一种适用于硬件实现的宽动态图像合成算法

ue to the high complexity of existing algorithms for wide dynamic synthesis，it is difficult to apply such algorithms to real-time systems such as in video surveillance. In this paper we propose a synthesis method that is very efficient with low complexity, while suitable for the wide dynamic image in hardware implementations. Firstly the proposed algorithm get two images of the same scene at different exposures. The missing information of the long-exposure image can be restored from the information of the corresponding area in the short-exposure image using the intensity value mapping function. The proposed algorithm uses only two original images, which means the amount of data is small, and it does not need to restore the radiometric response function and the exposure rate, leading to a low computational complexity. Meanwhile，the linear representation is more conductive to the hardware implementation. The experimental results show that the quality of the synthetic wide dynamic image is satisfactory.