A Subiective-Experiment-Based Color Gamut Expansion Algorithm Of Laser Projection Display

Recently, there is a new trend of development in the projection display field, new generation of projections like the home theater pursues higher color performance. Therefore, projection technology based on laser display, which with higher luminance, saturation and wider color gamut, has gradually become a hot topic in the field of projection display. Color management is widely used in the optimization techniques of display devices, and the color gamut expansion technology plays a vital role in image replication between laser projection device and general devices. With a great expansion algorithm, the advantages of wide gamut laser projection displays can be restored with more real, bright and colorful effectives.In this paper, research with comparative analysis among the existing color gamut expansion algorithms of the practical application of laser projection display has been made, and a new algorithm using the subjective experiment has been advanced to solve the visual distortion of saturation. Through the experiment, the new algorithm find out the links between the perception and the stimuli such as brightness, hue, saturation and background primary colors, then optimized the visual experience while maintaining the advantage of laser’s wide color gamut. In order to ensure the scientific and accuracy of the data, this paper introduces a psychophysical experiment method and redesigned it based on the actual needs of specific experimental implementation. In terms of hardware implementation, this paper proposed an overall method with discrete lookup tables to ensure the needs of real-time and reducing its presence in the hardware resources.