scholarly journals Color Inverse Halftoning Method with the Correlation of Multi-Color Components Based on Extreme Learning Machine

2019 ◽  
Vol 9 (5) ◽  
pp. 841 ◽  
Author(s):  
Erhu Zhang ◽  
Yan Zhang ◽  
Jinghong Duan
Keyword(s):  
Image Quality ◽  
Extreme Learning Machine ◽  
Color Image ◽  
Simple Extension ◽  
Common Pattern ◽  
Look Up Table ◽  
Inverse Halftoning ◽  
Learning Machine ◽  
Halftone Images ◽  
Color Components

Look-up table (LUT) based method is a popular and effective way for inverse halftoning. However, it still has very large development space to improve the reconstructed color image quality for color halftone images, because most of the existing color inverse halftoning methods are the simple extension of LUT methods to each color components separately. To this end, this paper presents a novel color inverse halftoning method by exploiting the correlation of multi-color components. Through considering all existent contone values with the same halftone pattern in three color component tables, we firstly propose a concept of common pattern. Then the extreme learning machine (ELM) is employed to estimate the contone values for nonexistent patterns according to common patterns in color LUT, which can not only improve the fitting precision of nonexistent values but also has fast transformation speed. Experimental results show that the proposed method achieves a better image quality when compared to previously published methods.

Look-up table (LUT) method for inverse halftoning

2001 ◽  
Vol 10 (10) ◽  
pp. 1566-1578 ◽  
Author(s):  
M. Mese ◽  
P.P. Vaidyanathan
Keyword(s):  
Look Up Table ◽  
Inverse Halftoning

A High Efficiency Class-E Power Amplifier Over a Wide Power Range Using a Look-Up Table Based Dynamic Biasing Scheme

2015 ◽  
Vol E98.C (4) ◽  
pp. 377-379
Author(s):  
Jonggyun LIM ◽  
Wonshil KANG ◽  
Kang-Yoon LEE ◽  
Hyunchul KU
Keyword(s):  
Power Amplifier ◽  
High Efficiency ◽  
Look Up Table ◽  
Dynamic Biasing ◽  
Class E

Assessment of the look-up table using the tubular and bundle CHF data and modification of the bundle correction factor

Kerntechnik ◽  
2006 ◽  
Vol 71 (4) ◽  
pp. 192-202
Author(s):  
D. K. Chandraker ◽  
P. K. Vijayan ◽  
D. Saha ◽  
R. K. Sinha
Keyword(s):  
Correction Factor ◽  
Look Up Table ◽  
The Look

Panorama real-time unrolling of catadioptric omni-directional images with look-up table based on FPGA

2009 ◽  
Vol 28 (12) ◽  
pp. 3135-3137
Author(s):  
Bin WANG ◽  
Zhi-hui XIONG ◽  
Gang CHENG ◽  
Li-dong CHEN ◽  
Mao-jun ZHANG
Keyword(s):  
Real Time ◽  
Look Up Table
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