Multimedia Systems Laboratory

Noriaki Asada Professor	Jung-pil Shin Associate Professor	Hirohide Demura Assistant Professor

Recognition, analysis and expression of images and letters are studied in the multimedia systems laboratory. The 3-D motion and the 3-D shapes of the object are analyzed, understood and expressed by computer from the images taken by multi TV camera or video camera in the study of computer vision and/or the 3-D stereovision. Our work has greatly contributed in Hayabusa project. The succession of landing on Itokawa by Hayabusa in November, 2005 owed to preciseness of 3D shape model of Itokawa by University of Aizu very much. And also development of HARMONICS (HAyabusa Remote MONItering & Commanding System) has contributed very much in operation. In the remote sensing, the category classification technique can analyze the land usages from color information of land images. Two laboratory members are engaged in the SELENE project, the Japanese lunar explorer mission, to analyze the lunar mineral composition and to investigate the future moon surface land usage. Furthermore, we are engaged also in space exploration programs in Japan including planetary and an asteroid exploration inquiry plan. Especially, in the asteroid probe program "Hayabusa" launched in 2003 which will reach to an asteroid "Itokawa" in 2005, we are responsible for the determination of the landing point on the asteroid surface and for guide to land on the asteroid by the use of the 3-dimensional recognition technology about its shape, elevation and roughness by the computer vision. In the on-line handwriting character recognition system, the fundamental study to use the handwriting letter as the input system of the computer is investigated. The character recognition is one of the most important fields on the image processing. And also collaborations with the Republic of Korea are implemented by this lab. Laboratory members have participated actively in scientific meetings, both in Japan and abroad. They have presented and participated in seminars, and in presentation of scientific results in fully refereed publications.

Refereed Journal Papers

[jpshin-01:2005]	Jungpil Shin, K. Suzuki, and A. Hasegawa. Handwritten Chinese Character Font Generation Based on Stroke Correspondence. International Journal of Computer Processing of Oriental Languages, 18(3):211- 226, 2005.
	In this paper, we investigate a novel method for an individual's handwritten Chinese character font generation, using stroke correspondence between the reference character database and the compressed character database, by vector quantization. Chinese characters are composed of a combination of radicals. A radical may be separated into several strokes, with each stroke corresponding to two or more common strokes. By paying attention to the characteristics of Chinese characters and the strokes that form them, we consider each stroke to be a vector and compress the stroke pattern using vector quantization. A compression rate of 1.27experiments using both subjective and objective criteria involving 26 subjects and demonstrated that fonts generated successfully reflect the user's individual handwriting. (Awarded a best paper from 2004 Conference on Chinese Language Computing.)
[jpshin-02:2005]	Atsushi Takeda and Jungpil Shin. Scratchiness Expression Focused on Ink Concentration of Oriental Pen. WSEAS Transactions on Computers, 4(12):1109-2750, 2005.
	Ink painting consists of a few simple strokes intended to convey an artist's deep feelings regarding the painted object. Scratchiness in Japanese Kasure is one of the techniques which can express writer's emotion remarkably in calligraphy. When there is a little amount of ink contained in the brush, the phenomenon occurs. An object of which surface is dried and strictness is expressed by the way of drawing techniques. The feature of scratchiness is the dried stroke. For instance, old trees, a cliff and the surface of mountains could be expressed more natural with scratchiness. A novel method focused on the change of the energy is proposed. When the ink permeates into the paper from the brush, the change of energy occurs according to wetting. Scratchiness occurs in the part where a stroke is fast. The volume that the brush touches paper increases, and a decrease of ink becomes remarkable in the part where a stroke is fast. We present some examples of scratchiness as results. The emotion like power and passion of the writer is expressed by our research. The oriental mood and the expression ability of character as a medium are extracted and the artistry rises more.
[jpshin-03:2005]	Nuha L. Othman and Jungpil Shin. Handwritten Signature Evaluation Based on Curve Segmentation. GESTS International Transactions on Computer Science and Engineering, 24(1):19-28, 2005.
	This paper describes a method for handwritten signature evaluation. Signatures are collected using a pen-tablet and expressed as 6-dimensional time series data, x-y coordinate, pen direction, pen altitude, pen pressure and elapsed time. We extracting the signature's shape using chain code and use a linear segmentation algorithm to calculate the maximum length of the signature. Using 4 methods in edge contour representation we do the evaluation for the signature's shape. Linear segmentation algorithm has been implemented in image processing; shape recognition, computer graphics etc. We make an error comparison between English and Japanese signatures based on the average error. We also make an experiment to check the stability error between the both signatures based on the genuine and the forgery signatures. The experimental results show there is a big significant between both signature's and we managed to get a good results in the evaluation process for both of the signatures.
[jpshin-04:2005]	Wondu Chang and Jungpil Shin. Construction of Panoramic and Perspective Image using Spherical Projection from Catadioptric Image. GESTS International Transactions on Computer Science and Engineering, 25(1):185-195, 2005.
	Environment awareness of 360 degree is widely used for virtual reality such as virtual model house in the internet. Catadioptric camera is one of environment awareness system which can picture 360‹degree image in a single shot. General solution generating panoramic image is using cylindrical projection method, however, it has limitation of viewing angle and upper and lower part of source images cannot be seen with panoramic image. This paper proposes a panoramic image construction technique with less distortion using spherical projection algorithm. Moreover, fast perspective image generation method using spherical projection algorithm is shown.

Refereed Proceeding Papers

[jpshin-05:2005]

Atsushi Takeda and Jungpil Shin. Simulating of Kasure Focused on the Change of Energy. In Nikos Mastorakis, editor, 4th WSEAS Int.Conf. on Computational Intelligence Man-Machine Systems and Cybernetics (CIMMACS '05), pages 76-81, Florida, Nov. 2005. World scicence, World science Press.

This paper has discussed the phenomena of Kasure in the calligraphy system, that is, the phenomenon in which the location where a remarkable decrease is observed in the same stroke in the uniformity of the ink concentration occurs. The location where a remarkable decrease is observed in the same stroke in the uniformity of the ink concentration occurs. The reason it causes that occurs is because the speed of taking note on the same stroke differs and the quantity of the ink that is included by the brush differs. A novel method focused on the change of the energy is proposed. When ink is included in the brush, such energy that holds ink exists. Similarly, such energy that holds ink exists even when ink is included in the paper. Areas that the brush sweeps on the paper increase as the brush moves. The energy changes by moving ink from the brush to the paper. Kasure can be examined by a point of view from the energy change. We present some examples of Kasure as results. The emotion like power and passion of the writer is expressed by our research. The oriental mood and the expression ability of character as a medium are extracted and the artistry of rises more.

Unrefereed Papers

[asada-01:2005]

N Asada. Infrared Spectra of Annealed Synthetic Silicates. In C. Kaito and N. Asada, editors, Grain Formation Workshop 2004, volume 24, pages 15-22, Nov. 2004.

It becomes possible to discuss about mineral species and compositions of circumstellar dust grains in each astronomical objects, since detailed structures of 10micron silicate bands become possible to be clarified because of the great progress of observational instruments. Relationships between infrared spectra of interstellar dust grains and synthetic silicate minerals are considered, which are synthesized in solution and annealed in various conditions in composition, temperature and environment.

Grants

[jpshin-06:2005]

Jungpil Shin. Japanese Ministry of Education Grant-in-Aids for Encouragement of Young Scientists, 2005-2008.

Academic Activities

[jpshin-07:2005]	Jungpil Shin, Dec. 2005. Member of the Program Committee, The 2005 International Conference on Machine Learning and Applications
[jpshin-08:2005]	Jungpil Shin, Sept. 2005. Finance Chair, The 2005 Conference of The Japanese Society for Planetary Science(JSPS)

Patents

[asada-02:2005]

Noriaki Asada. Interpolation Method, Patent No. 3249956, November 2001.

Ph.D and Other Theses

[jpshin-09:2005]	Takashi Onose. Graduation Thesis: Feature Analysis of Characters for Signature Evaluation, University of Aizu, 2005. Thesis Advisor: Jungpil Shin
[jpshin-10:2005]	Takanori Kuroiwa. Graduation Thesis: Discovery of Efficient Chinese Characters for Handwritten Style Font Generation, University of Aizu, 2005. Thesis Advisor: Jungpil Shin
[jpshin-11:2005]	Toshihide Tamura. Graduation Thesis: Human Detection System using Stereo Vision, University of Aizu, 2005. Thesis Advisor: Jungpil Shin
[jpshin-12:2005]	Dai Hanata. Graduation Thesis: Interactive Map Search System, University of Aizu, 2005. Thesis Advisor: Jungpil Shin
[jpshin-13:2005]	Ken Maruyama. Graduation Thesis: Online Signature Verification Using Shape Context, University of Aizu, 2005. Thesis Advisor: Jungpil Shin
[jpshin-14:2005]	Atsushi Takeda. Master Thesis: Scratchiness Expression Focused on Ink Concentration of Oriental Pen, University of Aizu, 2005. Thesis Advisor: Jungpil Shin
[jpshin-15:2005]	Nuha Loling Othman. Master Thesis: Handwritten Signature Evaluation Based on Curve Segmentation, University of Aizu, 2005. Thesis Advisor: Jungpil Shin

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