77-3: A High-Image-Quality OLED Display for Large-Size and Premium TVs

2017 ◽  
Vol 48 (1) ◽  
pp. 1134-1137 ◽  
Author(s):  
Hong-Jae Shin ◽  
Kwang-Mo Park ◽  
Shinji Takasugi ◽  
Yun-Sik Jeong ◽  
Jin-Mok Kim ◽  
...  
2019 ◽  
Vol 50 (1) ◽  
pp. 199-202 ◽  
Author(s):  
Hong-Jae Shin ◽  
Woo-Seok Choi ◽  
Min-Kyu Chang ◽  
Jae-Yi Choi ◽  
Soo-Hong Choi ◽  
...  

2020 ◽  
Vol 51 (1) ◽  
pp. 1131-1134
Author(s):  
Hong-Jae Shin ◽  
Soo-Hong Choi ◽  
Sung-Joong Kim ◽  
Jae-Kyu Park ◽  
Seong-Ho Yun ◽  
...  

Author(s):  
F. A. Heckman ◽  
E. Redman ◽  
J.E. Connolly

In our initial publication on this subject1) we reported results demonstrating that contrast is the most important factor in producing the high image quality required for reliable image analysis. We also listed the factors which enhance contrast in order of the experimentally determined magnitude of their effect. The two most powerful factors affecting image contrast attainable with sheet film are beam intensity and KV. At that time we had only qualitative evidence for the ranking of enhancing factors. Later we carried out the densitometric measurements which led to the results outlined below.Meaningful evaluations of the cause-effect relationships among the considerable number of variables in preparing EM negatives depend on doing things in a systematic way, varying only one parameter at a time. Unless otherwise noted, we adhered to the following procedure evolved during our comprehensive study:Philips EM-300; 30μ objective aperature; magnification 7000- 12000X, exposure time 1 second, anti-contamination device operating.


2019 ◽  
Vol 2019 (1) ◽  
pp. 104-107
Author(s):  
Ye Seul Baek ◽  
Youngshin Kwak ◽  
Sehyeok Park

The image quality is affected by the black luminance level of the image. This research aimed to investigate how low luminance levels are required to maintain image quality. The psychophysical experiment was carried out in a dark room using OLED display. Total of 6 different black luminance levels (0.003, 0.05, 0.1, 0.2, 0.3, and 1 cd/m2) were used in the experiment. Total of 20 participants was invited to evaluate the image quality. For the experiment, twelve test images are used and these test images categorized into three groups as dark, medium bright and bright image group by image histogram distribution. Each image is rendered by adjusting six different black luminance levels. Result found that the black level is higher than 0.1 cd/m2, the preference for the image is decreased. The best performance is achieved when the black level is 0.003 cd/m2, but there is no big difference from 0.1 cd/m2. The final result shows that a change in black level between about 0.003 cd/m2 and 0.1 cd/m2 does not significantly affect image quality.


2021 ◽  
Vol 52 (S1) ◽  
pp. 643-646
Author(s):  
Yang Guobo ◽  
Qiu Haijun ◽  
Huang Weiyun ◽  
Yang Yuqing ◽  
Long Yue ◽  
...  

2011 ◽  
Author(s):  
Carole Thiebaut ◽  
Christophe Latry ◽  
Roberto Camarero ◽  
Grégory Cazanave

2015 ◽  
Vol 70 ◽  
pp. 34-39 ◽  
Author(s):  
Hedda Malm ◽  
Anders Gamfeldt ◽  
Rickard Marcks von Würtemberg ◽  
Dan Lantz ◽  
Carl Asplund ◽  
...  

2007 ◽  
Vol 4 (2) ◽  
pp. 330-337
Author(s):  
Baghdad Science Journal

We explore the transform coefficients of fractal and exploit new method to improve the compression capabilities of these schemes. In most of the standard encoder/ decoder systems the quantization/ de-quantization managed as a separate step, here we introduce new way (method) to work (managed) simultaneously. Additional compression is achieved by this method with high image quality as you will see later.


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