Abstract: The digital camouflage technology is a new form of camouflage technology, which is convenient for automated design and construction. It converts the backgrounds of targets to mosaic pictures by means of computer technology. The new camouflage pattern arranges the mosaic blocks with different colors on a camouflage surface according to certain rules, which breaks down the smoothed edges of traditional camouflage pattern. The digital camouflage technology has more remarkable camouflage effect compared with traditional technology. Spatial color mixture is one of the main features of digital camouflage distinguishing from other forms，and is also a key approach to improve disguise effect for digital camouflage. However, the spatial color mixture research on digital camouflage is relatively lack at home and abroad, and cannot provide enough support for the research on digital camouflage design. An effective parameter, spatial-color-mixture ratio, is proposed to characterize the degree of spatial color mixture through the analysis of spatial color mixture progress of digital camouflage. The characterization method was proved to be feasible and effective in practice, which could provide theoretical support for the subsequent work of digital camouflage design.

Key words: ordnance science and technology, digital camouflage, spatial color mixture, color mixture characterization