This Recommendation presents the overview and requirements for machine vision-based applications and services in smart manufacturing. It describes basic concept, scenario and ecosystem of machine vision, and identifies several typical requirements which are data acquisition, data pre-processing, data processing and etc. This Recommendation also gives reference model for machine vision-based applications and services in smart manufacturing. The general goals of standardization for machine vision service are: Define the requirements of machine vision-based services and applications Help ender users and providers to specify the machine vision tasks and the solutions. Enhance confidence in machine vision ecosystem and open new applications for machine vision system