Abstract
In this paper, we present a new algorithm to remove haze from a single image. The proposed algorithm extracts transmission iteratively under the assumption that large-scale chromaticity variations are due to transmission while small-scale luminance variations are due to scene albedo. A nonlinear edge-preserving filter is introduced to incrementally refine subtle transmission map while still keeping sharp transmission map distinct. The algorithm is verified by both synthetic images and real-scene photographs. The results demonstrate that our method can produce transmission maps without being affected by the local albedo variations and, furthermore, recover haze-free images. On top of haze removal, several applications of the transmission map including refocusing and relighting are also implemented.
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Zhang, J., Li, L., Yang, G. et al. Local albedo-insensitive single image dehazing. Vis Comput 26, 761–768 (2010). https://doi.org/10.1007/s00371-010-0444-z
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DOI: https://doi.org/10.1007/s00371-010-0444-z