Evaluation and discrimination method of "mura" in liquid crystal displays by just noticeable difference observation

Yumi Mori, Ryoji Yoshitake, Tohru Tamura, Toru Yoshizawa, Satoshi Tsuji

研究成果: Conference contribution

15 引用 (Scopus)

抄録

Based on sensory analysis, quantitative evaluation method of the luminance non-uniformity, or "mura", of liquid crystal displays (LCDs) was investigated. We conducted a perception test by using pseudo mura and this approach led to "just noticeable differences" according to the various sizes of muras, intending to clarify the detection method and create an automated mura inspection process. The quality level of a mura can be described as a function between the mura area and the contrast, using the minimum perceivable contrast, or the "just noticeable difference" (JND) contrast, at that mura size. We developed the detection method by using a hardware system based on a commercially available CCD camera and a PC and ensured that the mura regions were distinguished from the background area even with the JND contrast. This paper describes the research in human perception and the approach to adapt the intrinsic rule of sensory analysis to the quantitative evaluation of mura.

元の言語English
ホスト出版物のタイトルProceedings of SPIE - The International Society for Optical Engineering
編集者T. Yoshizawa
ページ715-722
ページ数8
4902
DOI
出版物ステータスPublished - 2002
外部発表Yes
イベントOptomechatronic Systems III - Stuttgart, Germany
継続期間: 2002 11 122002 11 14

Other

OtherOptomechatronic Systems III
Germany
Stuttgart
期間02/11/1202/11/14

Fingerprint

Liquid crystal displays
discrimination
liquid crystals
evaluation
CCD cameras
Luminance
Inspection
Hardware
luminance
nonuniformity
quantitative analysis
inspection
hardware
Sensory analysis

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

これを引用

Mori, Y., Yoshitake, R., Tamura, T., Yoshizawa, T., & Tsuji, S. (2002). Evaluation and discrimination method of "mura" in liquid crystal displays by just noticeable difference observation. : T. Yoshizawa (版), Proceedings of SPIE - The International Society for Optical Engineering (巻 4902, pp. 715-722) https://doi.org/10.1117/12.467711

Evaluation and discrimination method of "mura" in liquid crystal displays by just noticeable difference observation. / Mori, Yumi; Yoshitake, Ryoji; Tamura, Tohru; Yoshizawa, Toru; Tsuji, Satoshi.

Proceedings of SPIE - The International Society for Optical Engineering. 版 / T. Yoshizawa. 巻 4902 2002. p. 715-722.

研究成果: Conference contribution

Mori, Y, Yoshitake, R, Tamura, T, Yoshizawa, T & Tsuji, S 2002, Evaluation and discrimination method of "mura" in liquid crystal displays by just noticeable difference observation. : T Yoshizawa (版), Proceedings of SPIE - The International Society for Optical Engineering. 巻. 4902, pp. 715-722, Optomechatronic Systems III, Stuttgart, Germany, 02/11/12. https://doi.org/10.1117/12.467711
Mori Y, Yoshitake R, Tamura T, Yoshizawa T, Tsuji S. Evaluation and discrimination method of "mura" in liquid crystal displays by just noticeable difference observation. : Yoshizawa T, 編集者, Proceedings of SPIE - The International Society for Optical Engineering. 巻 4902. 2002. p. 715-722 https://doi.org/10.1117/12.467711
Mori, Yumi ; Yoshitake, Ryoji ; Tamura, Tohru ; Yoshizawa, Toru ; Tsuji, Satoshi. / Evaluation and discrimination method of "mura" in liquid crystal displays by just noticeable difference observation. Proceedings of SPIE - The International Society for Optical Engineering. 編集者 / T. Yoshizawa. 巻 4902 2002. pp. 715-722
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