Search Results 1-20 of 49

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  • 3D monitoring for plant growth parameters in field with a single camera by multi-view approach

    Yu ZHANG , Poching TENG , AONO Mitsuko , SHIMIZU Yo , HOSOI Fumiki , OMASA Kenji

    … In recent decades, some photogrammetric methods for 3D monitoring of plant growth and structure parameters have been studied by the automated feature extraction and matching. … Also, we handled effectively the noise problem by minimizing re-projection errors. … The results demonstrated that 3D imaging technique in the study has the potential to remotely monitor plant growth status and estimate growth and structure parameters at various environmental factors outdoors. …

    Journal of Agricultural Meteorology 74(4), 129-139, 2018

    J-STAGE 

  • Fracture Process Reconstruction Method (FRASTA) and Its Hidden Potential  [in Japanese]

    KOBAYASHI Takao

    … <p>Fracture surface topography analysis (FRASTA) technique reconstructs fracture process in microscopic details by matching conjugate fracture surface topographs. … It produces three different results: fractured area projection plot (FAPP), cross-sectional plot (XSP), and fracture progression curve (FPC). …

    Journal of the Society of Materials Science, Japan 65(11), 801-811, 2016

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  • ℓ1 LS and ℓ2 MMSE-based Hybrid Channel Estimation for Intermittent Wireless Connections

    Takano Yasuhiro , Juntti Markku , Matsumoto Tad

    … This is because the ℓ2 MB technique formulated as a minimum mean square error (MMSE) problem improves the mean squared error (MSE) performance by utilizing the subspace projection. … Performance analysis shows that ℓ1 regularized channel estimation does not improve the MSE performance significantly over the ℓ2 MB technique so far as the subspace channel model assumption is correct. …

    IEEE Transactions on Wireless Communications 15(1), 314-328, 2015-08-25

    IR 

  • Implementation of a real-time functional-MRI-based brain state decoder and its potential application as a brain machine interface  [in Japanese]

    BAGARINAO EPIFANIO , Maesawa Satoshi , Watanabe Hirohisa , Mori Daisuke , Nakai Toshiharu , Isoda Haruo , Sobue Gen

    … Real-time functional MRI is a non-invasive technique that enables the real-time analysis of brain activation patterns. … For this, we scanned two participants and asked them to control the movement of an arrow displayed on a projection screen by matching their ongoing brain activity to a pre-defined activation pattern. …

    Transactions of Japanese Society for Medical and Biological Engineering 53(Supplement), S161_02-S161_02, 2015

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  • 0202 Development of a 3D mist distribution measurement technique by Multi-layer Color PIV  [in Japanese]

    YONEZAWA Norio , OISHI Yoshihiko , TASAKA Yuji , MURAI Yuichi

    … This new system allows us to determine the six-layer three-dimensional velocity vector fields at a given frame rate just using a single camera view by color coded volumetric projection of light. … One is a fragility of pattern matching system for strong velocity gradient field. …

    The Proceedings of the Fluids engineering conference 2014(0), _0202-1_-_0202-2_, 2014

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  • GPT Correlation for 2D Projection Transformation Invariant Image Matching  [in Japanese]

    WAKAHARA Toru , YAMASHITA Yukihiko

    … This paper proposes a new technique of 2D projection transformation invariant image matching, GPT (Global Projection Transformation) correlation, as a natural extension of our earlier work, the affine-invariant GAT correlation method. …

    Technical report of IEICE. PRMU 113(346), 49-54, 2013-12-12

  • Automated Scan Prescription for MR Imaging of Deformed and Normal Livers

    GOTO Takao , KABASAWA Hiroyuki

    … The liver's upper edge is detected by template matching and finally identified by applying an active shape model to a sagittal projection image. … Detection of liver edges of various shapes by applying the MAP estimate combined with statistical information from the ROI demonstrated the potential clinical utility of this technique.<br> …

    Magnetic Resonance in Medical Sciences 12(1), 11-20, 2013-03-01

    J-STAGE  Ichushi Web  References (24)

  • Dictionary-Based Compressive SLAM

    TANAKA Kanji , NAGASAKA Tomomi

    … An incremental map compressor is presented by employing a modified random sample consensus (RANSAC) map-matching technique and the compact projection technique. …

    SICE Journal of Control, Measurement, and System Integration 6(1), 54-63, 2013-01-31

    J-STAGE  References (31)

  • An Efficient Volumetric Global Image Registration  [in Japanese]

    LU Shuang , SAKAI Tomoya , IMIYA Atsushi

    … In this paper, we develop a fast algorithm for random-projection-based global registration. … By generating many transformed images from the reference, the nearest neighbour based image registration detects the transformation which establishes the best matching from generated transformations. … To reduce computational cost of the nearest nighbour search without significant loss of accuracy, we first use random projection. …

    IEICE technical report. 112(142), 79-84, 2012-07-12

    References (8)

  • Three-dimensional object recognition based on spherical projection of obtained shapes and textures  [in Japanese]

    YABUSHITA Hiroko , SHIMAMURA Jun , MORIMOTO Masashi

    … We propose a technique for recognizing three-dimensional (3D) objects which is based on spherical projection of obtained shapes and textures. … This technique needs only a few images for learning although the appearance of 3D objects changes as the viewpoint position changes. … The technique recognizes objects by matching spherical-projection images with training images stored in a database. …

    Technical report of IEICE. PRMU 111(379), 73-78, 2012-01-12

    References (10)

  • Three-dimensional object recognition based on spherical projection of obtained shapes and textures  [in Japanese]

    YABUSHITA Hiroko , SHIMAMURA Jun , MORIMOTO Masashi

    … We propose a technique for recognizing three-dimensional (3D) objects which is based on spherical projection of obtained shapes and textures. … This technique needs only a few images for learning although the appearance of 3D objects changes as the viewpoint position changes. … The technique recognizes objects by matching spherical-projection images with training images stored in a database. …

    Technical report of IEICE. Multimedia and virtual environment 111(380), 73-78, 2012-01-12

    References (10)

  • Development of Projection-based Design Support System using Feature Point Detection  [in Japanese]

    KURAMOCHI Motoaki , OGAWA Takuya , YAMAMOTO Shoji

    … We have developed the manufacture and design support system by using projection display based on argument reality. … At the practical implementation, ARToolKit is useful for matching the position between virtual and real object. … Therefore, in this paper, we examined the technique for matching the object to the projection image without the marker by using the natural feature detection. …

    ITE Technical Report 35.8(0), 49-52, 2011

    J-STAGE  References (6)

  • A Fast Block Matching Algorithm Based on Motion Vector Correlation and Integral Projections

    GHONEIM Mohamed , TSUMURA Norimichi , NAKAGUCHI Toshiya , YAHAGI Takashi , MIYAKE Yoichi

    … The block based motion estimation technique is adopted by various video coding standards to reduce the temporal redundancy in video sequences. … The core of that technique is the search algorithm implementedto find the location of the best matched block. … At the same time, a feature domain based matching criteria is used to reduce the complexity resulting from applying the pixel based conventional criteria. …

    IEICE Transactions on Information and Systems 92(2), 310-318, 2009-02-01

    J-STAGE  References (22)

  • RECONSTRUCTING A SUPER-RESOLUTION IMAGE FOR DEPTH-VARYING SCENES

    YOKOYAMA Ami , KUBOTA Akira , HATORI Yoshinori

    … In this paper, we present a novel method for reconstructing a super-resolution image using multi-view low-resolution images captured for depth varying scene without requiring complex analysis such as depth estimation and feature matching. … The proposed method is based on the iterative back projection technique that is extended to the 3D volume domain (i.e., space + depth), unlike the conventional superresolution methods that handle only 2D translation among captured images. …

    IEICE technical report 108(373), 47-50, 2009-01-05

    References (2)

  • Reconstructing a Super-Resolution Image for Depth-Varying Scenes

    YOKOYAMA Ami , KUBOTA Akira , HATORI Yoshinori , SAKAZAWA Shigeyuki

    … In this paper, we present a novel method for reconstructing a super-resolution image using multi-view low-resolution images captured for depth varying scene without requiring complex analysis such as depth estimation and feature matching. … The proposed method is based on the iterative back projection technique that is extended to the 3D volume domain (i.e., space + depth), unlike the conventional superresolution methods that handle only 2D translation among captured images. …

    Reports of the Technical Conference of the Institute of Image Electronics Engineers of Japan 08-05(0), 87-91, 2009

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  • Reconstructing a super-resolution image for depth-varying scenes  [in Japanese]

    YOKOYAMA Ami , KUBOTA Akira , HATORI Yoshinori

    … This paper proposes a novel method for reconstructing a super-resolution image for depth varying scene without requiring complex analysis such as depth estimation and feature matching. … The proposed method is based on the iterative back projection technique that is extended to the 3D volume domain (i.e., spatial+depth), unlike the conventional super-resolution methods that handle only 2D translation among captured images. …

    IEICE technical report 108(228), 7-10, 2008-09-29

    References (2)

  • Reconstructing a super-resolution image for depth-varying scenes  [in Japanese]

    YOKOYAMA Ami , KUBOTA Akira , HATORI Yoshinori

    … This paper proposes a novel method for reconstructing a super-resolution image for depth varying scene without requiring complex analysis such as depth estimation and feature matching. … The proposed method is based on the iterative back projection technique that is extended to the 3D volume domain (i.e., spatial+depth), unlike the conventional super-resolution methods that handle only 2D translation among captured images. …

    IEICE technical report 108(229), 7-10, 2008-09-29

    References (2)

  • Reconstructing a super-resolution image for depth-varying scenes  [in Japanese]

    YOKOYAMA Ami , KUBOTA Akira , HATORI Yoshinori

    … This paper proposes a novel method for reconstructing a super-resolution image for depth varying scene without requiring complex analysis such as depth estimation and feature matching. … The proposed method is based on the iterative back projection technique that is extended to the 3D volume domain (i.e., spatial+depth), unlike the conventional super-resolution methods that handle only 2D translation among captured images. …

    情報処理学会研究報告. SLDM, [システムLSI設計技術] 136, 7-10, 2008-09-29

    References (2)

  • Multi-view Range Image Registration using CUDA

    Sung-In Choi , Soon-Yong Park , Jun Kim , Yong-Woon Park

    IEICE Proceeding Series (39), A7-3, 2008

    DOI 

  • Active Depth Extraction by using a Parallel Analog Circuit Model

    TAKINO Yusuke , HIRAMATSU Yusuke , OHSHIMA Shigemichi

    … To maintain the facial prosthesis stable need to fix part with a little movement of face.In this announcement propose restoration technique of face shape that changes time seriesto detect part with a little movement of face from an expression change.This technique uses the pattern projection method that used the multi slit that has the same space resolution as the gray code projection method to obtain minute shape of the face. …

    Proceedings of the Annual Conference of the Institute of Image Electronics Engineers of Japan 36(0), 49-50, 2008

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