Real time multisensor Laplacian fusion on FPGA

Image fusion is a technique to combine multiple images from a single sensor or multiple sensors into a single composite image without introducing artifacts. This paper presents a novel implementation of Laplacian pyramid image fusion on field programmable gate array (FPGA). Real time image fusion using pyramid decomposition is achieved by utilizing re-usable memory architecture and parallelisation techniques to give an output in 35ms for an image of resolution 320×256, which provides a speedup of 17 times than the general purpose computer based solution and a speedup of 2.2 times compared to a GPU based implementation.