Today s systems use better algorithms, have faster image subsystems, and display more pixels. Mr. Arena said, Given the pace of change in the computer industry, the implication is that AOI buyers should evaluate the relative age of a system s architecture. If it s more than a couple of years old, it s probably built on constraints that have been vastly improved or eliminated. Time Newer cameras with larger pixel arrays can capture more information about a PCB in each frame. This means that the board doesn t have to be moved so many times to get complete coverage.
Fewer frames have to be transferred for processing although each one is larger.
Also, downloading camera data in parallel will increase throughput compared to serial data transfer. At those speeds, the PCI bus of the computer becomes a problem. Of course, faster PCs also help when extreme speeds aren t required. The organization of the image-processing algorithms affects execution time as well. According to Mr. Langenberger from Agilent Technologies, Algorithms implemented as large statistical database models tend to be affected more by PC speed than algorithms that are more focused on feature extraction.