| With the development of information, the demand to information visualization is becoming higher and higher,and the single-projector image can't meet people's demands.The multi-projector showing system is the mainstream of development. A new multi-projector image mosaic algorithm and its concrete implementing plan were proposed for the high cost and computational complexity in recent multi-projector showing system, and the problem that the system can be restricted by the environment easily. The method proposed in this paper with lower computational complexity, it can be used in different situations, and the correction speed is fast.This paper proposes a geometry correcting algorithm for different projection scenes in geometry correction. This algorithm shows the non-linear transformation relationship among each coordinate space by means of Bezier and gives out the transition function between original image and image which will be distorted. For the features of the ideal additive color gamut projector, this paper proposes a improved color correcting algorithm in color correction.Using the camera and B spline curve model for three times, the algorithm gets the transfer function of each projector's color. Then it makes out transfer function formula of basic linear color, and adjusts the input color. In order to solve the brightness jump in overlap section and make the whole image comfortable,the paper chooses fusion function and adjusts the parameter to change the brightness of original image according to different conditions.The experimental results indicate that the whole projecting image has had no geometry changes and the joint is perfect. The color of each projector image is same and the brightness in overlap section has no change. The method proposed in this paper is correct and effective.This technology can be applied on both plane and curved screen. It can use common projector to keep the advantages and cut the cost. This kind of technology can be used in many areas in the future. |
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