ITE Technical Report
Online ISSN : 2424-1970
Print ISSN : 1342-6893
ISSN-L : 1342-6893
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25.3
Displaying 1-10 of 10 articles from this issue
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  • [title in Japanese]
    Article type: Cover
    Pages Cover1-
    Published: January 26, 2001
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.25.3.0_Cover1
    CONFERENCE PROCEEDINGS FREE ACCESS
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  • [title in Japanese]
    Article type: Index
    Pages Toc1-
    Published: January 26, 2001
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.25.3.0_Toc1
    CONFERENCE PROCEEDINGS FREE ACCESS
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  • An Artificial Retina LSI with Projection Function and its Applications
    Eiichi Funatsu, Soichiro Kuramochi, Yoji Nagafuchi, Hroshi Kage, Narum ...
    Article type: Article
    Session ID: IPU2001-1
    Published: January 26, 2001
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.25.3.0_1
    CONFERENCE PROCEEDINGS FREE ACCESS
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    An artificial retina (AR) LSI with high accuracy on-sensor image projection function was developed. The fabricated 32 x 32 pixel AR LSI compresses 1024 bytes input image data to 64 bytes projection data on the focal plane. It also has the function of outputting the projection data of partial images, or modulating the projection data into the form of spatial and temporal differential data, which fit to motion detection algorithm. The high sensitivity of 20 V/lx・sec and the wide dynamic range of 66 dB are also beneficial for high speed motion detection. As a result, the AR LSI makes it possible to build a high speed image processing systems, even through combination with a low power microcontroller.
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  • An 8 channel parallel readout CCD image sensor
    Y. Morinaka, H. Komobuchi
    Article type: Article
    Session ID: IPU2001-2
    Published: January 26, 2001
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.25.3.0_7
    CONFERENCE PROCEEDINGS FREE ACCESS
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    An 8 channel parallel readout CCD image sensor for high-speed imaging has been developed. The image area of this sensor is divided into 8 rectangular blocks, and the data of each block is read out through an independent amplifier. In the area where there is no photediode (PD) beside VCCD, the space of VCCDs is narrowed down to a HCCD block that is placed at the end of VCCDs, and amplifiers and their peripheral circuits are placed between the spaces of two HCCD blocks with parallel to makes amplifier properties uniform across channels. For VCCD high-speed transfer, VCCD metal wiring structure is used and VCCD slant structure is optimized by the computer 3D simulation. The pixel size is designed to be 11.5 μm x 11.5μm, and amplifiers are placed close to FDA (Floating Diffusion Amplifier) with VCCD slant structure, which realized wide dynamic range.
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  • Membrance Potential Microscope : High-Speed Imaging of Neural Activity
    Ichiro Takashima, Riichi Kajiwara, Toshio Iijima, Yasuhiro Morinaka, H ...
    Article type: Article
    Session ID: IPU2001-3
    Published: January 26, 2001
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.25.3.0_13
    CONFERENCE PROCEEDINGS FREE ACCESS
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    We have developed a membrane potential microscope for monitoring neural activity in the exposed animal's cortex stained with a voltage-sensitive dye. In order to cover wide cortical areas of the brain, we elaborated the microscope system through the following way: (1) Extremely large format CCD chips with multiple outputs were designed. (2) High-speed (〜2ms) digital imaging was attained. (3) A large capacity of frame memory was incorporated. (4) Specially designed optical apparatus was set up. (5) Software tools for neurobiological experiments were prepared. As a result of these, the sysytem was successfully utilized to visualize neural activities in the somatosensory cortex of monkeys.
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  • Study on CMOS Active Pixel Sensor for High-Speed Video Cameras
    Kenji Tajima
    Article type: Article
    Session ID: IPU2001-4
    Published: January 26, 2001
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.25.3.0_19
    CONFERENCE PROCEEDINGS FREE ACCESS
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    In this paper, we discuss the possibility of CMOS image sensors with the APS structure for digital high-speed video cameras based on test chips. Test chips are fabricated by using 0.35um technology. In addition, we show some simulation results of CMOS image sensors in terms of required specification and performance from the viewpoints of application, functionality, and circuit structure. A custom-designed image sensor with parallel-readout. high-speed operation and other functions, is needed to develop an advanced high-speed video camera, realizing higher frame rates and producing pictures of proper resolution. CMOS image sensor can be developed at lower cost than CCD sensors, and its peripheral circuits can be integrated on a single sensor chip.
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  • Calibration of LCD based on the PCA
    Nobuhiko Tamura, Toru Ishii, Narimichi Tsumura, Ikuhiro Yoshida, Youic ...
    Article type: Article
    Session ID: IPU2001-5
    Published: January 26, 2001
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.25.3.0_25
    CONFERENCE PROCEEDINGS FREE ACCESS
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    Calibration of CRT display has been performed by GOG (Gain Offset Gamma) model with high accuracy. The GOG model, however, is not always significant for calibration of LCD. In this research, EOTF (Electro Opical Transfer Function) of reflective-type LCD is modeled to calibrate the color reproduction characteristics of the display by using PCA (Principal Component Analysis). Spectral radiance of 29 colors were estimated using eigenvectors and coefficients. As a result, the average color difference based on the CIE 94 of these 29 samples between measured and estimated by proposed method was 0.4454. In addition, the minimum and maximum color differences were 0.0564 and 0.9651, respectively. It is shown that PCA-model is also effective for CRT display.
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  • Gamut Mapping using Color-Categorical Weighting Method
    Hideto Motomura
    Article type: Article
    Session ID: IPU2001-6
    Published: January 26, 2001
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.25.3.0_31
    CONFERENCE PROCEEDINGS FREE ACCESS
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    Categorical color mapping using color-categorical weighting method is proposed for gamut mapping. This method determines the most optimal mapping point in a destination space by shifting LCH (Luminance, Chroma, Hue) of a source color with color-categorical weighting. The proposed method is compared with GCUSP and clipping method on gamut mapping from a CRT monitor to a printer for evaluating its performance. Categorical color mapping is ranked first with statistically significant difference on Z-score derived from paired comparison experiment.
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  • [title in Japanese]
    Article type: Appendix
    Pages App1-
    Published: January 26, 2001
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.25.3.0_App1
    CONFERENCE PROCEEDINGS FREE ACCESS
    Download PDF (88K)
  • [title in Japanese]
    Article type: Cover
    Pages Cover2-
    Published: January 26, 2001
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.25.3.0_Cover2
    CONFERENCE PROCEEDINGS FREE ACCESS
    Download PDF (69K)
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