映像情報メディア学会誌
Online ISSN : 1881-6908
Print ISSN : 1342-6907
ISSN-L : 1342-6907
65 巻 , 10 号
選択された号の論文の22件中1~22を表示しています
ふぉーかす
小特集
撮像-画像処理-表示系の連携による高画質映像システム
1. 高画質映像システム構築における撮像-画像処理-表示系の連携
2. 撮像と表示系の連携による高画質化
3. 撮像系と画像処理の連鎖による高画質化
技術解説
講 座
誰にでもわかる3D(第10回)
メディアアート紀行(第19回)
知っておきたいキーワード(第69回)
私の研究開発ツール(第52回)
大学発のベンチャービジネス
ニュース
論文・研究速報
論文小特集 ~ディスプレイIDW '10を中心に~
小特集論文
  • Keisuke Tomono, Hajime Katsuyama, Akira Tomono
    2011 年 65 巻 10 号 p. 1411-1419
    発行日: 2011/10/01
    公開日: 2011/12/20
    ジャーナル フリー
    We propose a new method in which scents are emitted through the display screen in the direction of the viewer to enhance the reality effect of the visual images. A thin LED display panel filled with tiny pores was made for this experiment and an air control system with a blower was placed behind the screen. We experimentally proved that the direction of airflow could be controlled and scents could properly travel through the pores to the front side of the screen aimed at the viewer. The effectiveness of the scents and the psychological effects were evaluated by the subjects' biological responses and answers to a questionnaire. By analyzing their biological responses, more significant changes in skin conductance were detected when the advertisements were presented with visuals and scents than with visuals alone. Therefore, we had a lot of good reasons to objectively evaluate the psychological effects of visuals with scents.
  • 桃井 芳晴, 関根 真弘, 最首 達夫, 山内 康晋
    2011 年 65 巻 10 号 p. 1420-1425
    発行日: 2011/10/01
    公開日: 2011/12/20
    ジャーナル フリー
    We introduce a prototype of a rotatable ray scan system for flatbed autostereoscopic display systems. The main feature of the new system is the rotatable scanning unit for capturing objects at a depression angle. The scanning unit of the new system can be easily rotated with the case. Both depth correction and vertical perspective correction are necessary for flatbed 3-D image synthesis. Since the rays acquired by this system are very high density, an adaptive 3-D image can be synthesized for flatbed autostereoscopic displays.
  • 池谷 優太, 大橋 剛介, 下平 美文, 柴田 裕一, 芹澤 啓之
    2011 年 65 巻 10 号 p. 1426-1431
    発行日: 2011/10/01
    公開日: 2011/12/20
    ジャーナル フリー
    The purity discrimination threshold of monochromatic light and mixed light was investigated in the mesopic condition. Monochromatic light and mixed light were first resolved into their components of pure color light of dominant wavelength and white light. By Using the definition of colorimetric purity, the luminance ratios of the pure color light to white light were obtained. The pure color light component in mixed light was calculated Using the luminance ratios. The purity discrimination threshold of monochromatic and mixed light is expressed by the ratio of the pure color component to the white light of a reference field. Therefore, this purity discrimination threshold can be expressed in a unified manner.
  • 鈴木 紀子, 矢野 澄男
    2011 年 65 巻 10 号 p. 1432-1439
    発行日: 2011/10/01
    公開日: 2011/12/20
    ジャーナル フリー
    We provide a subjective and objective evaluation of the viewability of high-definition images. First, we examined the preferred viewing distance for images of different sizes, including monoscopic and stereoscopic ones. Second, we measured the eye movements of participants on comparing the preferred with the non-preferred viewing distance. The results indicate two points. First, for larger images (greater than 70 in.), including either stereoscopic or monoscopic images, the preferred viewing distance is 2.0 to 2.5 times the absolute display height. Second, eye movement may determine a person's preferred viewing distances. These results could provide a guideline for the design of the visual environment, including larger, stereoscopic display systems with high-definition.
  • Akio Takada, Koji Sasaki, Eiji Takahashi, Naoki Hanashima, Takatoshi Y ...
    2011 年 65 巻 10 号 p. 1440-1445
    発行日: 2011/10/01
    公開日: 2011/12/20
    ジャーナル フリー
    We have developed wire-grid polarizers with low reflectivity in the visible region. The polarizers consist of a bilayered structure of an absorptive layer and a (transparent) gap layer on sub-wavelength pitch gratings made of aluminum. The bilayered structure functions as a highly effective antireflection coating for wire-grid with high reflectance. In order to realize these multilayered wire-grid, the glancing angle deposition technique was used to deposit the absorptive layer just above the Al wire-grid covered with the SiO2 gap layer. Both low reflectance and high transmittance in the desired wavelength range were achieved by optimizing the thickness of each layer.
論文
  • 佐藤 周平, 土橋 宜典, 山本 強, 安生 健一
    2011 年 65 巻 10 号 p. 1446-1451
    発行日: 2011/10/01
    公開日: 2011/12/20
    ジャーナル フリー
    Recently, many methods for simulating natural phenomena on the basis of fluid simulation have been proposed. A method for simulating explosions was also proposed, but the shapes of the simulated explosions depend on many simulation parameters. Therefore, creating the desired shape for an explosion as specified by the user is difficult. In this paper, we propose a method for controlling explosion simulations in order to form the desired shapes. Our method optimizes the initial intensity distribution of an explosion and controls the simulation to minimize the difference between the target shape and the shape of the simulated explosion. We use a predictive approach to control the explosion simulation accurately. Using the proposed method, animations of explosions controlled into specified shapes can be generated.
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