ITE Technical Report
Online ISSN : 2424-1970
Print ISSN : 1342-6893
ISSN-L : 1342-6893
25.64
Showing 1-16 articles out of 16 articles from the selected issue
  • Type: Cover
    Pages Cover1-
    Published: October 18, 2001
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
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  • Type: Index
    Pages Toc1-
    Published: October 18, 2001
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
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  • Yoshinori Kono, Hiroshi Hasegawa, Miyoshi Ayama, Masao Kasuga
    Type: Article
    Session ID: MIP2001-72
    Published: October 18, 2001
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    In this paper, the effects of visual information on associated audio information were investigated when they were presented simultaneously under dynamic multimedia environments. Presentation experiments of an audio-visual stimulus were carried out using a computer graphics movie of a moving patrol car and its siren sound. The results obtained show that the sound image at the beginning of an audio-visual presentation is more strongly captured with the visual image than that at the ending, and that the sound image is perceived separately from the visual image even at the timing of the presentation positions of the audio and visual stimuli coincide with each other when the sound source is moving in the opposite direction of the visual image.
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  • Atsushi SHINDO, Madoka HASEGAWA, Shigeo KATO
    Type: Article
    Session ID: MIP2001-73
    Published: October 18, 2001
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Recently, various kinds of demands for image coding such as flexibility, scalability, reliability are rapidly increased. The co-operative working group of ISO and ITU-T is now under standardizing a new image coding standard as JPEG2000 to comply with these demands. The progressive transmission scheme is one of the requirements in the new coding standard. By implementing this property in the coding scheme, the receiver can get a rough image in the early transmission stage and can understand progressively details of the image as transmission proceeds. In this paper, we propose a new progressive coding scheme from the point of legibility of characters in early transmission stages. In our method, the image signal is decomposed into luminance and chrominance components, and luminance component is transmitted at first, and then chrominance component is encoded by the progressive transmission technique. The simulation results show that our proposed method has high legibility of characters and line drawing parts.
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  • Shigeyuki Ishii, Madoka Hasegawa, Shigeo Kato
    Type: Article
    Session ID: MIP2001-74
    Published: October 18, 2001
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    In order to record art works or historical data for the purpose of appreciation, research, education, and so on, studies on digital museum is making progress in various research fields. Especially, in case of preserving three-dimensional objects, it is necessary to take digital photographs from various directions. Thus, the amount of data becomes huge, and a data compression scheme is necessary for archiving them. Moreover, in order to represent art works faithfully, a lossless coding scheme is indispensable. This study aims to construct an encoding system and a browsing system for such images that enables free handling according to the user's demand. As a fundamental study for this purpose, this paper studies a coding method using motion compensation for the image sequence of a cylindrical object taken by rotating it on a turntable.
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  • Tomohide Hayasaka, Hiroto Koshimizu, Miyosi Ayama
    Type: Article
    Session ID: MIP2001-75
    Published: October 18, 2001
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    The contrast sensitivity function(CSF)of a human visual system is the basic characteristic of a pattern recognition mechanism, and it is thought that it influences on image-quality evaluation. In the previous studey, we obtained the result that objective image-quality evaluation(peak SNR, PSNR)does not necessarily correspond with subjective image-quality evaluation. Furthermore large individual differences were observed in the subjective evaluation. We introduced the objective image quality evaluation considering human spacial frequency characteristic, however only one kind of CSF was used. Then, this research aims at investigating the relation between the individual difference of CSF and that found in the subjective image-quality evaluation. Although a large individual difference was found in the CSFs of 16 observers, it can not explain the individual difference in the subjective image-quality evaluation.
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  • Chieko Sakamoto, Masato Sakurai, Miyoshi Ayama
    Type: Article
    Session ID: MIP2001-76
    Published: October 18, 2001
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    In this study, we measured the color appearance of red, yellow, green and blue stimuli in the entire visual field using saturation and hue judgments, blackness evaluation, and categorical color naming. The mean results of the categorical responses for 6 observers show that the constancy region for each stimulus where the same color name as used in the fovea is given, extends to the temporal and lower directions in the visual field. The relation between categorical response of white and blackness response was investigated.
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  • Tetsuya KAJITANI, Hitoshi WATANABE
    Type: Article
    Session ID: MIP2001-77
    Published: October 18, 2001
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    This paper proposes a subjective perspective transformation theory that transforms a real space to the visual skew space. The theory aims at creation of an approximate mental image induced by a perspective to a natural image using both eyes. The image comparison method(:ICM)that measures a skew ratio is proposed. It is verified experimentally that a perspective generated by means of skew ratios measured by ICM has enough similarity to a perspective of image space. Local distribution of skew ratios, their correlations and a similarity ralation of apparent deformation with view distance have investigated. The visual skew space theory is proposed, that determines skew ratios by means of visual space potential in a image space. A property of image space in depth direction that measured by ICM is derived. Based on the defined property, it is possible to realize a image space to a perspective.
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  • Hideaki Maehara, Ken-ichi Katoh, Makoto Nakamura, Kazuo Kamata
    Type: Article
    Session ID: MIP2001-78
    Published: October 18, 2001
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    This paper addresses the concept of information interface between a user and a information source. The concept consists of certain dimensions:access to information devices, and access to services. This leads to an hierachical structure for the information interface. Another important concept in IT society is universal service. The combination of the concept of information interface and the concept of universal service results in universalization of information sources. We also discuss one possible approach to the universalization of information sources.
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  • Atsushi OHTAKE, Masayuki TAKATERA, Yoshio SHIMIZU
    Type: Article
    Session ID: MIP2001-79
    Published: October 18, 2001
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    A subjective similarity estimation model of apparel products image using the image feature is proposed in order to retrieve apparel products by subjectivesimilarity, and the validity is inspect. The subjective similarity of apparel product image was investigated by paired comparison test. The relationship between the subjective similarity and the design elements was analyzed by multidimensional scale method. Fractal dimension and silhouette geometry were adopted as the quantities of image feature. A subjective similarity estimation model was developed by using hierarchic neural network.
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  • Yusuke Kimura, Satoshi Hosoya, Masayuki Takatera, Yoshio Shimizu
    Type: Article
    Session ID: MIP2001-80
    Published: October 18, 2001
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    The aim of this study is to propose a evaluation method of the usability of the information devices by utilizing the information of vision and sound users operating the devices. In concrete, I made an application to analyze user's behavior videotaped by using video cameras, for example user's voice or action, under experimenting. From the vision I picked up various operating action operating time and error times and a way of operating and expression of users. From the sound, I picked up voices of users.
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  • Kumiko AMITA, Satoshi HOSOYA, Masayuki TAKATERA, Yoshio SHIMIZU
    Type: Article
    Session ID: MIP2001-81
    Published: October 18, 2001
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    In our life, it is necessary to use equipment such as electric home appliances and information-processing equipment. There is operating unit by all means in order to operate them. Operability of operating elements decides the good or bad of the equipment. In this study, we propose an evaluation method of the operability that used CG of operating unit. Operation images of subjects were collected as comments while showing the CG, and influence of the geometry on the operation image was investigated. As a result we was able to measure change of operation image by change of the unit shape. This approach will be useful for design of the operating unit that operation method is clear.
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  • Hiroki Takahashi, Masayuki Nakajima
    Type: Article
    Session ID: MIP2001-82
    Published: October 18, 2001
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Image segmentation is not only very important technique, but also challenging issue in Computer Vision. The segmentation of an image and grouping of the segmented regions as an object are very hard task for a computer, but they play a great role in human visual perception. There are, therefore, many researches in the field of color image segmentation. It is very difficult task to make a closed boundary for a region from obtained edges using edge detectors. Active contour model effectively extracts a boundary of an object, but initial boundary affects the final results. Moreover, statistical models have optimization difficulties. In this paper, a novel region growing approach which employs internal features in a region and difference between two adjacent regions is proposed. Small regions occur on irregular boundaries or texture regions by using the conventional region growing segmentation approaches. Our approach reduce the small regions by using color distributions of regions. Moreover, the proposed method extracts segments suitable for human visual perception. The paper shows some examples on both synthetic and real images.
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  • Azam Bastanfard, Hussein Karam, Hiroki Takahashi, Masayuki Nakajima
    Type: Article
    Session ID: MIP2001-83
    Published: October 18, 2001
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Facial aging(senility)is a representation of difference of human face after passing years. Applications of facial aging are widespread. They include animation, face recognition, entertainment, criminal objects like finding murders after number of years, finding missing people, and it can be used for medical surgery and face reconstruction. This paper presents a new method for creating realistic facial aging based on medical information. The approach discusses facial declination based on the medical face anthropometry, and simulates wrinkle with lighting technique to make realistic senilityon the face. The technique produce realistic facial aging. Comparing with other proposed methods our proposed algorithm is easy because it does not need to collect a lot of images. Experimental results demonstrate this approach with a variety of facial senility.
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  • Masayuki Nakajima
    Type: Article
    Session ID: MIP2001-84
    Published: October 18, 2001
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    CG, HI, Multimedia, Virtual Reality Technology are improved rapidly these days for many kind of fields in entertainment like movie, TV and game, and Visualization in Medical, Engineering and Science etc.. I report current topics in SIGGRAPH2001 conference during 11th through 17th, August held in Los Angeles USA.
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  • Type: Appendix
    Pages App1-
    Published: October 18, 2001
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
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