Results 201 to 210 of about 5,855,050 (241)

Evaluation of LCD local‐dimming‐backlight system

Journal of the Society for Information Display, 2010
Abstract— Local‐dimming backlight techniques can significantly improve the static contrast and power consumption of LCD panels. Several local‐dimming backlight systems have been previously reported. However, there is currently no comprehensive description regarding the evaluation of such systems.
Hanfeng Chen, Tae Hyeun Ha, Jun Ho Sung, Hyung Rae Kim, Baik Hee Han   +4 more
openaire   +1 more source

Effective small DIM target detection by local connectedness constraint

2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2014
The main drawback of conventional filtering based methods for small dim target (SDT) detection is they could not guarantee sufficient suppression ability towards trivial high frequency component which belongs to background, such as strong corners and edges.
Keren Fu, Kai Xie, Chen Gong 0002, Irene Y. H. Gu, Jie Yang 0002   +4 more
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An optical feedback system for local dimming backlight with RGB LEDs

IEEE Transactions on Consumer Electronics, 2009
One of the major issues plaguing RGB LED backlight is color shift. This phenomenon is due to the characteristic changes of each Red, Green, and Blue LEDs as the time and temperature variation. To compensate this variation, many researchers are proposed color control method for the stable color management.
Tae-Wook Lee, Jae-Ho Lee, Chang-Gone Kim, Sin-Ho Kang   +3 more
openaire   +1 more source

Multi-Block Gray Statistics Local Dimming Algorithm

Applied Mechanics and Materials, 2013
Multi-block gray statistics local dimming algorithm is proposed to automatically control the brightness of the backlight for reducing energy consumption and enhancing the image quality. The large blocks are used to determine the value of backlight matrix and small blocks are to determine the image block brightness.
Lei Zhang, Guo Qiang Lv, Fen Liu, Xi Tiao Zhang   +3 more
openaire   +1 more source

A novel local dimming algorithm for RGB-LED backlight

SPIE Proceedings, 2009
A large size RGB LED backlight unit and its local dimming algorithm are presented in this paper. The LED backlight unit and the LCD panel are controlled synchronously to enhance image contrast and improve power efficacy. Based on the image content, the backlight intensity is locally dimmed, and pixel values are compensated according to the backlight
Wei Huang, Zhong-Liang Jin, Zheng-Gen Zhong, Yu Liu, Duan Liu, Hai Ming, Qin-Ying Chou, Feng Li   +7 more
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50.3: Proposai of Evaluation Method for Local‐Dimming Backlights

SID Symposium Digest of Technical Papers, 2010
Abstract A local‐dimming control is one of the advanced ways for backlighting an LCD. It balances less power consumption with higher contrast than other ordinary backlighting systems by independently controlling each luminance of backlights according to pictures. On the other hand, a new defect arises; that is, all the backlight units
Hideki Ichioka, Katsuya Otoi, Kohji Fujiwara, Katsuteru Hashimoto, Hirofumi Murakami, Tomohiko Yamamoto   +5 more
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64.4: Smart Algorithms for Local Dimming LED Backlight

SID Symposium Digest of Technical Papers, 2008
Abstract To reduce power consumption and improve image quality including contrast ratio and color gamut, LED backlight units (BLUs) consisting of many small blocks in 2‐dimensional space are implemented. Either white‐gray‐level luminance or color is controlled by the local dimming LED BLU.
Dong‐Min Yeo, Yong‐hoon Kwon, Eui‐Jeong Kang, Se‐Ki Park, Byungchoon Yang, Gicherl Kim, Taeseok Jang   +6 more
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24.3: Evaluation of LCD Backlight Local Dimming System

SID Symposium Digest of Technical Papers, 2009
Abstract Backlight local dimming technique can improve the static contrast and reduce power consumption of LCDs significantly. Several backlight local dimming systems have been reported in previous literatures. However, there is still no comprehensive description about the evaluation of various backlight local dimming systems.
Hanfeng Chen, Tae Hyeun Ha, Jun Ho Sung, Hyung Rae Kim, Baik Hee Han   +4 more
openaire   +1 more source

A new class of very efficient algorithms for local dimming

Optimization and Engineering, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Krause, Michael, Riplinger, Martin, Louis, Alfred K., Xu, Chihao   +3 more
openaire   +2 more sources

DETECTION AND SUB-PIXEL LOCALIZATION OF DIM POINT OBJECTS

2023
Detection of dim point objects plays an important role in many imaging applications such as early warning systems, surveillance, astronomy, and microscopy. In satellite imaging, natural phenomena, such as clouds, can confound object detection methods. We propose an object detection method that uses spatial, spectral, and temporal information to reject ...
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