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Displaying 1-13 of 13 articles from this issue
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Article type: Cover
Pages Cover1-
Published: October 31, 2002
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (12K) -
Article type: Index
Pages Toc1-
Published: October 31, 2002
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (45K) -
Mitsuru Sugeno, Madoka Hasegawa, Shigeo KatoArticle type: Article
Session ID: ME2002-55
Published: October 31, 2002
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSRecently, it is desirable to embed the creation date or the implementor of the image into the image itself in order to manage or handle images easily. However, the method which embeds side information, such as digital watermarking technique degrades image quality. In this paper, we propose the method for embedding data into an image based on adaptive lossless coding which select suitable coding parameter for each block. In our proposed method, data are embedded by using the flexibility of parameter selection and without degrading image quality.View full abstractDownload PDF (447K) -
Hiroyuki MATSUNAMI, Madoka HASEGAWA, Shigeo KATOArticle type: Article
Session ID: ME2002-56
Published: October 31, 2002
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSIn recent years, the opportunity to handle image information on a network is increasing, and the demand for the unified lossless/lossy coding system in which progressive transmission of still images are possible has been increasing. International standard coding system JPEG widely used in the field of image coding uses DCT (Discrete Cosine Transform) for the coding model and enables progressive coding, but it is difficult to encode in the lossless manner. However, after the image coded by JPEG is transmitted, if the difference of an original image and the decoded image is transmitted, lossless coding can be realized. In this study, we consider the quantization of DCT coefficients in the 2 stages transmission method based on this idea. In this paper, we report the result on the entropy of DCT coefficients and difference, and the quality of the image in the progressive transmission.View full abstractDownload PDF (468K) -
Koji WATANABE, Mie SATO, Masao KASUGA, Kazuo HASHIMAArticle type: Article
Session ID: ME2002-57
Published: October 31, 2002
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSIn order to realize smooth communication between a man and a machine, the recognition of facial expressions plays an important role. We aim to construct an automatic extraction system of facial expressions. The system can pinpoint the position of a face and extract characteristic points on the face, and also it can recognize facial expressions. A face region and facial parts are extracted from the facial image photographed with a color CCD camera, and the expression is automatically analyzed using pattern matching with an expression template. We classify the expression into one of 4 expressions of "angry", "joy", "surprise" and "sadness" and compare it with the actual expression.View full abstractDownload PDF (636K) -
Yuko SAIGO, Mie SATO, Masao KASUGA, Shoutaro MIWA, Kazuo HASHIMAArticle type: Article
Session ID: ME2002-58
Published: October 31, 2002
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSFacial expression is one of the natural and immediate means for human beings to communicate their emotions and intentions. In most cases, communication including facial expressions is smoother than one using only verbal means. This paper proposes a new facial caricaturing method of emotional expressions using a small set of characteristic points on facial parts. This method adds wrinkles to a resulting portrait to be made rich in emotional expressions. Evaluation experiments of the face identification and the facial expression recognition are carried out using facial images and their portraits. It is found that perceived expressions are in good agreement with the presented expressions. The results also show that the wrinkles are effective in creating the portraits of emotional expressions.View full abstractDownload PDF (581K) -
Yoshimichi Tsuzuki, Tadaaki Akashi, Satoshi Miyaji, Liang Zhao, Hideo ...Article type: Article
Session ID: ME2002-59
Published: October 31, 2002
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSWe propose an IP videophone system for remote care-support, in which every manual operation including line-connection, transmission/reception and camera works can be remote-controlled.View full abstractDownload PDF (663K) -
Takahiro HARA, Atsushi YAMASHITA, Toru KANEKO, Kenjiro T. MIURAArticle type: Article
Session ID: ME2002-60
Published: October 31, 2002
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSIt is effective to use the sound in inspecting the inside of objects where it is unable to see. For example, when we knock objects, the sound changes by the difference of the material and with or without the deficit. This technique is called the hammering test. However, such inspection is done with the experience and sense of a human operator, and has the individual difference, which results in the lack of the objectivity. In this study, we analyze the sound signal in the time and frequency domain to distinguish the categories of the sound, and combine the image signal with the hammering test. In this paper, the results that are given in a color map representation about the thickness of a wood board are reported as a preliminary exoeriment.View full abstractDownload PDF (728K) -
Atsushi Yamashita, Masaki Nishimura, Masayuki Kuramoto, Toru Kaneko, K ...Article type: Article
Session ID: ME2002-61
Published: October 31, 2002
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSIn this paper, we propose a new method that can remove view-disturbing waterdrops from images by processing images taken with a pan-tilt camera system and improve the quality of images. In rainy days, it is often the case that images taken by the camera are hard to see because of adherent waterdrops on the surface of the protecting glass. In our method, the images taken by changing the direction of eyeshot are compared, and the region where waterdrops exist can be eliminated. The experimental results show the effectiveness of the proposed method.View full abstractDownload PDF (670K) -
Setsuko ISHII, David GAVILAN RUIZ, Hiroki TAKAHASHI, Masayuki NAKAJIMAArticle type: Article
Session ID: ME2002-62
Published: October 31, 2002
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSThe purpose of this study is to investigate techniques of generating a realistic 3D soap bubble model which we aim to apply to a holographic image. Holography is a technology that records 3D images by using laser light. As technologies have been evolving, it has become possible to record various images as holograms, for example, momentary scenes and synthetic images. On the other hand, soap bubbles in natural environment are very attractive subjects for hologram because of their features, constant transformation, complex interference colors and reflection. However, shooting such real object directly to make a hologram is still not possible. Hence, we aim to make a hologram from the realistic 3D soap bubble model. There are two different approaches to get realistic model, which are based on physical models and real pictures. However, the first one is too complex because of the large amount of factors to be considered. Thus, we try to build a model by using real pictures. As a first stage, we investigate the technique of extraction of the soap bubble in the real picture. In this paper, we present a way of extracting soap bubble contours by using g-snakes (Generalized Active Contour Models).View full abstractDownload PDF (720K) -
Masayuki NakajimaArticle type: Article
Session ID: ME2002-63
Published: October 31, 2002
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSCG, 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 SIGGRAPH2002 conference during 21th through 26th, July held in San Antonio, USA.View full abstractDownload PDF (1103K) -
Article type: Appendix
Pages App1-
Published: October 31, 2002
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (71K) -
Article type: Appendix
Pages App2-
Published: October 31, 2002
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (71K)
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