Abstract: The flame feature is the most important and straight forward factor to reflect the burning properties of priming systems. Several flame collection methods were compared. Due to the short burning time, fast and noncontact characteristics of priming systems, a machine vision system was established based on the digital image processing technology developing rapidly in these years. An advanced high-precision mass-buffer-memory color planar-array CCD camera and a color frame grabber card were adopted for remote sensing. A series of flame images were obtained precisely, and the flame images were analyzed with the digital image processing technology based on the flame color and shape. The technology provides a reference for further image processing and analysis.