The seamless tiled display that is based on the multi projector is an effective realization for the wide field and high resolution display of graph

image

video and so on. The key problem for the seamless tiled display is the solution of color maladjustment. The existing analysis result of the reason for color maladjustment includes two parts

one is the variation characteristic of the projectors color output

and the other is the effect of the projecting screen and environment. So many photometric calibration techniques are proposed in recent years

and there are three types in sum which include edge blending based calibration technique

single projector light based calibration technique and gamut output matching based calibration technique according to the principle and implement method of the solution for color maladjustment problem. We compare the advantage and disadvantage of these three techniques in the seamless display effect

maintainability

expansibility and other aspects. The future of this field is the real time photometric calibration considering different type of projector

different shape and reflecting characteristic of display screen and moveable observer.