F. Kou, W. Chen, Z. Li and C. Wen, "Content Adaptive Image Detail Enhancement," in IEEE Signal Processing Letters, vol. 22, no. 2, pp. 211-215, Feb. 2015. doi: 10.1109/LSP.2014.2353774
Detail enhancement is required by many problems in the fields of image processing and computational photography. Existing detail enhancement algorithms first decompose a source image into a base layer and a detail layer via an edge-preserving smoothing algorithm, and then amplify the detail layer to produce a detail-enhanced image. In this letter, we propose a new L0 norm based detail enhancement algorithm which generates the detail-enhanced image directly. The proposed algorithm preserves sharp edges better than an existing L0 norm based algorithm. Experimental results show that the proposed algorithm reduces color distortion in the detail-enhanced image, especially around sharp edges.
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