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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.
05/16/2024 9:00 AM 05/16/2024 9:20 AM America/Los_Angeles A Novel On-Line, Fast Color Correction by Machine Learning 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. San Jose McEnery Convention Center LL21AB Ching-Chun Lin, Feng-Ting Pai, Yung-Cheng Tsai, Wan-Nung Tsung, Yao-Jen Chang
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.  
05/16/2024 9:20 AM 05/16/2024 9:40 AM America/Los_Angeles Analyzing Observer Metamerism Characteristics Based on The Peak Wavelengths of Primary Colors 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.   San Jose McEnery Convention Center LL21AB Junwoo Jang, Yan Jin, Jang Jin Yoo
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.
05/16/2024 9:40 AM 05/16/2024 10:00 AM America/Los_Angeles Impact of Calibration Sources on Accuracy of Chromaticity Measurements of LED-Based Displays 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. San Jose McEnery Convention Center LL21AB Roland Schanz, Fabian Fischer, Tobias Steinel
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.
05/16/2024 10:00 AM 05/16/2024 10:20 AM America/Los_Angeles Dynamic MTF Measurements of Gaming Monitors 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. San Jose McEnery Convention Center LL21AB Johan Bergquist