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It is an ill-posed problem to restore a high dynamic range (HDR) image from one low dynamic range (LDR) image. Instead of using conventional reverse tone mapping to restore the HDR image, two differently exposed LDR images are generated from the underlying LDR image by fusing model-driven and data-driven approaches. One is brighter than the input image and the other is darker than the input image. The three images are fused together via a multi-scale exposure fusion algorithm to produce a desired HDR image which can be displayed directly by existing LDR digital devices. The proposed algorithm can be embedded in smart phones or digital cameras to produce a pseudo-HDR image

Model and Data Driven Pseudo-HDR Imaging Chaobing Zheng Zhengguo Li Shiqian Wu

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