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Camera-Based Color Calibration Method for Multiple Flat-Panel Displays Using Smartphone 基于摄像头的智能手机多平板显示器颜色校准方法
Journal of Display Technology Pub Date : 2016-10-11 DOI: 10.1109/JDT.2016.2616345
June-Young Jung;Seung-Wook Kim;Seung Park;Byeong-Doo Choi;Sung-Jea Ko
{"title":"Camera-Based Color Calibration Method for Multiple Flat-Panel Displays Using Smartphone","authors":"June-Young Jung;Seung-Wook Kim;Seung Park;Byeong-Doo Choi;Sung-Jea Ko","doi":"10.1109/JDT.2016.2616345","DOIUrl":"https://doi.org/10.1109/JDT.2016.2616345","url":null,"abstract":"Multiple flat-panel displays have been widely used as business and consumer electronic equipment. Although stereo or multiple display units are of the same brand and model, users often experience temporary visual fatigue due to the color differences between flat-panel displays. Therefore, color calibration between multiple display units displayed at the same time has been receiving attention from display manufacturers. In this paper, a camera-based color calibration method for multiple flat-panel displays that uses a portable smartphone camera is proposed. The color calibration algorithm used in the proposed method consists of three parts: geometric registration based on a chessboard detector, camera parameter optimization based on the distortion model of camera's optical system and environmental factors, and color matching for fast calibration. Experimental tests proved the practicality and the reliable calibration performance of the proposed color calibration method for the aftermarket.","PeriodicalId":15588,"journal":{"name":"Journal of Display Technology","volume":"12 12","pages":"1777-1784"},"PeriodicalIF":0.0,"publicationDate":"2016-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/JDT.2016.2616345","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50305761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Pixel Circuit With Parallel Driving Scheme for Compensating Luminance Variation Based on a-IGZO TFT for AMOLED Displays 基于a-IGZO TFT补偿AMOLED显示器亮度变化的并行驱动像素电路
Journal of Display Technology Pub Date : 2016-10-11 DOI: 10.1109/JDT.2016.2616507
Chih-Lung Lin;Po-Chun Lai;Po-Cheng Lai;Po-Syun Chen;Wan-Lin Wu
{"title":"Pixel Circuit With Parallel Driving Scheme for Compensating Luminance Variation Based on a-IGZO TFT for AMOLED Displays","authors":"Chih-Lung Lin;Po-Chun Lai;Po-Cheng Lai;Po-Syun Chen;Wan-Lin Wu","doi":"10.1109/JDT.2016.2616507","DOIUrl":"https://doi.org/10.1109/JDT.2016.2616507","url":null,"abstract":"This work proposes a new pixel structure based on amorphous indium-gallium-zinc-oxide thin-film transistors (a-IGZO TFTs) and a parallel addressing scheme for high-resolution active-matrix organic light-emitting diode (AMOLED) displays. The proposed circuit compensates for the nonuniformity of luminance that is caused by shifts in the threshold voltage (V\u0000<sub>TH</sub>\u0000) and mobility of driving TFTs. Measurement results verify that the parallel addressing scheme successfully extends the compensation time and accurately detects the V\u0000<sub>TH</sub>\u0000 of the driving TFT. Moreover, the proposed circuit reduces the variations of OLED luminance from more than 83% to less than 13% when the V\u0000<sub>TH</sub>\u0000 and mobility of driving TFT shifts by 1 V and 30%, respectively, and the V\u0000<sub>TH</sub>\u0000 of OLED varies from 0 to 0.9 V.","PeriodicalId":15588,"journal":{"name":"Journal of Display Technology","volume":"12 12","pages":"1681-1687"},"PeriodicalIF":0.0,"publicationDate":"2016-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/JDT.2016.2616507","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50306337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 17
Depth Estimation in Integral Imaging Based on a Maximum Voting Strategy 基于最大投票策略的积分成像深度估计
Journal of Display Technology Pub Date : 2016-10-10 DOI: 10.1109/JDT.2016.2615565
Adolfo Martínez-Usó;Pedro Latorre-Carmona;Jose M. Sotoca;Filiberto Pla;Bahram Javidi
{"title":"Depth Estimation in Integral Imaging Based on a Maximum Voting Strategy","authors":"Adolfo Martínez-Usó;Pedro Latorre-Carmona;Jose M. Sotoca;Filiberto Pla;Bahram Javidi","doi":"10.1109/JDT.2016.2615565","DOIUrl":"https://doi.org/10.1109/JDT.2016.2615565","url":null,"abstract":"An approach that uses the scene information acquired by means of a three-dimensional (3D) synthetic aperture integral imaging system is presented. This method generates a depth map of the scene through a voting strategy. In particular, we consider the information given by each camera of the array for each pixel, and also the local information in the neighbourhood of that pixel. The proposed method obtains consistent results for any type of object surfaces as well as very sharp boundaries. In addition, we also contribute in this paper with a repository of a set of synthetic integral images generated by 3DS Max where the so-called ground truth (real-true depth map) is available. This resource can be used as a benchmark to test any Integral Imaging based range estimation method.","PeriodicalId":15588,"journal":{"name":"Journal of Display Technology","volume":"12 12","pages":"1715-1723"},"PeriodicalIF":0.0,"publicationDate":"2016-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/JDT.2016.2615565","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50306340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 14
Impact of Long-Term Stress on the Light Output of a WRGB AMOLED Display 长期应力对WRGB AMOLED显示器光输出的影响
Journal of Display Technology Pub Date : 2016-10-10 DOI: 10.1109/JDT.2016.2615871
Frédérique Chesterman;Bastian Piepers;Tom Kimpe;Patrick De Visschere;Kristiaan Neyts
{"title":"Impact of Long-Term Stress on the Light Output of a WRGB AMOLED Display","authors":"Frédérique Chesterman;Bastian Piepers;Tom Kimpe;Patrick De Visschere;Kristiaan Neyts","doi":"10.1109/JDT.2016.2615871","DOIUrl":"https://doi.org/10.1109/JDT.2016.2615871","url":null,"abstract":"This paper describes how long-term use impacts the light output of a commercial 55” WRGB AMOLED display with InGaZnO TFT backplane. This covers effects which are known by the terms “aging”, “image-sticking,” and “burn-in.” The focus is on three different observations: permanent change in light output as a function of time, permanent screen burn-in, and permanent shift in color point. From this work it can be concluded that state-of-the-art OLED displays still suffer from light output instability under prolonged stress. The results suggest that the permanent change in light output can be explained by the combination of three different phenomena: a decrease in efficiency of the OLEDs as a function of time for active subpixels, a positive threshold voltage shift of the driving transistor for active subpixels, and a negative threshold voltage shift of the driving transistor for inactive subpixels, if they are illuminated and/or kept at high temperature. To our knowledge, this is the first work that describes and quantifies the permanent change in light output of a commercial WRGB OLED panel with InGaZnO TFT backplane. It sheds light on which effects occur and can be a valuable tool, both in the design and optimization of OLED panels and in the determining the circumstances under which this technology may be applicable.","PeriodicalId":15588,"journal":{"name":"Journal of Display Technology","volume":"12 12","pages":"1672-1680"},"PeriodicalIF":0.0,"publicationDate":"2016-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/JDT.2016.2615871","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50306336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Novel Pixel Circuit With Compensation for Normally-Off/On a-IGZO TFTs and OLED Luminance Degradation 一种补偿常关/常开a-IGZO TFT和OLED亮度退化的新型像素电路
Journal of Display Technology Pub Date : 2016-10-06 DOI: 10.1109/JDT.2016.2615658
Chih-Lung Lin;Po-Syun Chen;Po-Chun Lai;Ting-Ching Chu;Ming-Xun Wang;Chia-Lun Lee
{"title":"Novel Pixel Circuit With Compensation for Normally-Off/On a-IGZO TFTs and OLED Luminance Degradation","authors":"Chih-Lung Lin;Po-Syun Chen;Po-Chun Lai;Ting-Ching Chu;Ming-Xun Wang;Chia-Lun Lee","doi":"10.1109/JDT.2016.2615658","DOIUrl":"https://doi.org/10.1109/JDT.2016.2615658","url":null,"abstract":"This letter presents a new pixel circuit reaching simultaneous compensation for a threshold voltage (V\u0000<sub>TH</sub>\u0000) shift of normally-off and normally- on a-IGZO TFTs, as well as luminance drop of an OLED device for ultrahigh-definition active-matrix organic light-emitting diode displays. Simulation results demonstrate the successful detection of a 1 V shift of threshold voltage despite normally-off and normally-on characteristics by the novel source-follower structure. Furthermore, the interdependence between luminance and threshold voltage shift of the OLED device is measured. Based on the simulations using the measured interdependence, the luminance drop caused by OLED aging is suppressed below 5% at different data voltages.","PeriodicalId":15588,"journal":{"name":"Journal of Display Technology","volume":"12 12","pages":"1664-1667"},"PeriodicalIF":0.0,"publicationDate":"2016-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/JDT.2016.2615658","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50306334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Multi-SLM Color Holographic 3D Display Based on RGB Spatial Filter 基于RGB空间滤波器的多SLM彩色全息3D显示器
Journal of Display Technology Pub Date : 2016-10-06 DOI: 10.1109/JDT.2016.2615595
Weronika Zaperty;Tomasz Kozacki;Małgorzata Kujawińska
{"title":"Multi-SLM Color Holographic 3D Display Based on RGB Spatial Filter","authors":"Weronika Zaperty;Tomasz Kozacki;Małgorzata Kujawińska","doi":"10.1109/JDT.2016.2615595","DOIUrl":"https://doi.org/10.1109/JDT.2016.2615595","url":null,"abstract":"A novel approach for color holographic 3D displays employing several liquid crystal based spatial light modulators (SLM) is presented. A multicolor reconstruction is introduced into circular monochrome display architecture with horizontal-only-parallax through the use of space-division method (SDM). In the SDM active area of an SLM is divided into three regions generating the RGB component images by using color spatial filter composed of a three glass stripes that are attached to the front of each SLM. Relatively low complexity level of SDM enables to upgrade a horizontal-only-parallax monochrome display to a color one at the expense of image resolution. There is no reduction of remaining key performance parameters, i.e., image dimensions, refresh frame rate, and viewing angle are preserved with no increase of SLM number. In this paper, practical aspects of color imaging implementation, including filter mask design and hardware calibration, are considered. Developed procedures focus on major three effects, i.e., spectral calibration of response of highly dispersive SLM phase, spatial calibration of filter mask and numerical alignment of RGB imaging volumes. The presented experimental results of static and dynamic 3D reconstructions of computer generated holograms validate the performance of calibration procedures and the high color imaging quality of the display.","PeriodicalId":15588,"journal":{"name":"Journal of Display Technology","volume":"12 12","pages":"1724-1731"},"PeriodicalIF":0.0,"publicationDate":"2016-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/JDT.2016.2615595","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50306341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 20
A Flexible FOV Capsule Endoscope Design Based on Compound Lens 基于复合透镜的柔性FOV胶囊内窥镜设计
Journal of Display Technology Pub Date : 2016-10-06 DOI: 10.1109/JDT.2016.2615681
Yung-Chieh Tseng;Pin Han;Hsun-Ching Hsu;Cheng-Mu Tsai
{"title":"A Flexible FOV Capsule Endoscope Design Based on Compound Lens","authors":"Yung-Chieh Tseng;Pin Han;Hsun-Ching Hsu;Cheng-Mu Tsai","doi":"10.1109/JDT.2016.2615681","DOIUrl":"https://doi.org/10.1109/JDT.2016.2615681","url":null,"abstract":"This paper proposes a capsule endoscope (CE) with a flexible large field of view (FOV) that imitates the compound eyes of insects, like those of a fly. Thirty-one ball lenses are demonstrated to cover 175° viewing area for constructing the compound lens. The ball lens used in the CE is responsible for 40° view to form the image on a curve image plane. A fiber array is applied to fit the curve image plane to improve the field curvature aberration and deliver the image into an image sensor. Such a compound lens can share image aberrations into the multiple ball lenses, keep high relative illumination (RI), and make the adjustment of the FOV possible. With a 45 × 45 fiber array, a ray tracing is simulated to verify that the proposed CE is feasible. The results show that the CE can capture 175° viewing area though the compound lens with ball-lens-based design.","PeriodicalId":15588,"journal":{"name":"Journal of Display Technology","volume":"12 12","pages":"1798-1804"},"PeriodicalIF":0.0,"publicationDate":"2016-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/JDT.2016.2615681","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50305762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Compensation Algorithm for Misrecognition Caused by Hard Pressure Touch in Plastic Cover Capacitive Touch Screen Panels 塑料盖电容式触摸屏硬压触摸误识别的补偿算法
Journal of Display Technology Pub Date : 2016-10-06 DOI: 10.1109/JDT.2016.2615678
Jaewook Kim;Hyeokjin Lim;Sanghyun Han;Yunho Jung;Seongjoo Lee
{"title":"Compensation Algorithm for Misrecognition Caused by Hard Pressure Touch in Plastic Cover Capacitive Touch Screen Panels","authors":"Jaewook Kim;Hyeokjin Lim;Sanghyun Han;Yunho Jung;Seongjoo Lee","doi":"10.1109/JDT.2016.2615678","DOIUrl":"https://doi.org/10.1109/JDT.2016.2615678","url":null,"abstract":"When a plastic cover is used on a touch screen panel, IoT (internet of things) equipment, a medium-large size touch screen and a curved surface touch screen can have availability of production. Accordingly, it allows a 75% cost reduction compared to adopting a glass cover. Cost reduction also enables many users to experience products including touch screen panels with lower prices. However, when applying pressure on a hard plastic cover, it takes more time to restore to the original state from the bent state compared to a glass cover touch screen. This aspect gets heavier depending on the intention of the pressure. In this paper, a correction algorithm that compensates for this defect is suggested. The retouching time can be reduced to one-sixth compared to not applying the proposed algorithm.","PeriodicalId":15588,"journal":{"name":"Journal of Display Technology","volume":"12 12","pages":"1623-1628"},"PeriodicalIF":0.0,"publicationDate":"2016-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/JDT.2016.2615678","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50306561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Journal of Display Technology publication information 《显示技术杂志》出版信息
Journal of Display Technology Pub Date : 2016-10-01 DOI: 10.1109/JDT.2016.2626165
{"title":"Journal of Display Technology publication information","authors":"","doi":"10.1109/JDT.2016.2626165","DOIUrl":"https://doi.org/10.1109/JDT.2016.2626165","url":null,"abstract":"Provides a listing of the editorial board, current staff, committee members and society officers.","PeriodicalId":15588,"journal":{"name":"Journal of Display Technology","volume":"12 10","pages":"C2-C2"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/JDT.2016.2626165","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50355060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
IEEE Journal of Electron Devices Society IEEE电子器件学会杂志
Journal of Display Technology Pub Date : 2016-10-01 DOI: 10.1109/JDT.2017.2649638
{"title":"IEEE Journal of Electron Devices Society","authors":"","doi":"10.1109/JDT.2017.2649638","DOIUrl":"https://doi.org/10.1109/JDT.2017.2649638","url":null,"abstract":"Prospective authors are requested to submit new, unpublished manuscripts for inclusion in the upcoming event described in this call for papers.","PeriodicalId":15588,"journal":{"name":"Journal of Display Technology","volume":"12 10","pages":"1235-1235"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/JDT.2017.2649638","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50355080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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