What are the differences between "domestic AOI" and "imported German AOI"?

At present, many brands of domestic AOI and Delu machines use vector analysis technology (the three primary colors of RGB). This technology patent belongs to Japan OMRON.

The models after Delu 7500 all use three primary color technology. The previous models all use black and white light gray scale technology

The earliest domestic AOI Shenzhou Vision used the picture comparison before and now it is also three primary colors. Add pictures for comparison

The three primary colors are the current mainstream AOI detection algorithm. Most domestic machines are using this technology: Octavia Cologne Vigento