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発行日: 2008/11/20
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佐藤 博啓, 川上 徹, 片桐 麦, 内田 龍男, 金森 義明, 羽根 一博
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In the field which needs to detect only the specific wavelength in an image, the image spectrum system which can change a measurement wavelength continuously is required. In this research, the system which can change a measurement wavelength continuously using GMRG filter was composed, and the image spectrum was performed.
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三野 正幸
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A solid state image sensor is composed of the periodic pixels which cause the aliasing. The randomly located pixels which are attained by varying the sizes are tried to reduce the periodic configuration. The spectra are calculated. The peak value and background level are obtained.
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佐藤 俊一, 田中 誠一, 紫村 智哉, 有田 真一, 大森 圭祐, 北川 真, 京本 忠男, 井上 理, 伊藤 寛, 齋藤 栄
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In this paper, we show the relationship between high-resolution image generation and object distance by multiple cameras system. We also propose an off-axis optical system by a liquid crystal lens.
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豊田 善隆, 久野 徹也, 石田 晃三, 杉浦 博明
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It is known that some objects, e.g. natural leaves and clothes made in synthetic fibers, have worse color reproduction because those objects have high reflectance in near-infrared region. This paper reports the color reproduction of such exceptional objects after optimizing matrix coefficient.
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本田 悠葵, 瀧口 吉郎, 難波 正和, 渡部 俊久, 江上 典文, 宮 健太, 中村 和仁, 谷口 昌照
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We propose new operation methods that reduce lag for a field emitter array - high-gain avalanche rushing amorphous photoconductor (FEA-HARP) image sensor.
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恒川 裕輝, 中川 雅史, 森井 久史, 松原 勝見, 山下 進, 根尾 陽一郎, 青木 徹, 三村 秀典, 長尾 昌善, 吉田 知也, 金 ...
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We have proposed and fabricated the X-ray image sensor which consists of a CdTe diode and a field emitter arrays (FEA). This paper describes the attempt to realize a photon-counting type FEA-CdTe X-ray imaging device.
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若林 正樹, 山崎 正裕, 中熊 恭一, 木崎 雅治, 佐藤 恵理奈, 梅原 義章
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A mobile phone can record a lot of 1-segment TV programs. In order to watch them efficiently and actively, a prototype of the application that a user could select a desired closed caption was developed.
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今井 繁, 秋山 卓見, 坂口 広樹, 花田 武彦, 松原 雅美, 三浦 紳, 赤津 慎二
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The Net-enabled DTV usage model proposed in this study is suited for people with no IT-literacy background assuming that at least one family member or friend is able to configure the DTV from a Web browser interface.
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木村 衣里, 梶原 雄太, 小熊 孝弘, 山本 学
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In order to clarify the influence of the wavefront aberration in holographic memory, we studied the simulation method of recording/reproduction process including wave front aberration.
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金安 麻友美, 大内 康敬, 山本 学
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This paper describes a phase code multiplexed ROM type holographic memory using computer generated hologram(CGH).
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山田 祐一郎
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Recently, replacement from CRTs to FPDs has been accelerated by promotion of the digital broadcasting. Among FPDs, LCDs are the most promising display device tosatisfy the image quality for television use. In order to secure the superior position of the market, image quality such as contrast ratio, response time and viewing angle has been improved, while large size LCDs are fabricated efficiently using a generation 8^<th> LCD line. In this paper, technologies for new generation LC-TV will be presented.
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窪田 悟, 小野 石樹, 小林 雄二, 岸本 和之, 山根 康邦, 五十嵐 陽一, 芳賀 秀一, 中枝 武弘
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Preferred luminance of an LCD television screen was measured by the method of adjustment as a function of the angular screen size, subject's age and average luminance level of a displayed image. The results showed that the preferred luminance of LCD screens for young subjects corresponds to the following formula: logPL=-0.23logSA-0.22logAL+2.9. This is where PL is the preferred luminance (cd/m^2) of LCD television screens, SA is the angular screen size (deg) and AL is the average luminance level (%) of the displayed image.
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鈴木 将高, 窪田 悟, 岸本 和之, 山根 康邦, 五十嵐 陽一, 芳賀 秀一, 中枝 武弘
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Preferred luminance of an LCD television screen was measured by the method of adjustment as a function of the average luminance level of a displayed image, the screen illuminance and angular screen size. The results showed that the preferred luminance of LCD television screens corresponds to the following formula: logPL=0.27logE-0.221ogSA-0.32logAL+2.4. This is where PL is the preferred luminance(cd/m^2) of LCD television screens,E is the screen illuminance (lx), SA is the angular screen size (deg) and AL is the average luminance level (%) of the displayed image.
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馬野 由美, 大木 亮子, 窪田 悟, 岸本 和之, 山根 康邦, 五十嵐 陽一, 芳賀 秀一, 中枝 武弘
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Two experiments were carried out to investigate the psychological effects of HDTV images as a function of angular screen size and the preferred viewing distance for LCD televisions. Psychological effects depended on the angular screen size, regardless of the display size. The preferred viewing distance is around 5H for 32 in.; 3.8H for 65in.
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小林 雄二, 小野 石樹, 窪田 悟, 岸本 和之, 山根 康邦, 五十嵐 陽一, 芳賀 秀一, 中枝 武弘
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We measured the preferred viewing distance for HDTV LCDs as a function of display size and display luminance. Although display luminance can influence the preferred viewing distance, display size was found to be the dominant parameter.
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野中 亮助, 馬場 雅裕, 伊藤 剛
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For local backlight dimming technology, we revealed relationships between light profile of segments and picture degradations by performing a simulation. Based on the result, we optimized the light profile and developed a WDRLCD prototype. This prototype can enhance contrast of an LCD to over 4,800x while minimizing the picture degradations.
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岡垣 覚, 新倉 栄二, 横山 英二, 道盛 厚司, 杉浦 博明
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We have developed 2D laser scanning actuator for LCD backlight. This LCD system is capable of displaying wide color gamut, less motion blur and high contrast.
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尾崎 進之介, 徳田 裕一郎, 大橋 剛介, 下平 美文
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In this study, color-matching functions are corrected to reduce the gap between colorimetric values and human perception of color. Color-matching functions are approximated by Gaussian functions and then are optimized using genetic algorithm to optimize the parameters of the Gaussian functions. Experimental results show perceptual color matching was improved.
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久保 俊明, 山中 聡, 南 浩次, 杉浦 博明
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Recently, noise is highly visible by making the TV high luminance. In this paper we study of block noise reduction method in chrominance signals.
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加藤 大典, 本山 靖, 石井 啓二, 薄井 武順, 平野 芳邦, 村上 由紀夫
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We have reproduced video content on an ultra-high-resolution PDP with an SrCaO protective layer using a sustain pulse of 150V, which is 50V lower than the 200V required in the case of a panel with an MgO protective layer, and obtained 1.7 times the luminous efficiency.
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佐藤 弘人, 藤崎 好英, 武井 達哉, 山本 敏裕, 藤掛 英夫, 時任 静士, 栗田 泰市郎
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In order to realize flexible displays, we have been developing flexible display devices using ferroelectric liquid crystal (LC) and polymer fibers which can be driven by organic TFTs (OTFT) with Ta_2O_5 gate insulator. In this study, a good mobility of 0.1-0.2cm^2/VS was obtained in a 5 inch OTFT array. A fabricated 5 inch QQVGA flexible LC display showed color images by the field sequential color technique.
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田上 智也, 武田 匡史, 堀江 瞬, 長尾 昌善, 吉田 知也, 金丸 正剛, 根尾 陽一郎, 青木 徹, 三村 秀典
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The emission current significantly decreases under the strong focused condition for a conventional double-gated field emitter. We fabricated the quad-gated field emitter. The fabricated quad-gated field emitter can focus the electron beam without significant degradation of the emission current in the strong focused condition.
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尾形 敦, 柴田 豊, 深澤 友良
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Nhen it constitutes SFN on ISDB-T transmission network, it is necessary to do the delay adjustment between SFN Relay Station. We develop the TS/IF/RF delay measuring instrument for terrestrial digital broadcasting. This measuring instrument makes the operation easier doing the delay adjustment between SFN Relay Station.
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横畑 和典, 竹内 知明, 渋谷 一彦, 今村 浩一郎, 尾崎 雄一, 坂山 芳憲, 若林 弘隆
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We have researched and developed a channel equalizer to compensate signal degradation caused by echoes outside the guard interval of an OFDM signals. This paper describes the result of field experiments of a prototype equalizer. In this experiment, trial equalizer was used at two point of Inabu area in Nagoya prefecture where is site proposed for receiving point of ISDB-T relay station.
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大亦 寿之, 藤澤 俊之, 藤津 智, 今泉 浩幸
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We propose an autonomous recognition system for interference to TV reception. TV sets share unusual reception data andrecognize a cause of interference by using peer-to-peer networks. This system can make viewers to recognize a cause of interference and make broadcasters or TV manufacturers to distribute solution of the interference to TV sets efficiently.
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清水 丈晴, 上村 和宏, 市ヶ谷 敦郎, 青木 勝典
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We study to transmit the Super Hi-vision(SHV) signal which is expected as the next generation broadcasting technique. In this report, we described the research results of designing of the network configuration to transmit the SHV signal with high quality and reliability, and monitoring the status of the transmission equipments through IP network.
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成清 善一, 岡野 正寛, 土田 健一, 渋谷 一彦, 酒井 隆史, 古田 浩之
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We proposed a method of One-Seg combined re-transmission in which firstly the corresponding segments from two or more received broadcasted waves are extracted, then combined them together, and finally re-transmitted it. This paper describes the results of field experiment with this system in a gorge. These results show that there is little difference between the received median MER of each segment.
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若林 慧, 松田 一朗, 伊東 晋
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This paper proposes an efficient lossless re-encoding scheme for MPEG-1 video. In this scheme, adaptive arithmetic coding is used for further compression of DCT coefficients and motion vectors extracted from the original video data. Moreover, a block-adaptive intra prediction technique is employed to exploit inter-block correlations of the DCT coefficients.
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川喜田 裕之, 西本 友成, 石川 清彦, 今泉 浩幸
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We have adopted a reconfigurable system as a receiver of Downloadable Conditional Access System(DCAS). This paper shows selecting a suitable logic implementation of a decryption for DCAS improves resistance to a power analysis attack.
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武藤 一利, 津田 貴生, 柳澤 斉, 奥田 誠, 井上 誠喜, 野呂 賢司
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We have developed a highly accurate image composition system using a mobile robot camera. This system can make synthesis images not only in any position but also while the camera moves. In this system, we adopt a new camera position calibration method. The origin point in the studio that serves a reference for the CG positions is captured by the robot camera, and the camera position is calibrated from parameters such as pan and tilt angle.
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高橋 正樹, 藤井 真人, 柴田 正啓, 八木 伸行
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We developed a ball trajectory visualization system which can be used in live bowling broadcast programs. The system extracts a ball region from a fixed camera and draws a trajectory on the camera image in real-time. We used the system in a live bowling program broadcast by NHK.
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西山 裕之, 伊藤 加寿子, 秋本 乾太郎, 小和瀬 達也
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File based new recording media are getting used in broadcast stations and will take the place of VCR in the near future. Using this, we verified this workflow in the Beijing Olympic this summer.
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君山 博之, 岡田 敦, 水町 勝利
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We performed an experiment to store video content to NTT's XMS system over gigabit ethernet and deliver it to editing rooms. The result suggests that we need to make transferring time and trans-coding time shorter and also need to add more convenient meta data.
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上村 明, 菊地 秀彦, 山内 英夫, 大槻 喜洋
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Today, file based broadcast system is widely considered. To optimize such a system, transmission system is also required to be file based. In this paper, MXF File transmission systems using SNG/FPU systems are considered.
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宮内 聡, 牧野 鉄雄, 佐治 佳一, 甲斐 創, 久保 和則, 出口 勝尚
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We describe our development of extremely-compact digital FPU with built-in ultra low-delay MPEG-2 HD codec. It is very useful for wireless camera in the live broadcast of golf and other sports.
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牧野 鉄雄, 佐治 佳一, 甲斐 創, 鈴木 英樹, 荻窪 力也
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In case of receiving signal from a helicopter or moving system we usually use an automatic tracking system. But in digital FPU transmission there are few system exist. This paper describes our development of automatic tracking system for digital FPU transmission. This system is compact and improves of receiving performance over 10dB which is very useful for receiving signal from a helicopter especially for sports and news programs.
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柳瀬 健嗣, 水谷 照一
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太田 弘毅, 秋田 米生
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We are studying measurement methods for OFDM signals in SFN which some areas will receive same signals from more than one transmitter. We are discus about the test results of proposal method for ISDB-T signals in SFN
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込山 伸二
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There is an expectation for domestic small gap-fillers for DTTB system to be introduced in Japan and Europe. In this paper, an indoor propagation analysis that takes into account relatively small objects(furniture) is shown
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太田 弘毅
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Single frequency network (SFN) relay station for gap filler have a coupling between the transmitting antenna and the receiving antenna. We study about the results of the basic measurement of effects of antennas position.
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石井 数馬, 降旗 隆, 田村 徹
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画像処理やコンピューターグラフィックス処理を含むwindowsプログラミングの開発環境を構築するためにWindows/CGプログラミング用のプラットフォームの開発検討を行った。
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下江 優太, 濱本 和彦, 小河 幸次, 野須 潔
原稿種別: 本文
セッションID: 6-2
発行日: 2008/11/20
公開日: 2017/06/05
会議録・要旨集
フリー
A research on the applicability of nonverbal communications on a virtual space by using avatar and the pictogram.
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村山 勇介, 山内 幸治
原稿種別: 本文
セッションID: 6-3
発行日: 2008/11/20
公開日: 2017/06/05
会議録・要旨集
フリー
In this paper, we complement the real images equipped with miniature buildings with computer graphics techniques and perform improvement of the reality.. We reproduce snowfall events that are the effect of the natural phenomenon with particle system in three dimensional space.
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