecting bad quality problems is realized by capturing the equipment image and comparing it with the standard image set in the computer program. A variety of detection and analysis technologies include image statistical analysis, vector analysis, graphic similarity analysis, brightness analysis, color scale analysis, character recognition, IC bridge analysis and so on, Whether it is the mainstream image statistics technology or new technology, vector analysis technology, their working principle is to capture the image and then compare the set standard image to get the detection results. The current AOI detection technology is divided into image contrast technology and vector analysis technology.6 y# i: p   ?" A' X2 K& F; p' w; A9 b4 r    E" G        The difference between vector analysis and image ratio is that image comparison technology uses pixel image to compare pixel image, while vector analysis uses vector image to compare vector image. Technically speaking, the comparison content is totally two different data. And the advantage of vector analysis is also reflected here. People who have studied image design know that vector image can be infinitely enlarged and reduced without distortion, while pixel image or bitmap will be distorted when it is enlarged. The larger the image is, the more blurred it is. This determines the high requirements and dependence of image contrast technology on hardware. Therefore, we know that vector analysis is a higher level contrast technology different from image contrast. The bad detection rate of vector analysis technology for small or small components is higher than that of image contrast technology.- y* B' e5 @& S5 y0 b! Q    M% f/ ]3 a$ R) e4 r3 j& Z# j9 l! \ 1 Q% O8 [3 Q* v1 L0 S/ E。。。。。

AOI detection technology is divided into image contrast technology and vector analysis technology

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