While the state of vision systems may not have vastly shifted over the last few years, the hardware is certainly less expensive today, and the systems are much smarter and cost-effective.
In addition to vision systems boosting food safety, processors are using vision systems for standard processing procedures such as monitoring label registration along with missed and faulty packaging to help with quality assurance.
While the fundamental design and operation of vision systems currently available in the area of quality assurance haven't changed dramatically in recent years, what is changing is the increased use of vision systems in this space due to lower prices for the components.