Single shot high dynamic range imaging using power law transformation and exposure fusion
Athira Raveendranath, Anoop K. Johnson · 2016
High Dynamic Range Imaging (HDRI) is an emerging technique for the generation of high quality images. Most commonly adopted method for generating HDR images is the fusion of multiple exposure Low Dynamic Range (LDR) images. But in such cases the output image can get affected by certain artifacts such as image misalignments, ghosting etc. Single shot HDR Imaging is an efficient approach to overcome these artifacts. In this paper, we propose a method for the generation of high dynamic range image from a single input image using power law transformation. Power law transformation generates differently exposed images by varying the gamma value of the input image. Once the multiple exposure images are generated, they are fused together based on certain quality measures such as contrast, saturation, well exposedness etc. The result shows the effectiveness of the proposed approach which is verified qualitatively and quantitatively.