Dr. Hiroaki Ikeda Profile

Dr. Hiroaki Ikeda

at Chiba Univ

SPIE Involvement:

Author

Publications (6)

Proceedings Article | 23 June 2003 Paper

Mixed variables modeling method to estimate network video quality

Hiroaki Ikeda, Takeshi Yoshida, Tomoko Kashima

Proceedings Volume 5150, (2003) https://doi.org/10.1117/12.510053

KEYWORDS: Video, Mathematical modeling, Video processing, Systems modeling, Visual process modeling, RGB color model, Principal component analysis, Molybdenum, Statistical analysis, Algorithm development

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Proceedings Article | 22 March 1999 Paper

Measurement method for spectral responsivity of digital cameras with tone characteristics compensation per pixel

Hiroaki Sugiura, Tetsuya Kuno, Narihiro Matoba, Hiroaki Ikeda

Proceedings Volume 3650, (1999) https://doi.org/10.1117/12.342857

KEYWORDS: Digital cameras, Cameras, Lamps, Reflectivity, Diffusers, Computing systems, Televisions, Internet, Signal processing, Imaging systems

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Proceedings Article | 22 January 1999 Paper

Application of new type of distributed multimedia databases to networked electronic museum

Kazuhide Kuroda, Naohisa Komatsu, Kazumi Komiya, Hiroaki Ikeda

Proceedings Volume 3528, (1999) https://doi.org/10.1117/12.337446

KEYWORDS: Databases, Telecommunications, Multimedia, Distributed computing, Data acquisition, Human-machine interfaces, Control systems, Computing systems, Computer networks, Data communications

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Recently, various kinds of multimedia application systems have actively been developed based on the achievement of advanced high sped communication networks, computer processing technologies, and digital contents-handling technologies. Under this background, this paper proposed a new distributed multimedia database system which can effectively perform a new function of cooperative retrieval among distributed databases. The proposed system introduces a new concept of 'Retrieval manager' which functions as an intelligent controller so that the user can recognize a set of distributed databases as one logical database. The logical database dynamically generates and performs a preferred combination of retrieving parameters on the basis of both directory data and the system environment. Moreover, a concept of 'domain' is defined in the system as a managing unit of retrieval. The retrieval can effectively be performed by cooperation of processing among multiple domains. Communication language and protocols are also defined in the system. These are used in every action for communications in the system. A language interpreter in each machine translates a communication language into an internal language used in each machine. Using the language interpreter, internal processing, such internal modules as DBMS and user interface modules can freely be selected. A concept of 'content-set' is also introduced. A content-set is defined as a package of contents. Contents in the content-set are related to each other. The system handles a content-set as one object. The user terminal can effectively control the displaying of retrieved contents, referring to data indicating the relation of the contents in the content- set. In order to verify the function of the proposed system, a networked electronic museum was experimentally built. The results of this experiment indicate that the proposed system can effectively retrieve the objective contents under the control to a number of distributed domains. The result also indicate that the system can effectively work even if the system becomes large.

Proceedings Article | 28 December 1998 Paper

Object tracking and creation of linking information for distributed movie-based web-browsing system

Atsunobu Hiraiwa, Keisuke Fuse, Naohisa Komatsu, Kazumi Komiya, Hiroaki Ikeda

Proceedings Volume 3653, (1998) https://doi.org/10.1117/12.334723

KEYWORDS: Image segmentation, Detection and tracking algorithms, Image processing algorithms and systems, Video, Distributed computing, Image processing, Optical tracking, Feature extraction, Optical flow, Automatic tracking

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