A Multiscale Contrast Enhancement for Mammogram Using Dynamic Unsharp Masking in Laplacian Pyramid

2019 ◽  
Vol 3 (5) ◽  
pp. 557-564 ◽  
Author(s):  
Xiaoman Duan ◽  
Yuan Xu ◽  
Yingjie Mei ◽  
Shuyu Wu ◽  
Qingqing Ling ◽  
...  
Keyword(s):  
Contrast Enhancement ◽  
Laplacian Pyramid ◽  
Unsharp Masking

Evaluation of analog contrast enhancement and digital unsharp masking in low contrast portal images

1989 ◽  
Vol 17 ◽  
pp. 159-160
Author(s):  
J. Weiser ◽  
D. Gur ◽  
M. Deutsch ◽  
R. Gennari ◽  
W. Bloomer ◽  
...  
Keyword(s):  
Contrast Enhancement ◽  
Low Contrast ◽  
Unsharp Masking ◽  
Portal Images

Evaluation of analog contrast enhancement and digital unsharp masking in low-contrast portal images

1990 ◽  
Vol 17 (1) ◽  
pp. 122-125 ◽  
Author(s):  
John C. Weiser ◽  
David Gur ◽  
Rose C. Gennari ◽  
Melvin Deutsch
Keyword(s):  
Contrast Enhancement ◽  
Low Contrast ◽  
Unsharp Masking ◽  
Portal Images

An Improved Adaptive Unsharp Masking Image Enhancement Algorithm

2013 ◽  
Vol 325-326 ◽  
pp. 1547-1550
Author(s):  
Li Zhu ◽  
Chun Qiang Zhu
Keyword(s):  
Contrast Enhancement ◽  
Real Time ◽  
Image Enhancement ◽  
Digital Tv ◽  
Image Sharpening ◽  
Real Time Processing ◽  
Time Processing ◽  
Unsharp Masking ◽  
Image Contrast Enhancement ◽  
Enhancement Algorithm

When needing a reliable adaptive image contrast enhancement in real-time processing such as digital TV postprocessing,This goal is achieved by an improved adaptive unsharp masking image enhancement algorithm in the paper. The proposed improved adaptive unsharp masking filter controls the contribution of the sharpening path by the output of Laplacian and works in such a way that contrast enhancement occurs in high detail areas and little or no image sharpening occurs in smooth areas. The experiment shows that this improved algorithm greatly reduce the complexity of computing and can be reliably used.

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