Block-Extraction and Haar Transform Based Linear Singularity Representation for Image Enhancement

Figure 8

The enhancement results. (a) is the original image. (b) and (c) are the enhanced images by the proposed method, by taking as and , respectively. (d) and (e) are the enhanced images by the NSCT method, by similarly taking as and , respectively. (f) is the enhanced image by the alpha-rooting method.

(a)

(b)

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(d)

(e)

(f)