Session and scheduling information are listed below. Select a session from the list and press "Go" to view the abstracts for that session.
|
Session
58
: Color and Spatial Measurements |
Display Measurement
|
Thursday, May 16 / 09:00 AM - 10:20 AM / San Jose Convention Center, LL21AB
Chair:
Stephen Atwood, Consultant, Webster, MA US
Co-Chair:
Jaejoong Kwon, Samsung Display, Yongin, South Korea
58.1 - A Novel On-Line, Fast Color Correction by Machine Learning (9:00 AM - 9:20 AM)
-
Tzu-Lung Pan, Paul Chao, Duc Huy Nguyen
Taiwan National Yang Ming Chiao Tung University Hsinchu Taiwan Roc
-
Ching-Chun Lin, Feng-Ting Pai, Yung-Cheng Tsai, Wan-Nung Tsung, Yao-Jen Chang
Novatek Microelectronics Corporation Hsinchu Taiwan Roc
-
A new efficient color correction method, utilizing neural network models, is proposed for evaluating the performance of OLED panels in production. It achieves accurate and rapid color calibration utilizing transfer learning with a limited dataset. It can also create color conversion matrices for AI-driven color correction.
58.2 - Analyzing Observer Metamerism Characteristics Based on The Peak Wavelengths of Primary Colors (9:20 AM - 9:40 AM)
-
Junwoo Jang, Yan Jin, Jang Jin Yoo
LG Display Seoul South Korea
-
A new IEC standard has recently been published to evaluate observer metamerism (OM) characteristics, one of the challenges of wide-color-gamut displays. This paper evaluates OM characteristics based on primary peak wavelength with the new IEC standard, using a hypothetical display with a color gamut from BT.709 to BT.2020 and beyond.
58.3 - Impact of Calibration Sources on Accuracy of Chromaticity Measurements of LED-Based Displays (9:40 AM - 10:00 AM)
-
Roland Schanz, Fabian Fischer, Tobias Steinel
Instrument Systems GmbH Munich Germany
-
When narrow bandwidth emission sources such as uLEDs are used to create full-color displays, large measurement errors can occur with colorimeters calibrated against standard light sources. Experiments confirm that different calibrations of an imaging light-measurement device provide different levels of color accuracy depending on the similarity of calibration source to the display-under test's (DUT's) spectral distribution.
58.4 Late-News Paper: Dynamic MTF Measurements of Gaming Monitors (10:00 AM - 10:20 AM)
-
Kenichiro Masaoka
NHK Science and Technology Research Laboratories/NHK Foundation Tokyo Japan
-
Johan Bergquist
Consultant Tokyo Japan
-
Recent gaming monitors claim a high refresh rate of 240 Hz or higher with short response time of 1 ms or less. From these temporal metrics, however, it is usually difficult to understand their true spatiotemporal resolution, which depends on the velocity of the displayed images. In this study, a new measurement method of dynamic modulation transfer function (MTF) is demonstrated to compare two gaming monitors. A single line is scrolled, and a small region of the screen is captured with a high-speed camera during one display refresh period. The dynamic MTF results characterize how the spatiotemporal resolution characteristics depend on the scroll speed, refresh rate, and response time.
|
Session
66
: Advancements in Display Standards |
Display Measurement
|
Thursday, May 16 / 10:40 AM - 12:00 PM / San Jose Convention Center, LL21AB
Chair:
Thomas Fiske, Intuitive Surgical, Sunnyvale, CA US
Co-Chair:
Jaejoong Kwon, Samsung Display, Yongin, South Korea
66.1 - Invited Paper: Display Performance Standards: Clearing up OEM and Consumer Confusion (10:40 AM - 11:00 AM)
-
Roland Wooster
Intel Corporation Folsom CA US
-
Dale Stolitzka
Samsung Electronics Co., Ltd. San Jose CA US
-
The PC display market has evolved rapidly in recent years, with new technologies and capabilities like high dynamic range (HDR), motion blur reduction, and ultra-high variable refresh rates being introduced at a rapid rate. However, when it comes to choosing a display, consumers are often at a disadvantage. How can they better understand the capabilities of each display, and trust the specs provided by the manufacturer? For display OEMs, having consistent, measurable display performance parameters around which to qualify and promote their products is also beneficial to product development and commercialization. For the past six years, the Video Electronics Standards Association (VESA) has released multiple front-of-screen performance standards to help consumers and OEMs meet these needs. This paper will review the compliance test specifications for several of these standards, including the newest update to VESA’s HDR standard, DisplayHDR v1.2, which will be launched in the first half of 2024.
66.2 - Invited Paper: Standardization Efforts and Measurement Procedures by Displayforum (DFF) (11:00 AM - 11:20 AM)
-
Donald Schaffer
Dexerials Europe B.V. Frankfurt am Main Germany
-
Karlheinz Blankenbach
Pforzheim University, Display Lab Pforzheim Germany
-
Displays in cars is one of the hottest topics in the automotive industry and highest (image) quality is a must. OEM-specific specs are not efficient. The Displayforum (DFF) innovated optical specifications and requirements by involving experts along the value chain and dedicated methods for automotive displays.
66.3 - Invited Paper: Standardizations of Ergonomics for Head-Mounted Displays (HMDs) (11:20 AM - 11:40 AM)
-
Hiroyasu Ujike
Tokyo Information Design Professional University (TID) & National Institute of Advanced Industrial Science and Technology Tokyo Japan
-
Kei Hyodo
National Institute of Advanced Industrial Science and Technology & Yuasa System Co., Ltd. Okayama Japan
-
Mitsunori Tada, Hiroshi Watanabe
National Institute of Advanced Industrial Science and Technology Tsukuba Japan
-
The technical committee dealing with ergonomics in the International Organization for Standardization (ISO) has been developing international standards for display ergonomics from the perspective of human-system interaction. The recent main topics in ISO/TC 159/SC 4/WG 2 and /WG 12, which address display ergonomics, are ergonomics of head-mounted displays (HMDs) as devices for realizing XR or cross-reality, which has attracted attention in recent years. This paper overviews the major issues related to visual comfortability and image safety when using HMDs, and reports on the key points for standardization to reduce VR sickness and comfortable viewing of 3D images.
66.4 - Invited Paper: Recent Updated Activities of the IEC TC 110: Following Expanding Electronic Display Applications (11:40 AM - 12:00 PM)
-
Kei Hyodo
Yuasa System Co., Ltd. & Yamagata University Okayama-shi Japan
-
Xiaolin Yan
TCL Technology Group Co., Ltd. Shenzhen China
-
Yoshihiko Shibahara
Fuji Film Co., Ltd. Tokyo Japan
-
Shin-ichi Uehara
AGC Inc. Tokyo Japan
-
With the burgeoning expansion of digital technologies, electronic displays are becoming increasingly prevalent in our daily lives. These displays are not limited to stationary ones like traditional TVs but have also found their way into mobile devices such as smartphones and wristwatches. To facilitate this significant shift, it is evident that substantial engineering efforts are necessary. However, equally crucial is the establishment of proper methods for measurement and evaluation. Without the development of such evaluation methods, technological progress would be hindered.
|
Session
74
: Display Reflectance |
Display Measurement
|
Thursday, May 16 / 01:30 PM - 3:00 PM / San Jose Convention Center, LL21AB
Chair:
Stephen Atwood, Consultant, Webster, MA US
Co-Chair:
Thomas Fiske, Intuitive Surgical, Sunnyvale, CA US
74.1 - Display Reflectance Measurements Finally Made Simple, Comprehensive, and Affordable (1:30 PM - 1:50 PM)
-
Michael Becker
Display-Messtechnik & Systeme Rottenburg am Neckar Germany
-
Analysis of the point-spread function (PSF) yields the directional variations of scattered light with high resolution in the vicinity of the specular direction and at reduced but sufficient resolution — also at off-specular directions. This approach is applied to both identification and separation of mirror, haze, and Lambertian reflection components.
74.2 - From BRDF to Gloss: Comparing Specular Reflectance Measurements (1:50 PM - 2:10 PM)
-
Dirk Hertel
E Ink Corporation Billerica MA US
-
John Penczek
University of Colorado & NIST Boulder CO US
-
Jake Shin
Princeton University Princeton NJ US
-
The specular reflectance of a surface is an important factor that determines the gloss and glare observed from a display. This study compares several different methods for measuring specular reflectance and demonstrates their accuracy relative to a goniometric BRDF measurement.
74.3 - Regular Reflectance and Transmittance Measured by the Annulus Source Method (2:10 PM - 2:30 PM)
-
John Penczek
University of Colorado, Boulder & NIST Boulder CO US
-
The annulus source method can extract the true regular reflectance component from a reflective display in the presence of multiple scattering components. This study extends this work by demonstrating the capability of this method to measure the regular reflectance and transmittance of emissive, transparent, and augmented-reality displays.
74.4 - Research of FMLOC Visibility Phenomena Based on Huygens Point-Spread Function (2:30 PM - 2:50 PM)
-
Yamei Gao, Shiming Shi, Xiao Wang, Jiali Wang, Qian Li, Wei Tang, Jianbang Huang, Zhangmin Wu, Kezhi Liu, Yaqiu Li, Lin Li, Lin Zhang, Changbo Liu
BOE Technology Group Co., Ltd. Beijing China
-
The visibility phenomenon caused by the metal mesh of FMLOC under point-source illumination is analyzed. A simulation based on the point-spread function (PSF) of Huygens integral mode provides results with background filtration algorithm. When there is one graphic unit and no gap spacing between single-cycle graphic units, the phenomena are significantly improved.
74.5 Late-News Paper: Quality Assessment Toward Reflective Pattern Based on Diffraction Appearance (2:50 PM - 3:00 PM)
-
Soyoung Kwon, Wooyoung Cheon, Sumi Lee, Youngjun Seo, Jaejoong Kwon, Yongjo Kim
Samsung Display Yongin South Korea
-
While polarizer-free (Pol-less) OLED displays increase the efficiency of the panels by lowering the thickness, there comes an issue of the screen quality drop due to diffraction. The authors investigate the phenomena and invent a novel model for diffraction, since the color-difference-based evaluation alone has limitations in responding to customer needs in various environments and reflecting situations in which actual users embrace the screen quality. The main spatial features of the diffraction appearance are classified into the size and complexity of the pattern, and each factor is quantified through a specialized model. Diffraction features can be automatically calculated as numerical values from the invented model reflecting perceptual levels, which acts as a 'ruler' to achieve a good 'grade' of image quality in the product development stage. In this paper, the authors demonstrate what plays vital roles in diffraction appearance on Pol-less displays and how to evaluate the diffraction in representative values.
|
Session
78
: Color and HDR Metrology |
Display Systems
; Display Measurement
|
Thursday, May 16 / 03:10 PM - 4:50 PM / San Jose Convention Center, LL21EF
Chair:
Brian Berkeley, Highlight Display, LLC, Saratoga, CA US
Co-Chair:
Thomas Fiske, Intuitive Surgical, Sunnyvale, CA US
78.1 - Invited Paper: Gamut Rings Color Scope for Use with Wide-Gamut Display Systems (3:10 PM - 3:30 PM)
-
Kenichiro Masaoka
NHK Science & Technology Research Laboratories/NHK Foundation Tokyo Japan
-
A new tool based on gamut rings can monitor the lightness, chroma, and hue distributions of the pixel colors of input images in a single 2D diagram. The perceptually intuitive visualization facilitates more efficient and effective color grading, thereby broadening the market's understanding of the benefits of wide-gamut displays.
78.2 - Invited Paper: Distinguished Paper: Assessing Color Capability with Gamut Ring Intersection (3:30 PM - 3:50 PM)
-
Euan Smith
42 Technology St Ives United Kingdom
-
The gamut ring intersection diagram extends the gamut ring diagram by representing how the color gamut of a test device covers a reference color gamut. The means of calculating and rendering a gamut ring intersection diagram will be provided, and advantages demonstrated through analysis of measured and synthetic display gamuts.
78.3 - A Tristimulus Electro-Optical Model Describing Interactions of an RGB Backlight Unit and an LC Panel (3:50 PM - 4:10 PM)
-
Ramazan Ayasli, Maria Cirillo, Chihao Xu
Saarland University Saarbruecken Germany
-
This paper presents a color model to describe the interaction of a variable color, locally dimmed RGB backlight with an LC panel. The model extends 1D luminance to 3D tristimulus. Input variables include RGB-LED duty ratios in addition to the RGB subpixel gray values. LC pixel XYZ coordinate values can be calculated and a method for parameter extraction is shown.
78.4 - Invited Paper: Defining and Characterizing Programmatic Image Sequences for Multi-Disciplinary Applications (4:10 PM - 4:50 PM)
-
Florian Friedrich
FF Pictures GmbH Oberschleissheim Germany
-
Timo Kunkel
Dolby Labs, Inc. San Francisco CA US
-
This paper introduces a framework for defining and characterizing content, specifically tailored for reproducible testing in video processing, energy consumption, and encoding tests. The approach presented integrates advanced HDR display technologies and provides a comprehensive analysis with practical examples. This paper marks the public release of a set of these sequences.
|
Session
82
: NED Measurements |
Display Measurement
|
Thursday, May 16 / 03:10 PM - 4:10 PM / San Jose Convention Center, LL21AB
Chair:
Udo Krueger, TechnoTeam Bildverarbeitung GmbH, Ilmenau, Germany
Co-Chair:
Ingo Rotscholl, TechnoTeam Bildverarbeitung GmbH, Ilmenau, Thuringia, Germany
82.1 - Distinguished Paper: Geometric Distortion on Video See-Through Head-Mounted Displays (3:10 PM - 3:30 PM)
-
Chumin Zhao, Ryan Beams
U.S. Food and Drug Administration Silver Spring MD US
-
The authors present the experimental setup and metrology for video see-through head-mounted display geometric distortion measurement. Physical geometric distortion is compared to the distortion of digital content on a VST HMD. They investigate the impacts of camera misalignment and depth distance on VST geometric distortion with angular-based distortion correction.
82.2 - Rapid Eyebox Measurements for Wide Field-of-View Near-Eye Displays (3:30 PM - 3:50 PM)
-
John Penczek
University of Colorado, Boulder Boulder CO US
-
Richard Austin, Johanthan Lipscomb, Osman Akcakir
Gamma Scientific San Diego CA US
-
Measuring the eyebox of a near-eye display is complex and time-consuming. The Draper eyebox method offers an opportunity to simplify the process and dramatically reduce the measurement time. This study compares the Draper method with the standard goniometric method for both pupil and eye rotation, and discusses the correlations.
82.3 - Optical Quality Requirements for Accurate MTF/CTF Measurements on Near-Eye Displays (3:50 PM - 4:10 PM)
-
Daniel Winters, Aiko Ruprecht, Patrik Erichsen, Mohit Yadav, Jan-Hinrich Eggers, Benjamin Stauss
TRIOPTICS GmbH Wedel Germany
-
Traditional modulation and contrast transfer functions (MTF/CTF) evaluate real images of a flat display. For near-eye displays (NEDs), projected virtual images with amplitude and phase information are analyzed. The authors show that test systems with wavefront aberrations can introduce substantial measurement errors that cannot be corrected by software or using calibration.
|
Session
89
: Visibility in Automotive and Transparent Displays |
Digital Signage (Indoor and Outdoor Displays)
; Display Measurement
; Automotive/Vehicular Displays and HMI Technologies
|
Friday, May 17 / 09:00 AM - 10:00 AM / San Jose Convention Center, LL20D
Chair:
Thomas Fiske, Intuitive Surgical, Sunnyvale, CA US
Co-Chair:
Karlheinz Blankenbach, Pforzheim University, Pforzheim, Germany
89.1 - Method for Characterizing Display Washout Performance (9:00 AM - 9:20 AM)
-
Shenping Li, Wageesha Senaratne, Byung Yun Joo, Jeff Touschner, William Wood, Karl Koch, Shandon Hart, Ellen Kosik Williams, James West
Corning Incorporated Corning NY US
-
The characteristic of “washout” is a side effect of the use of an anti-glare (AG) cover plate on a display under ambient illumination. A measurement method and metric are developed to quantitatively characterize the impact of the effect on image quality, utilizing MTF techniques. These can be practical tools for the development of antiglare (AG) cover plates.
89.2 - An Evaluation Index for See-Through Image Quality on Transparent MicroLED Displays (9:20 AM - 9:40 AM)
-
YuTang Tsai, JiaLong Wu, MinChun Huang, KunCheng Tien, YenWen Fang
AUO Corporation Hsinchu Taiwan Roc
-
This paper investigates see-through image quality on transparent microLED displays, a field lacking a universal assessment metric. Using image analysis and comparing common optical metrics, the study finds CW-SSIM to be highly sensitive and visually accurate. This positions CW-SSIM as a potential universal metric for transparent display image quality evaluation.
89.3 - Invited Paper: An Investigation of Quantitative Measure of See-Through Image Quality for Transparent Displays (9:40 AM - 10:00 AM)
-
Hyeok-Jun Kwon, Sang-Bin Lee, Kyongho Lim, Dong-Woo Kang, WoongGi Jun, SooYoung Yoon
LG Display Seoul South Korea
-
A study is conducted on the linearity between purity and perceptual blurriness on several samples of transparent OLED displays. Seven OLED samples with purity values between 47.7% and 82.3% are used with 10 observers. Results show that purity is highly correlated with perceptual blurriness. Purity of 93% or higher implies visual performance similar to ordinary glass.
Poster Session :
Display Measurement Posters
Thursday, May 16, 2024, 5:00 PM – 8:00 PM / San Jose Convention Center, Room 220A
P.114 - A Method for Visualizing and Quantifying Color Differences Using Relative Hue and Relative Color Concentration
-
Han-Yan Sun, Xiao-Hu Li, Wei-Tao Chen, Xiao-Peng Cui, Jian-Guo Xing
Beijing BOE Display Technology Co., Ltd. Beijing China
-
An innovative method is proposed for visualizing and quantifying color difference using relative hue and color saturation. The new method avoids issues with chromaticity-based methods and subjective assessment. The relationship between color difference and panel characteristics for two a-Si displays is presented.
P.115 - Optimized Method for Sparkle Contrast Measurement of Anti-Glare Covered Vehicle Display
-
Li Song, Jiangen Pan, Peipei Li
Everfine Corporation Hangzhou China
-
Liangcai Cao
Tsinghua University Beijing China
-
The authors present an optimized method for evaluating the visual sparkle contrast of vehicle displays with anti-glare treatments and compare the results to standard test methods. By assessing the sparkle contrast changes under different ambient light conditions and different viewing angle conditions, they provide test recommendations for the sparkle evaluation of vehicle displays.
P.116 - A Demoiré Method for Display Test Using CNN Model with Pixel Shift
-
Hao Tang, Wuxing Zhang, Gang Xu
Jingce Electronic USA San Jose CA US
-
A deep-learning-based demoiré algorithm is applied to display test images to remove moiré patterns. The ground truth is generated by a pixel shift (PS) method implemented by shifting the display panels, instead of the camera sensor, a low-cost alternative to expensive PS cameras for mass production.
P.117 - A Demura Method for OLED under White Image with Monochrome Camera
-
Hao Tang, Cody Yu, Pengcheng Xu, Gang Xu
Jingce Electronic USA San Jose CA US
-
A demura method using a high-resolution monochrome camera is proposed for OLED panels, enabling a single data capture for white images at each gray level (GL). The authors' method minimizes takt time for low GL images because of its efficient utilization of light compared to demura methods using a Bayer pattern color camera.
P.119 - Evaluating Seamlessness: A Quantitative Index for Transparent Tiled MicroLED Displays
-
YuTang Tsai, MinChun Huang, ChangHung Li, ShengYuan Chiou, KunCheng Tien, YenWen Fang, MingHsien Lee, MingLiang Shao
AUO Corporation Hsinchu Taiwan Roc
-
This study uses the validated structural similarity (SSIM) index method for accurately evaluating the quality of splicing seams in tiled transparent microLED displays. This method, which avoids subjective human observation, enables precise feedback in the production process and establishes common objective measurement standards for defining splicing seam quality.
P.243 Late-News Poster: Polarization State Maps Measurement of Optical Components Using a Fourier Optic-Based Conoscope
-
Véronique Collomb-Patton, Thierry Leroux
ELDIM SA. Hérouville St Clair France
-
Polarization states out of SiO2 waveplates and LYOT depolarizers are measured using a Fourier angular system. The authors show that the measurements perfectly match the theory of birefringence at any incident angle. The equipment can furthermore be used to obtained a cartography of the polarization states out of VR optical systems.