Search Results 1-20 of 60

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  • Personalized computational mechanobiology allows predicting the progression of emphysema from CT images  [in Japanese]

    Suki Béla , Nia Hadi T. , Lutchen Keneth R.

    … The equilibrium configuration was solved and an apparent CT image was created by placing a square grid on the network and within each square, the number of springs were counted which was set to be proportional to CT density. … From the network, a stress map can be computed by averaging the network forces within a pixel. …

    Transactions of Japanese Society for Medical and Biological Engineering Annual58(Abstract), 187-187, 2020

    J-STAGE 

  • Evaluation of Dispersion State of Fibers in Fiber Reinforced Composites by Image Analysis  [in Japanese]

    TERADA Mariko , ICHIKI Makoto , IZAWA Shogo , YAMANAKA Atsuhiko , SHIMAMOTO Daisuke , HOTTA Yuji

    … pixel is prepared and divided by grids into segments. … Herein, grid size can be 2<sup><i>i</i></sup> … (<i>i</i>=3,4,…,<i>N</i>-1) pixel. … <i>D</i>(<i>n</i>) of the marblelike sample image was higher than that of more homogenous one with all grid size. …

    Journal of Textile Engineering 65(5), 79-83, 2019

    J-STAGE 

  • An Outlook into a Possible Intensified Camera Based Thomson Scattering System for High Temperature Plasmas

    LEE Kiyong

    … Due to the broad wavelength range of the scattering spectrum, to increase detection of photons per pixel, the optical setup have to compromise of the most efficient element that uses volume phase holographic (VPH) grating and a wire grid polarizer. …

    Plasma and Fusion Research 14(0), 2401019-2401019, 2019

    J-STAGE 

  • Measurement of unstable fluid flow during liquid phase reaction using laser speckle method  [in Japanese]

    Chikanori Eita , Ono daisuke , Tanoue Ken-ichiro , Nishimura Tatsuo

    … From the particle image velocimetry analysis, it was found that the suitable tracking size and grid size to capture the displacement of laser speckle patterns in this chemical reaction were 101 pixel and 5 pixel, respectively. …

    The Proceedings of the Thermal Engineering Conference 2018(0), 0121, 2018

    J-STAGE 

  • Generalized Image Navigation & Registration Algorithms for Ground and Space Segments

    KAMEL Ahmed Aly

    … Pixel location transformation from imager line of sight reference frame to GOES and CGMS fixed grid frames is also provided for on-ground image registration using resampling.</p> …

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN 16(6), 572-581, 2018

    J-STAGE 

  • Bit-pattern kernel filtering for duplication removing in cell annotation.  [in Japanese]

    NAGASAKA Toru

    … A partial image which are sequentially cropped from same cell by grid search may result in double counting. … Using unique combination of bit-pattern kernel (3x3) filter which contract particular ON-pixel pattern, the duplication remove in cell annotation was achieved.</p> …

    Proceedings of the Annual Conference of JSAI JSAI2018(0), 4Pin147-4Pin147, 2018

    J-STAGE 

  • Four-Directional Pixel-Wise Polarization CMOS Image Sensor Using Air-Gap Wire Grid on 2.5-μm Back-Illuminated Pixels  [in Japanese]

    上坂 祐介 , 山崎 知洋 , 丸山 康 , 中村 元昭 , 的場 義久 , 寺田 尚史 , 小森 健太 , 大庭 義行 , 荒川 伸一 , 平澤 康孝 , 近藤 雄飛 , 村山 淳 , 秋山 健太郎 , 大池 祐輔 , 佐藤 修三 , 江崎 孝之

    映像情報メディア学会技術報告 = ITE technical report 41(10), 31-34, 2017-03

  • <b>FPGA Accelerator for Super-Pixel Segmentation Featuring Clear Detail and Short Boundary </b>

    MIYAMA Masayuki

    … <p>Super-pixel segmentation is to over-divide an image to get object boundaries. … This paper proposes a novel fast and accurate super-pixel segmentation algorithm. … The proposed method starts from the initial division of a regular grid and hierarchically repeats boundary update using an energy function in local. … The penalty term expresses the color similarity between a pixel and a super-pixel. …

    IIEEJ Transactions on Image Electronics and Visual Computing 5(2), 83-91, 2017

    J-STAGE 

  • <b>Three-dimensional Shape Measurement Using Optimal Number of Phase-shifting Steps Based on Light-source-stepping Method</b><b> </b>

    AKATSUKA Yuichi , FUJIGAKI Motoharu , MATUI Toru

    … Therefore, the authors propose a method to create a map of the optimal number of phaseshifting steps for each pixel and confirm the amount of phase shifting at each position in a grid-projected image. …

    Advanced Experimental Mechanics 2(0), 105-111, 2017

    J-STAGE 

  • Precise Ground Surface Reconstruction Using a Single Rotating Camera  [in Japanese]

    Sugimoto Shigeki , Motooka Kouma , Phan Doan-Phuc , Okutomi Masatoshi , Shima Takeshi

    … We estimate a regular-grid ground surface, whose coordinate system is determined from the camera positions estimated by a standard structure from motion (SfM) technique. …

    The Journal of the Institute of Image Electronics Engineers of Japan 45(3), 278-286, 2016

    J-STAGE 

  • A 4M pixel full-PDAF CMOS image sensor with 1.58 μm 2×1 On-Chip Micro-Split-Lens technology

    Morimitsu Atsushi , Atif Muhammad , Nitta Yoshikazu , Hirota Isao , Yokogawa Sozo , Ohdaira Isao , Matsumura Masao , Takahashi Hiroaki , Yamazaki Toshio , Oyaizu Hideki , Incesu Yalcin

    … With this architecture, we realize a full phase-detection auto focus (PDAF) CIS, where all photo detectors (PDs) are L/R paired with a common OCL, the same color on-chip-color-filter (OCCF) and without metal grid between the L/R pixel boundary. …

    ITE Technical Report 39.35(0), 5-8, 2015

    J-STAGE 

  • Base-Object Location Problems for Base-Monotone Regions

    Chun Jinhee , Horiyama Takashi , Ito Takehiro , Kaothanthong Natsuda , Ono Hirotaka , Otachi Yota , Tokuyama Takeshi , Uehara Ryuhei , Uno Takeaki

    … A base-monotone region with a base is a subset of the cells in a pixel grid such that if a cell is contained in the region then so are the ones on a shortest path from the cell to the base. … The problem of decomposing a pixel grid into disjoint base-monotone regions was first studied in the context of image segmentation. …

    Theoretical Computer Science 555, 71-84, 2014-10-23

    IR  DOI 

  • A Friendly Image Sharing Method

    LO Tsung-Ming

    This image sharing method is a secure way of protecting the security of the secret images. In 2011, Wang et al. proposed an image sharing method with verification. The idea of the method is to embed t …

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E97.A(12), 2684-2687, 2014

    J-STAGE 

  • [Paper] Demonstrations of Polarization Imaging Capability and Novel Functionality of Polarization-Analyzing CMOS Image Sensor with 65 nm Standard CMOS Process

    Tokuda Takashi , Sasagawa Kiyotaka , Wakama Norimitsu , Noda Toshihiko , Kakiuchi Kiyomi , Ohta Jun

    … Polarization-analyzing image sensor pixel was realized using wire grid structures designed with a metal wiring layer within the standard CMOS process. … Taking advantage of sub-100 nm CMOS process, a fine grid pitch was realized. … With an aim of further performance improvement, subtraction readout scheme and multiple layer stacked on-pixel polarizer were proposed and discussed. …

    ITE Transactions on Media Technology and Applications 2(2), 131-138, 2014

    J-STAGE 

  • Base location problems for base-monotone regions

    Chun Jinhee , Horiyama Takashi , Ito Takehiro , Kaothanthong Natsuda , Ono Hirotaka , Otachi Yota , Tokuyama Takeshi , Uehara Ryuhei , Uno Takeaki

    … The problem of decomposing a pixel grid into base-monotoneregions was first studied in the context of image segmentation. … It is known that for a given n × n pixel grid and baselines, one can compute in O(n^3) time a maximum-weight region that can be decomposed into disjoint base-monotone regions [Chun et al. …

    Lecture Notes in Computer Science 7748, 53-64, 2013-02-14

    IR  DOI 

  • High-Speed Volume Rendering in CAVEs

    YAMAURA Yuki , MASADA Youhei , KAGEYAMA Akira

    … The proposed method accelerates the standard three-dimensional texture-slicing approach to volume rendering by making use of asynchronous data transfer with the pixel buffer object of graphics processors. … The method enables stereoscopic animation of volume rendering at five frames per second for scalar data of 512<sup>3 </sup>grid points in a four-screen CAVE system. …

    Plasma and Fusion Research 8(0), 1201135-1201135, 2013

    J-STAGE 

  • Direct Ground Surface Reconstruction from Stereo Images

    Sugimoto Shigeki , Kato Takaaki , Motooka Kouma , Okutomi Masatoshi

    … We propose a method for directly estimating a square grid ground surface from stereo images. … We formulate a data term, representing the sum of the squared differences of photometrically transformed pixel values in homography-related projective triangular patches between the two stereo images, by the inverse compositional trick for both surface and photometric parameters for realizing an efficient estimation algorithm. …

    Information and Media Technologies 8(4), 1051-1055, 2013

    J-STAGE 

  • Direct Ground Surface Reconstruction from Stereo Images

    Sugimoto Shigeki , Kato Takaaki , Motooka Kouma , Okutomi Masatoshi

    … We propose a method for directly estimating a square grid ground surface from stereo images. … We formulate a data term, representing the sum of the squared differences of photometrically transformed pixel values in homography-related projective triangular patches between the two stereo images, by the inverse compositional trick for both surface and photometric parameters for realizing an efficient estimation algorithm. …

    IPSJ Transactions on Computer Vision and Applications 5(0), 60-64, 2013

    J-STAGE 

  • On the Base-Line Location Problem for the Maximum Weight Region Decomposable into Base-Monotone Shapes

    HORIYAMA Takashi , ITO Takehiro , KAOTHANTHONG Natsuda , ONO Hirotaka , OTACHI Yota , TOKUYAMA Takeshi , UEHARA Ryuhei , UNO Takeaki

    … We study the problem of decomposing a pixel grid into base-monotone regions so that the sum of the weights of the regions is maximized. … It is known that for a given n x n pixel grid with some baselines, one can compute a maximum-weight region which can be decomposed into disjoint base-monotone regions in O(n^3) time. …

    IEICE technical report. Theoretical foundations of Computing 112(21), 37-43, 2012-04-20

    References (10)

  • DS-1-11 An Algorithm for Optimally Locating Baselines using Quad Decomposition

    Chun Jinhee , Kaothanthong Natsuda , Otachi Yota , Takahashi Hiromi , Tokuyama Takeshi

    … The baselines are located using a quad decomposition which recursively decompose a pixel grid P into 4^l rectangular pixel grid for given l levels. … The optimal room-edge region of an m×n rectangular pixel grid G can be computed in O(mn^2) time. …

    Proceedings of the IEICE General Conference 2012年_情報・システム(1), "S-21"-"S-22", 2012-03-06

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