Local detail preserved exposure fusion with realistic brightness

Exposure fusion is an effective method to depict a high dynamic range scene in a single image, but the contradiction still remains: conforming to real brightness distribution of target scene and preserving local details within different luminance. A detail preserved fusion algorithm with realistic brightness is proposed in this paper to balance the contradiction. A new piecewise well-exposedness evaluation function is introduced to avoid the possible luminance reversion and loss of details under extreme high and low brightness. Furthermore, the proposed global brightness control function insures more real brightness distribution of blended image. Then local edges and textures are preserved by proposed local detail preserved function. The experimental results show that our algorithm represents more details than some commonly used algorithms. In the view of appreciation, our approach could show a more real brightness distribution of target scene.