Faculty Profiles - Noboru Babaguchi

Papers - Noboru Babaguchi

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Motion estimation and detection of complex object by analyzing resampled movements of parts Reviewed

P Piamsa-nga, N Babaguchi

ICIP: 2004 INTERNATIONAL CONFERENCE ON IMAGE PROCESSING, VOLS 1- 5 365 - 368 2004

A moving object that has many complex moving parts is very hard to detect and its motion is not easy to estimate. In this paper, we present a new technique for motion estimation and detection of moving complex objects by analyzing the resampled motions of the parts of objects. The Kalman filter is used to track all resampled movements and the tracked routes are classified into groups that share the same fundamental movements. Our simulation show that recall of motion estimation and detection is approximately 0.8, while the computation drops exponentially.

Fault-Tolerant Control Using Time-Sharing Multirate Controllers Reviewed

H. Kawahara, Y. Ito, N. Babaguchi

Proc. of the 1st International Symposium on Systems & Human Science - For Safety, Security, and Dependability 178 - 183 2003.11

Intermodal Collaboration: A Strategy for Semantic Content Analysis for Broadcasted Sports Video Reviewed

N. Babaguchi, N. Nitta

Proc. of 2003 IEEE International Conference on Image Processing (ICIP2003) 2003.9

Effect of personalization on retrieval and summarization of sports video

Noboru Babaguchi, Kouzou Ohara, Takehiro Ogura

ICICS-PCM 2003 - Proceedings of the 2003 Joint Conference of the 4th International Conference on Information, Communications and Signal Processing and 4th Pacific-Rim Conference on Multimedia 2 ( 2 ) 940 - 944 2003

Personalization is one of the most important mechanisms to make multimedia systems easy to use. In video applications, its embodiment is to tailor video contents for a particular viewer. For this purpose, we are now developing a system of retrieving and browsing video segments, called video portal with personalization (VIPP). VTPP is characterized by 1) supporting the viewer's access to video contents and making a summarized video clip by taking his/her preference into account, and 2) acquiring the viewer's profile from his/her operations automatically. In this paper, we discuss the effect of personalization on retrieval and summarization of sports videos on VIPP.

On personalizing video portal system with metadata Reviewed

K Ohara, T Ogura, N Babaguchi

KNOWLEDGE-BASED INTELLIGNET INFORMATION AND ENGINEERING SYSTEMS, PT 2, PROCEEDINGS 2774 1062 - 1069 2003

Recently, the necessity for a system which supports an access to videos has been increasing. In addition, it is strongly desired to take a user's preference into account to realize a more flexible system. For this background, we propose a system which can automatically acquire the user's preference by monitoring the actions by the user, as well as which can provide the functions such as efficient retrieval and browsing of video segments, by taking advantage of their metadata. Furthermore we experimentally show its usefulness.

Towards abstracting sports video by highlights Reviewed

N Babaguchi

2000 IEEE INTERNATIONAL CONFERENCE ON MULTIMEDIA AND EXPO, PROCEEDINGS VOLS I-III 1519 - 1522 2000

Recently, video abstraction has become a demanding application in multimedia computing. It is defined as creating shorter video clips or video posters from the original video stream. In this paper, we present a basic approach towards abstracting sports video by highlights, dealing with American football games, Using event based indexing, we create an abstracted video clip automatically. To select the appropriate highlights of the game, an impact factor reflecting on the importance of the event is newly introduced. It was possible to make an about 5-minute clip from the 3-hour original video.

Detecting events from continuous media by intermodal collaboration and knowledge use Reviewed

N Babaguchi, S Sasamori, T Kitahashi, R Jain

IEEE INTERNATIONAL CONFERENCE ON MULTIMEDIA COMPUTING AND SYSTEMS, PROCEEDINGS VOL 1 782 - 786 1999

In this paper, we propose an event network, which is a structured representation oriented for the contents of continuous media, as well as present two methods of detecting events as the first step to construct the network. We here deal with sports TV programs, considering American football as a case study. The first method is simple intermodal collaboration: linking between visual and linguistic (closed caption) streams. Using domain knowledge about state transitions of football games, the second method attempts to extract specific visual objects including the information about contents. The experimental results indicate that the both methods are effective for event detection.

Solving contradiction in knowledge-base without interaction Reviewed

K Katsurada, M Koyama, K Ohara, N Babaguchi, T Kitahashi

1998 IEEE INTERNATIONAL CONFERENCE ON SYSTEMS, MAN, AND CYBERNETICS, VOLS 1-5 1546 - 1551 1998

We propose a non-interactive method for solving the contradictions caused by exceptions to ordinary rules. It is realized by 1) detecting the ordinary rules which have the instances in their bodies, and 2) converting them into the default; rules. To reduce the default rules which need much time in reasoning, we convert the minimal sets of ordinary rules to solve contradictions. Since the proposed method is executed without interaction with human, it contributes to automatic rule-base maintenance.

Generation of sketch map image and its instructions to support the understanding of geographical information Reviewed

Noboru Babaguchi, Seiichiro Dan, Tadahiro Kitahashi

Proceedings - International Conference on Pattern Recognition 3 274 - 278 1996

In this paper, we propose a method of generating a sketch map drawing and its instructions in order to support the route understanding of a human. Both are given from a structured data, called the road network, which is a graph augmented by the attributes of roads and crossings. In generating a sketch map drawing, the pictorial information about the shape and the direction of roads is modified. The sketch map drawing can be generated at any simplification level by controlling a parameter called simpleness. The instructions corresponding to the sketch map are produced by assigning appropriate terms into sentence templates. We verified that favorable results are obtained by this method. © 1996 IEEE.

REPRESENTING, UTILIZING AND ACQUIRING KNOWLEDGE FOR DOCUMENT IMAGE UNDERSTANDING Reviewed

K KISE, N BABAGUCHI

IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS E77D ( 7 ) 770 - 777 1994.7

This paper discusses the role of knowledge in document image understanding from the viewpoints of representation, utilization and acquisition. For the representation of knowledge, we propose two models, a layout model and a content model, which represent knowledge about the layout structure and content of a document, respectively. For the utilization of knowledge, we implement layout analysis and content analysis which utilize a layout model and a content model, respectively. The strategy of hypothesis generation and verification is introduced in order to integrate these two kinds of analysis. For the acquisition of knowledge, we propose a method of incremental acquisition of a layout model from a stream of example documents. From the experimental results of document image understanding and knowledge acquisition using 50 samples of visiting cards, we verified the effectiveness of the proposed method.

GENERATION OF SKETCH MAP DRAWING FROM VECTORIZED IMAGE Reviewed

N BABAGUCHI, K TANAKA, T KITAHASHI

ICIP-94 - PROCEEDINGS, VOL III 207 - 211 1994

Curvedness of a line picture Reviewed

Noboru Babaguchi, Tsunehiro Aibara

Pattern Recognition 20 ( 3 ) 273 - 280 1987

The shape analysis of a binary picture is of great importance for pictorial pattern recognition. In this paper, we propose a useful geometric feature parameter called curvedness. Curvedness represents which lines are dominant in a binary picture, straight or curved. Our algorithm for measuring curvedness is based on the relationship between the distance to a boundary point on each black point along each quantized direction and the mean width of a binary picture. We investigate the fundamental property of curvedness. The experimental results for Japanese Hiragana and Kanji characters show the validity of curvedness. © 1987.

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Papers - Noboru Babaguchi