ITE Technical Report
Online ISSN : 2424-1970
Print ISSN : 1342-6893
ISSN-L : 1342-6893
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33.44
Displaying 1-17 of 17 articles from this issue
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  • [title in Japanese]
    Article type: Cover
    Pages Cover1-
    Published: October 26, 2009
    Released on J-STAGE: September 20, 2017
    DOIhttps://doi.org/10.11485/itetr.33.44.0_Cover1
    CONFERENCE PROCEEDINGS FREE ACCESS
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  • [title in Japanese]
    Article type: Index
    Pages Toc1-
    Published: October 26, 2009
    Released on J-STAGE: September 20, 2017
    DOIhttps://doi.org/10.11485/itetr.33.44.0_Toc1
    CONFERENCE PROCEEDINGS FREE ACCESS
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  • A Study on Music Theory Based Automatic Conversion Method from Music Signal to Music Score
    Yoshimi WATANABE, Tsuyoshi YAMAMOTO
    Article type: Article
    Session ID: ME2009-175
    Published: October 26, 2009
    Released on J-STAGE: September 20, 2017
    DOIhttps://doi.org/10.11485/itetr.33.44.0__1-1_
    CONFERENCE PROCEEDINGS FREE ACCESS
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    As digital musical making environment is getting popular, the demand of automatic score reading system is increasing. Such systems convert digital audio signal into digital score information such as MIDI and XML based musical scores, however, the accuracy of currently available systems is far from practical use. Our study is aiming to improve quality of score reading by using musical theories to intermediate score in MIDI forma produced by conventional systems. In this report, we propose the use of well known constraints in music theory and the procedures to refine machine generated music scores.
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  • A note distance between music pieces based on personal preferences and its application to music retrieval
    Kazuya KOBAYASHI, Miki HASEYAMA
    Article type: Article
    Session ID: ME2009-176
    Published: October 26, 2009
    Released on J-STAGE: September 20, 2017
    DOIhttps://doi.org/10.11485/itetr.33.44.0_3
    CONFERENCE PROCEEDINGS FREE ACCESS
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    This paper proposes a new calculation method of distance between music pieces based on personal preferences. In the proposed method, in order to utilize musical features for the distance calculation, feature vectors which represent melody, rhythm, and timbre, are firstly calculated from traning data sets. Then, by using the feature vectors, a metric having a general form of the Mahalanobis distance is defined and learned. Specifically, the metric is learned by minimizing a cost function designed so that the cost increases when the distance between dissimilar music pieces is shorter than the distance between similar music pieces. According to the distance based on the metric, the accurate retrieval of similar music can be expected.
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  • A note on accurate scene segmentation by video structure analysis : An approach using new features obtained by PLSA
    Makoto YAMAMOTO, Miki HASEYAMA
    Article type: Article
    Session ID: ME2009-177
    Published: October 26, 2009
    Released on J-STAGE: September 20, 2017
    DOIhttps://doi.org/10.11485/itetr.33.44.0_7
    CONFERENCE PROCEEDINGS FREE ACCESS
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    A method for accurate scene segmentation based on statistical trend analysis of audiovisual features is proposed. In the proposed method, based on the assumption that audiovisual features in the same broadcast programs include similar trends, their trends are analyzed by using Probabilistic Latent Semantic Analysis (PLSA), the method for statistical trend analysis. Then the proposed method calculates new features representing these trends. By using these new features, degradation of scene segmentation accuracy, which results from the direct use of the features obtained from the audiovisual materials, can be avoided and thereby accurate scene segmentation becomes feasible. Experimental results performed by applying the proposed method to actual broadcast programs are shown to verify the effectiveness of the proposed method.
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  • Seeking Applications of Image Processing Technologies
    Toru KANEKO
    Article type: Article
    Session ID: ME2009-178
    Published: October 26, 2009
    Released on J-STAGE: September 20, 2017
    DOIhttps://doi.org/10.11485/itetr.33.44.0_11
    CONFERENCE PROCEEDINGS FREE ACCESS
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    The author has been engaged in research on image processing for long years since the late 1970s. In early years, works were for applications with line-drawing images, and thereafter efforts have been made with various kinds of images taken by laser-vision sensors, conventional and omni-directional cameras. This report briefly introduces application examples.
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  • Towards the Ultimate Human Interface
    Fumio KISHINO
    Article type: Article
    Session ID: ME2009-179
    Published: October 26, 2009
    Released on J-STAGE: September 20, 2017
    DOIhttps://doi.org/10.11485/itetr.33.44.0_17
    CONFERENCE PROCEEDINGS FREE ACCESS
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    Ultra realistic communications are expected to realize a new communication method which will connect among different sites. In this situation, it will become more important to communicate with one another via a virtual environment which is generated by virtual reality technique on the computer network. In order to help an operator work various things in virtual space smoothly, we hope to realize much more convenient human interface in virtual space rather than real space. Therefore, we are studying on various methods by which computer can understand human's intention and realize a higher support to various works.
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  • Current Topics for Computer Graphics : Report of SIGGRAPH2009
    Masayuki Nakajima
    Article type: Article
    Session ID: ME2009-180
    Published: October 26, 2009
    Released on J-STAGE: September 20, 2017
    DOIhttps://doi.org/10.11485/itetr.33.44.0_21
    CONFERENCE PROCEEDINGS FREE ACCESS
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    CG, Human Interface, Multimedia, Virtual Reality Technology are improved rapidly these days for many kindls of fields in entertainment like movie, TV and game and Visualization in Engineering, Science and Art etc.. I report current topics in 36^<th> SIGGRAPH2009 conference during 3rd, August through 7th, August held in New Orleans Convention Center, Louisiana, USA.
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  • SIGGRAPH2009 paper summary
    Hiroki Takahashi
    Article type: Article
    Session ID: ME2009-181
    Published: October 26, 2009
    Released on J-STAGE: September 20, 2017
    DOIhttps://doi.org/10.11485/itetr.33.44.0_27
    CONFERENCE PROCEEDINGS FREE ACCESS
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    SIGGRAPH is an international conference related to CG (Computer Graphics) and interactive technology. This annual conference was held from 3rd in August to 7th in August at New Orleans, Louisiana, USA. This article gives brief review of papers presented at SIGGRAPH2008.
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  • Synthesizing Arbitrary Viewpoint Images from Multi-View Images Considering Concavo-convex Shape
    Shinichi SUMIYOSHI, Yuji SAKAMOTO
    Article type: Article
    Session ID: ME2009-182
    Published: October 26, 2009
    Released on J-STAGE: September 20, 2017
    DOIhttps://doi.org/10.11485/itetr.33.44.0_31
    CONFERENCE PROCEEDINGS FREE ACCESS
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    This paper proposes an effective method to synthesize arbitrary viewpoint images for the object with concavo-convex shape by constructing a 3D model from multi-view images. In the proposed method, a field which should be deformed in the 3D model is calculated with Block Space Carving method based on Space Carving method. In addition, the proposed method synthesizes 2D images at the camera positions that captured photographs and acquires robust evaluation objects for the 3D model. The proposed method constructs the 3D model considering concavo-convex shape by deforming the 3D model in the field while comparing 2D images with the photographs. At the end of this paper, the results of the simulation experiments with synthesizing arbitrary viewpoint images show that the proposed method is effective.
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  • A Study on A 3D-CG Modeling Tool by Augmented Reality using ARToolKit
    Hiroki IMAMURA
    Article type: Article
    Session ID: ME2009-183
    Published: October 26, 2009
    Released on J-STAGE: September 20, 2017
    DOIhttps://doi.org/10.11485/itetr.33.44.0_35
    CONFERENCE PROCEEDINGS FREE ACCESS
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    Recently, some modeling tools for generation of 3D-GC have been proposed. In these methods, we have to generate 3D models using a 2D input device such as mouse in 2D space projected from 3D space or orthographic views. In this paper, we attempt to construct a 3D-CG modeling tool by a marker which can input position and direction in 3D space, using ARToolKit for Augmented Reality. By this modeling tool, we can generate 3D-CG modes in 3D space directly. Therefore, we expect that we can intuitively generate 3D-CG models comparing with conventional 3D-CG modeling tools.
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  • A prototype system of composite image generation for Haiku
    Kyouhei MINATO, Rikio ONAI
    Article type: Article
    Session ID: ME2009-184
    Published: October 26, 2009
    Released on J-STAGE: September 20, 2017
    DOIhttps://doi.org/10.11485/itetr.33.44.0_43
    CONFERENCE PROCEEDINGS FREE ACCESS
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    Haiku is a short poem, but it can be reminded of the scene. A new entertainment can be invented if a computer can represent the scene. This paper reports on prototype system of composite image generation for Haiku. The system processes it as follows. It extracts feature words from the haiku, and searches for images by those words as query on the Web. Then it elects images that suit feature words by the image analysis, and compounds these images. To achieve the system, the technologies of morphological analysis, extracting feature words, clustering, region segmentation and blending are needed.
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  • A Note on Visualization of Video Retrieval Based on Perceptual Grouping
    Ryota TOKUMOTO, Miki HASEYAMA
    Article type: Article
    Session ID: ME2009-185
    Published: October 26, 2009
    Released on J-STAGE: September 20, 2017
    DOIhttps://doi.org/10.11485/itetr.33.44.0_47
    CONFERENCE PROCEEDINGS FREE ACCESS
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    This paper proposes a visualization method of video retrieval based on perceptual grouping. The perceptual grouping is a perceptual phenomenon which a human perceives figures as unities in eyeshot. We have previously proposed a video retrieval system for providing the videos desired by the users if users do not have specific queries. However, in traditional method, the interface is not considered a past search history. Thus, users cannot distinguish precisely between a similar video and a video provided newly from past search results. And, it becomes difficult to confirm the change of the video search results in a series of flows along the search history. Therefore, the proposed method arranges the videos in the three-dimensional space. Furthermore, we visualize the video retrieval results based on the perceptual grouping. Consequently, the effective visualization of the video retrieval results is discussed.
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  • A Note on Improvement of Coding Efficiency of Distributed Video Coding Based on Frame Reconstruction : Reconstructon of Key and Wyner-Ziv Frames Based on Error Correction
    Shigeki TAKAHASHI, Takahiro OGAWA, Miki HASEYAMA
    Article type: Article
    Session ID: ME2009-186
    Published: October 26, 2009
    Released on J-STAGE: September 20, 2017
    DOIhttps://doi.org/10.11485/itetr.33.44.0_51
    CONFERENCE PROCEEDINGS FREE ACCESS
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    This paper proposes a new method which improves coding efficiency of distributed video coding (DVC). Before the encoding process of key frames, the proposed method adds missing areas to the key frames and reduces the bit rate of the target video sequence. In the decoder, the proposed method interpolates the missing areas and reconstructs Wyner-Ziv (WZ) frames and successive key frames based on error correction results of the WZ frames. Then, since decoded WZ frames are accurately reconstructed, and interpolation errors of the missing ares are effectively reduced, the proposed method can achieve higher rate-distortion (RD) performance than the traditional DVC. Experimental results show the improvement of the proposed method over the traditional DVC.
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  • [title in Japanese]
    Article type: Appendix
    Pages App1-
    Published: October 26, 2009
    Released on J-STAGE: September 20, 2017
    DOIhttps://doi.org/10.11485/itetr.33.44.0_App1
    CONFERENCE PROCEEDINGS FREE ACCESS
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  • [title in Japanese]
    Article type: Appendix
    Pages App2-
    Published: October 26, 2009
    Released on J-STAGE: September 20, 2017
    DOIhttps://doi.org/10.11485/itetr.33.44.0_App2
    CONFERENCE PROCEEDINGS FREE ACCESS
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  • [title in Japanese]
    Article type: Appendix
    Pages App3-
    Published: October 26, 2009
    Released on J-STAGE: September 20, 2017
    DOIhttps://doi.org/10.11485/itetr.33.44.0_App3
    CONFERENCE PROCEEDINGS FREE ACCESS
    Download PDF (83K)
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