机构

• 长春光学精密机械与物... [3]
• 西安光学精密机械研究... [1]

采集方式

• OAI收割 [4]

内容类型

• 会议论文 [3]
• 期刊论文 [1]

发表日期

• 2024 [1]
• 2012 [1]
• 2009 [1]
• 2007 [1]

学科主题

筛选

浏览/检索结果: 共4条，第1-4条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Display method for high dynamic range infrared image based on gradient domain guided image filter 期刊论文  OAI收割 OPTICAL ENGINEERING, 2024, 卷号: 63, 期号: 1 作者:  Zhang, Feifei;  Dai, Yimian;  Chen, Yaohong;  Peng, Xuedian;  Zhu, Xiongyong   |  收藏  |  浏览/下载：13/0  |  提交时间：2024/06/07 display methods  infrared images  gradient domain guided image filter  high dynamic range compression  detail enhancement   A brightness and color correction method of LED display based on CCD camera (EI CONFERENCE) 会议论文  OAI收割 2012 International Applied Mechanics, MechatronicsAutomation and System Simulation Meeting, AMMASS 2012, June 24, 2012 - June 26, 2012, Hangzhou, China 作者:  Wang R. 收藏  |  浏览/下载：23/0  |  提交时间：2013/03/25 The correction methods of LED displays are aiming to address the uniform issues which includes brightness aspect and color aspect. The correction method use a 33 correction coefficients matrix to reshape the pulse width of each LED. To calculate the correction coefficients  a linear system is established  which includes a color CCD and a LED display. And a correction algorithm is introduced based on the color CCD. This algorithm describes the relationships of the main color components of a LED  when the gray level of a LED is increasing or decreasing  the three main color components would change according to the correction coefficients. The results shows that the correction based on this algorithm improved the performance of LED displays. (2012) Trans Tech Publications  Switzerland.   FPD grayscale control based on sub-space division (EI CONFERENCE) 会议论文  OAI收割 2009 International Conference on Information Engineering and Computer Science, ICIECS 2009, December 19, 2009 - December 20, 2009, Wuhan, China Chang F.; Wang R.-G.; Zheng X.-F.; Ding T.-F. 收藏  |  浏览/下载：24/0  |  提交时间：2013/03/25 This document introduces flat panel display grayscale control based on Sub-space division to overcome the defects that two common grayscale control methods have. The proposed method controls the loss of luminance in 10.16%  and experiment results indicate that human eyes feeling flicker has been reduced to solve the problem of vision limitation  in some degree. 2009 IEEE.   Novel fast measurement method of twist angle and optical retardation of liquid crystal display (EI CONFERENCE) 会议论文  OAI收割 Asia Display 2007, AD'07, March 12, 2007 - March 16, 2007, Shanghai, China Huang X.; Lu Y.-T.; Kong X.-J.; Jing H.; Fu G.-Z.; Jin H. 收藏  |  浏览/下载：15/0  |  提交时间：2013/03/25 A novel method is proposed to measure twist angle and optical retardation of liquid crystal display in this paper. The new method which is one of single-wavelength methods has three characteristics  introducing a method of measuring the total intensity ratio of the transmitted light to eliminate the influence of absorption by the polarizer  using circularly and homogeneously aligned LC cell (CH-LC) as a unique polarization-converting device  analyzer  using variable sector diaphragm and photodetector to detect the total intensity of transmitted light whose original polarization direction is continuously changed from 0 to arbitrary angle  CH-LC  liquid crystal display and so on. The twist angle () and optical retardation (nd) can be derived by using Jones matrix analysis and a curve fitting where and nd are fitting parameters. Experiment proved the results are accurate  the process of operation is fast  the devices are economical.