I define "open innovation" as an ideation, invention and implemention process that is accessible and transparent. It is accessible because anyone can participate in any stage of an innovation project, regardless of location, education, experience or title. It is transparent, because anyone can observe it - projects aren't shrouded in secrecy.
Open innovation is also a platform. It enables an organization to amass large quantities of new and novel ideas. Accessibility enables diverse contributions from a wide array of people, and transparency fosters authenticity. These characteristics position open innovation to amplify benefits inherent to crowdsourcing and gamification strategies as well.