| Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
| IEICE-HIP, HI, VRPSY [detail] |
2023-02-22
14:45 |
Toyama |
(Primary: On-site, Secondary: Online) |
Change of color categories induced by color discrimination learning
Takehiro Nagai, Suzuha Horiuchi (Tokyo Tech) |
We examined the effects of perceptual learning of color discrimination on various color perception properties. The obser... [more] |
HI2023-3
pp.45-48 |
| HI, VRPSY, JSKE |
2022-11-25
16:15 |
Osaka |
Kindai Univ. |
Helmholtz-Kohlrausch effect in highlight regions enhances perceived glossiness on chromatic surfaces.
Kazuto Koizumi, Takehiro Nagai (Tokyo Tech) |
Glossiness can be increased by adding chromatic colors to the object images. However, it is unclear what mechanisms indu... [more] |
HI2022-30
pp.27-30 |
| HI, VRPSY, JSKE |
2022-11-25
16:35 |
Osaka |
Kindai Univ. |
Analysis of Image Statistics related to Lightness Perception of Facial Skin Using PS Statistics Noise
Chiho Kosone, Takehiro Nagai, Hirohiko Kaneko (Tokyo Tech), Naoki Watanabe, Ken Nishino, Natsuko Okiyama (Kao) |
Psychophysical reverse correlation can extract image features related to perception without prior hypotheses. However, e... [more] |
HI2022-31
pp.31-34 |
| HI, VRPSY |
2021-11-26
- 2021-11-27 |
Online |
|
Examination of gloss perception strategy by sub-band modulation inverse correlation method
Akifumi Saeki, Takehiro Nagai (Tokyo Tech) |
[more] |
HI2021-15
pp.21-24 |
| HI |
2021-03-05
10:45 |
Online |
|
Extraction of Image Factors for the Face Lightness Perception by Reverse Correlation Method with PS Statistics Noise
Chiho Kosone (Tokyo Tech), Ken Nishino, Natsuko Okiyama (Kao), Takehiro Nagai (Tokyo Tech) |
The psychophysical reverse correlation method is commonly used to find candidate image features contributing to face imp... [more] |
HI2021-2
pp.5-8 |
| HI, VRPSY |
2020-11-28
11:45 |
Online |
|
Strategy change in surface quality perception induced by short stimulus durations
Ryoto Seno (Yamagata Univ), Kenchi Hosokawa (Rits Univ), Tomonori Tashiro, Yasuki Yamauchi (Yamagata Univ), Takehiro Nagai (Tokyo Tech) |
[more] |
HI2020-78
pp.71-74 |
| HI, VRPSY |
2020-11-28
12:05 |
Online |
|
Sensitivity differences between color discrimination and supra-threshold color difference along hues.
Yuken Ito, Tomonori Tashiro, Yasuki Yamauchi (Yamagata Univ.), Takehiro Nagai (Tokyo Tech) |
We psychophysically measured sensitivities of color discrimination and supra-threshold color difference perception along... [more] |
HI2020-79
pp.75-78 |
| HI, IEICE-IE, IEICE-ITS, MMS, ME, AIT [detail] |
2020-02-27
11:10 |
Hokkaido |
Hokkaido Univ.
(Cancelled) |
Contrast sensitivity functions measured on luminance-variegated background
Misaki Hayasaka (Yamagata Univ.), Takehiro Nagai (Tokyo Tech), Tomoharu Sato (NIT, Ichinoseki College), Tomonori Tashiro, Yasuki Yamauchi (Yamagata Univ.), Ichiro Kuriki (Tohoku Univ.) |
In classical studies, contrast sensitivity functions (CSFs) were measured under full adaptation to a uniform background.... [more] |
MMS2020-27 HI2020-27 ME2020-55 AIT2020-27
pp.157-162 |
| HI, VRPSY |
2018-12-14
16:35 |
Fukuoka |
Kokura Campus, Univ. Kitakyushu |
Task-dependent perceptual learning in material perception
Takehiro Nagai (Tokyo Tech), Shuto Komatsu, Hiroaki Kiyokawa, Tomonori Tashiro, Yasuki Yamauchi (Yamagata Univ) |
The phenomenon that performing repeatedly a perceptual task increases its sensitivity is referred to as perceptual learn... [more] |
HI2018-67
pp.25-28 |
| HI, VRPSY |
2017-11-24
16:25 |
Ishikawa |
Kanazawa Institute of Technology |
The effect of L/M cone ratio in luminance detection
-- noise effect and contribution ratio --
Ryusuke Saito, Takehiro Nagai, Tomonori Tasiro, Yasuki Yamauchi (Yamagata Univ), Keiji Uchikawa (Kanagawa Univ) |
[more] |
HI2017-71
pp.17-20 |
| HI, VRPSY |
2017-11-24
16:45 |
Ishikawa |
Kanazawa Institute of Technology |
Display technology for high dynamic range images using a stochastic error compensation method
Tomoharu Sato (NIT, Ichinoseki College), Takehiro Nagai (Yamagata Univ.), Ichiro Kuriki (RIEC, Tohoku Univ.) |
[more] |
HI2017-72
pp.21-24 |
| IEICE-HIP, HI, CE [detail] |
2015-12-02
10:15 |
Miyagi |
Research Institute of Electrical Communication, Tohoku University |
[Invited Talk]
Temporal properties of material perception
Takehiro Nagai (Yamagata Univ.) |
[more] |
|
| HI, VRPSY |
2015-11-14
11:10 |
Kagoshima |
Korimoto Campus, Kagoshima Univ. |
Stimulus duration dependency of surface quality judgment
-- relationship to image features --
Naozumi Yamada, Yuki Kawashima, Yasuki Yamauchi, Takehiro Nagai (Yamagata Univ.) |
In this study, we measured effects of stimulus durations for surface quality judgment. In addition, we analyzed these re... [more] |
HI2015-75
pp.55-58 |
| HI |
2014-11-28
14:35 |
Kumamoto |
Kumamoto City International Center |
Temporal properties of material category recognition
-- relationship to surface quality features --
Takehiro Nagai (YAMAGATA Univ), Toshiki Matsushima, Kowa Koida, Yusuke Tani, Michiteru Kitazaki, Shigeki Nakauchi (Toyohashi Tech) |
We measured reaction times and effects of stimulus durations for material category discrimination tasks in psychophysica... [more] |
HI2014-63
pp.13-16 |
| HI |
2013-12-06
13:30 |
Okinawa |
Okinawa Industry Support Center |
Spatial Frequency Dependency on the Relationship between Skew and Gloss Perception
Ryo Nishijima (TUT), Takehiro Nagai (Yamagata Univ), Yusuke Tani, Kowa Koida, Michiteru Kitazaki, Shigeki Nakauchi (TUT) |
[more] |
HI2013-62
pp.1-4 |
| HI |
2013-12-06
13:55 |
Okinawa |
Okinawa Industry Support Center |
Image statistics contributing to surface quality rating
Toshiki Matsushima, Kowa Koida (TUT), Takehiro Nagai (Yamagata Univ), Yusuke Tani, Michiteru Kitazaki, Shigeki Nakauchi (TUT) |
[more] |
HI2013-63
pp.5-8 |
| HI |
2013-12-06
14:45 |
Okinawa |
Okinawa Industry Support Center |
Reverse correlation analysis of chromatic contrast perception based on chromatic mechanism models
Tomoharu Sato (TUT), Takehiro Nagai (Yamagata Univ), Shigeki Nakauchi (TUT) |
[more] |
HI2013-65
pp.13-16 |
| HI |
2013-12-07
11:15 |
Okinawa |
Okinawa Industry Support Center |
Characteristics of Luminance Uniformity Perception for Performance Evaluation of OLED
Yuki Kawashima, Yuki Nikaido, Yasuki Yamauchi, Masakatsu Hirasawa, Takehiro Nagai (Yamagata Univ.) |
One of the most important characteristics of organic electroluminescent (OLED) lighting is that it is a 2-dimensional su... [more] |
HI2013-74
pp.37-40 |
| HI [detail] |
2011-12-10
14:00 |
Okinawa |
Okinawa Industry Support Center |
Region extraction from an object image contributing to translucency perception with Classification Image technique
Yuki Ono, Takehiro Nagai, Michiteru Kitazaki, Kouwa Koida, Shigeki Nakauchi (TUT) |
We aimed to extract object image regions contributing to translucency perception using the Classification Image method w... [more] |
HI2011-90
pp.71-74 |
| HI, 3DMT |
2010-03-01
10:50 |
Tokyo |
Tokyo Univ. of Tech. |
Measuring dichromats' perceptual saturation using gamut expansion effect
Hisashi Komine, Takehiro Nagai, Shigeki Nakauchi (TUT) |
Gamut expansion effect (GE) of trichromats and dichromats were measured in our research. In our experiment, observers ma... [more] |
HI2010-52 3DIT2010-4
pp.9-10 |