請用此 Handle URI 來引用此文件:
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/64124
完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 陳中平(Chung-Ping Chen) | |
dc.contributor.author | Chih-Ming Wang | en |
dc.contributor.author | 王志民 | zh_TW |
dc.date.accessioned | 2021-06-16T17:31:02Z | - |
dc.date.available | 2013-08-28 | |
dc.date.copyright | 2012-08-28 | |
dc.date.issued | 2012 | |
dc.date.submitted | 2012-08-15 | |
dc.identifier.citation | [1] Craig H. Meyer, Adrian G. Laxer, David A. Rosissos, 'The Upper Limit of Human Smooth Pursuit Velocity,' Vision Res. Volume. 25. Issue 1. pp. 561-563., 1985.
[2] Robert M. Steinman, Alexander A. Skavenski, Richard V. Sansbury, 'Voluntary Control of Smooth Pursuit Velocity,' Vision Res., volume 9, pp. 1167-1171, 1969. [3] T. Jarvenpaa, 'Measuring Color Breakup of Stationary Image in Field-Sequential-Color,' Journal of the Society for Information Display, Volume 13, Issue 2, pp.139-144, 2005. [4] Ismo Miettinen, Risto Nasanen, and Jukka Hakkinen, 'Effects of Saccade Length and Target Luminance on the Refresh Frequency Threshold for the Visibility of Color Break-Up,' Journal od Display Technology, Volume. 4, Issue 1, 2008. [5] Chun-Ho Chen, Fang-Cheng Lin, Ya-Ting Hsu, Yi-Pai Huang, and Han-Ping D. Shieh, Fellow, IEEE, 'A Field Sequential Color LCD Based on Color Fields Arrangement for Color Breakup and Flicker Reduction,' JOURNAL OF DISPLAY TECHNOLOGY, Volume 5, Issue 1, 2009. [6] Erno H. A. Langendijk, Stefan Swinkels, Dan Eliav, Moshe Ben-Chorin, 'Suppression of color breakup in color-sequential multi-primary projection displays,' Journal of the Society for Information Display, Volume 14, Issue 3, pp. 325-329, 2006. [7] Yi-Pai Huang, Ke-Horng Chen, Chun-Ho Chen, Fang-Cheng Lin, and Han-Ping D. Shieh, 'Adaptive LC/BL Feedback Control in Field Sequential Color LCD Technique for Color Breakup Minimization,' JOURNAL OF DISPLAY TECHNOLOGY, Volume 4, Issue 3, 2008. [8] Hui-Chuan Cheng, Linghui Rao, and Shin-Tson Wu, Fellow, IEEE, “Color Breakup Suppression in Field-Sequential Five-Primary-Color LCDs,” JOURNAL OF DISPLAY TECHNOLOGY, Volume. 6, Issue 6, 2010. [9] Fang-Cheng Lin, Yuning Zhang, and Erno H. A. Langendijk, 'Color Breakup Suppression by Local Primary Desaturation in Field-Sequential Color LCDs,' JOURNAL OF DISPLAY TECHNOLOGY, Volume 7, Issue 2, 2011. [10] Johan Bergquist, Carl Wennstam, 'Field-Sequential-Colour Display with Adaptive Gamut,' SID Symposium Digest of Technical Papers, Volume 37, Issue 1, pp. 1594-1597, 2006. [11] Ding-Hsiang Pan, Shun-De Chang, Kuo-Jui Hu, Jih-Fon Huang, Yu-Sheng Tsai, 'A novel driving method and device to reduce color breakup in color-sequential displays,' Journal of the Society for Information Display, Volume 16, Issue 6, pp. 669-674, 2008. [12] Shao-Chang Huang, Chun-Li Chu, Ta-Liang Chiu, Ke-Horng Chen, 'Multi-color LC/BL algorithm in field-sequential-color LCD for color-breakup suppression,' Journal of the Society for Information Display, Volume 19, Issue 2, pp. 170-177, 2011. [13] C. Chao, D. R. Iskander, M. J. Collins, B. Davis, and M. Bennamoun, 'Dynamic Retinal Image Reconstruction of the Human Eye,' Brisbane, Australia, 1999. [14] Gaurav Sharma, Wencheng Wu, Edul N. Dalal, 'The CIEDE2000 Color-Difference Formula: Implementation Notes, Supplementary Test Data, and Mathematical Observations,' 2004. [15] Yuning Zhang, Erno H. A. Langendijk, Martin Hammer, and Karel Hinnen, 'A New Color Breakup Measure Based on Color Difference Between Fields and Contrast to the Surrounding,' JOURNAL OF DISPLAY TECHNOLOGY, Volume. 8, Issue 3, 2012. [16] Yu-Kuo Cheng and Han-Ping D. Shieh, Fellow, IEEE, 'Relative Contrast Sensitivity for Color Break-Up Evaluation in Field-Sequential-Color LCDs,' JOURNAL OF DISPLAY TECHNOLOGY, Volume 5, Issue 10, 2009. [17] Fang-Cheng Lin, Yi-Pai Huang, Ching-Ming Wei, and Han-Ping D. Shieh, 'Stencil-FSC Method for Color Break-Up Suppression and Low Power Consumption in Field-Sequential LCDs,' SID Symposium Digest of Technical Papers, Volume 39, Issue 1, pp. 1108-1111, 2008. [18] Fang-Cheng Lin, Yi-Pai Huang, Lin-Yao Liao, Cheng-Yu Liao, Han-Ping D. Shieh, Fellow, IEEE, Te-Mei Wang, and Szu-Che Yeh, 'Dynamic Backlight Gamma on High Dynamic Range LCD TVs,' JOURNAL OF DISPLAY TECHNOLOGY, Volume 4, Issue 2, 2008. [19] Fang-Cheng Lin, Yi-Pai Huang, Ching-Ming Wei, and Han-Ping D. Shieh, Fellow, IEEE, 'Color Filter-Less LCDs in Achieving High Contrast and Low Power Consumption by Stencil Field-Sequential-Color Method,' JOURNAL OF DISPLAY TECHNOLOGY, Volume 6, Issue 3, 2010. [20] Fang-Cheng Lin, Yi-Pai Huang, Chi-Chu Tsai, and Han-Ping D. Shieh, 'Color Breakup Reduction by 180Hz Stencil-FSC Method In Large-Sized Color Filter-Less LCD-TVs,' SID Symposium Digest of Technical Papers, Volume 40, Issue 1, pp. 235-238, 2009. [21] L. E. Spence, Elementary Linear Algebra, 2003. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/64124 | - |
dc.description.abstract | 場色序式液晶顯示器(FSC-LCDs)由於不需要使用彩色濾光片,相較於傳統的液晶顯示器擁有低成本、高透光率的優點,然而此種顯示器存在一重要問題-色分離現象。色分離現象成因乃人眼與影像之間有一相對速度,子畫面在視網膜上無法完全重疊,在邊緣會有顏色錯位的現象而經視覺暫留產生色分離,此現象嚴重影響場色序式液晶顯示器之影像品質,一般來說有三個方向來抑制該現象-增加畫面應答速率、減少顏色錯位部分色差、動態畫面補償。一般的場色序式液晶顯示器顯示速率大部分為180(三個子畫面)赫茲或240赫茲(四個子畫面)。
由於目前高速率的液晶難以發展與動態畫面補償容易造成過高的演算法與硬體成本,本論文採用上述第二種抑制色分離現象的方式(減少顏色錯位部分色差)並且分別在180赫茲與240赫茲的應用上提出了演算方式。針對減少顏色錯位部分色差,240赫茲的應用上採用了將能量集中在主色畫面的方法,使得該主色畫面的影像盡可能與欲顯示之圖片相近,然後再用另外三子畫面補足剩餘的顏色;而180赫茲上的應用則是兼顧了兩個面向以減少顏色錯位部分色差:(1)集中能量在主色畫面、(2)調整背光使得三子畫面擁有相近的背光。 實驗結果顯示,240赫茲的場色序式液晶顯示器色分離抑制之超快速最佳化演算法能夠比以往的方法集中能量,目前可達平均80%以上的能量集中度,並且在個人電腦上的執行速度小於0.1秒;而180赫茲的場色序液晶顯示器色分離抑制之超快速最佳化演算法則是能夠同時集中能量、減少三子畫面背光色差並且控制失真率平均在3%以下。 | zh_TW |
dc.description.abstract | FSC-LCDs (field-sequential-color LCDs) have the merits of low cost and high luminous efficiency due to color filter-less structure. However, FSC-LCDs are facing a serious artifact, color break-up (CBU), which degrades image quality. CBU is perceived when a relative velocity exists between the object on the screen and the observer’s eyes. Sub-frames are incapable of totally overlapping on retinas, and CBU occurs owing to photogene. There are three ways to suppress CBU, increasing frame rate, reduction of color difference and dynamic compensation. Most studies about CBU suppression in LCDs focus on 180Hz (3 fields) and 240Hz (4 fields) applications.
Because of the bottleneck of high-speed Liquid Crystal development and the unaffordable cost of dynamic compensation, this thesis chooses to do reduction of color difference and presents algorithm s for 180Hz and 240Hz application. The proposed 240Hz algorithm concentrates most energy on the first field and makes the first field to resemble the source image as much as possible. Then, the other three fields are residual frames that maintain the image fidelity. On the other hand, the proposed 180Hz algorithm not only concentrates most energy on the first field but also makes the back light of all 3 fields to be similar. Experiment results verify the average energy concentration ratio is over 80% for proposed 240Hz algorithm. And the execution speed is less 0.1 second per image on PC. For 180Hz, the average energy concentration ratio is over 55% and the average distortion is less then3%. | en |
dc.description.provenance | Made available in DSpace on 2021-06-16T17:31:02Z (GMT). No. of bitstreams: 1 ntu-101-R98943134-1.pdf: 4872741 bytes, checksum: 2d28a390ae9f7f33cef13ba4fe2d39ab (MD5) Previous issue date: 2012 | en |
dc.description.tableofcontents | 摘要 i
Abstract ii 目錄 iii 圖目錄 vi 表目錄 viii 第一章 導論 1 1.1 研究動機 1 1.2 背景知識 2 1.2.1 場色序式液晶體顯示器 2 1.2.2 色分離現象 3 1.2.3 色分離現象的量化標準 6 1.2.4 色軸空間與色度空間 7 1.2.5 區域調光(Local Dimming) 9 第二章 傳統色分離抑制演算法 11 2.1 WminRGB 11 2.2 Stencil-FSC 12 2.2.1 240赫茲 12 2.2.2 180赫茲 15 第三章 場色序液晶顯示器色分離抑制之超快速最佳化演算法 17 3.1 240赫茲-SVD [21] 17 3.1.1 流程架構 18 3.1.2 計算背光 19 3.1.3 透光率與其他子畫面背光 20 3.1.4 適應性背光調整 20 3.2 240赫茲-超快速最佳化演算法 22 3.2.1 基礎概念 22 3.2.2 快速計算tanα 24 3.2.3 3維的投影方式 25 3.2.4 計算目標軸能量 28 3.2.5 累加計算搜尋主軸 29 3.2.6 進一步提升速度 30 3.3 180赫茲-超快速最佳化演算法 31 3.3.1 基礎概念 31 3.3.2 能量圖 32 3.3.3 小面積三角形 33 3.3.4 演算法流程 36 第四章 實驗結果與討論 38 4.1 240赫茲 39 4.1.1 超快速最佳化演算法 39 4.1.2 超快速最佳化演算法:升速版 40 4.1.3 特殊案例比較 41 4.1.4 第一張子畫面比較-20個圖片樣本 42 4.2 180赫茲 45 4.2.1 180赫茲超快速最佳化演算法 45 4.2.2 樣本模擬結果 48 4.2.3 樣本模擬結果-區域調光 49 第五章 結論與展望 51 5.1 結論 51 5.2 展望 51 附錄 55 | |
dc.language.iso | zh-TW | |
dc.title | 場色序液晶顯示器色分離抑制之超快速最佳化演算法 | zh_TW |
dc.title | Ultra-Fast Optimization Algorithm for Color Breakup Suppression in FSC LCDs | en |
dc.type | Thesis | |
dc.date.schoolyear | 100-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 傅楸善(Chiou-Shann Fuh),洪士灝(Shih-Hao Hung),蘇榮智(Jung-Chih Su) | |
dc.subject.keyword | 場色序式液晶顯示器,色分離,240赫茲,180赫茲,執行速度,失真, | zh_TW |
dc.subject.keyword | FSC-LCD,CBU,240Hz,180Hz,Execution Speed,Distortion, | en |
dc.relation.page | 60 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2012-08-16 | |
dc.contributor.author-college | 電機資訊學院 | zh_TW |
dc.contributor.author-dept | 電子工程學研究所 | zh_TW |
顯示於系所單位: | 電子工程學研究所 |
文件中的檔案:
檔案 | 大小 | 格式 | |
---|---|---|---|
ntu-101-1.pdf 目前未授權公開取用 | 4.76 MB | Adobe PDF |
系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。