High dynamic range imaging on mobile devices

Natural scenes usually produce radiance maps that have a dynamic range much larger than the dynamic range of the imaging sensors. Due to this fact the captured images, almost always, contain under-exposed and saturated regions. Among several solutions, proposed in the open literature, the multi-frame approaches have been shown to produce high quality results by combining several shots of the same scene, captured at different exposure times. Here we introduce a low complexity multi-frame approach suitable for mobile implementations. We have implemented our method in Symbian OS in a Nokia cameraphone and the results obtained with our proposed system are shown in the paper.