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Hiroki Ito - IEEE Xplore Author Profile

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Author details

Hiroki Ito

Also published under: H. Ito

Publications

17

Citations

149

Publications by Year

19972023

Co-Authors:

R. G. AscheJ. BallardS. BillingsY. CorrodiH. Digard

Show All Co-Authors (47)

Hiroki Ito

Also published under: H. Ito

Affiliation

Energy & Industrial System Group

Mitsubishi Electric Corporation

Tokyo, Japan

Publication Topics

Circuit Breaker,
Current Gaps,
Current Injection,
System Voltage,
Current Behavior,
Current Strategies,
Dc Circuit Breakers,
Fault Location,
High Voltage,
Hybrid Power,
Power Electronics,
Power System

Biography

Hiroki Ito (M'11) joined Mitsubishi Electric Corporation, Tokyo, Japan, involved in the research and development of high-voltage dc and ac gas circuit breakers and as the Director of High Voltage and High Power Laboratories. He was Convenor of CIGRE Working Group A3.22 and Working Group A3.28. Currently, he is the Chairman of CIGRE Study Committee A3: High Voltage Equipment.,Mr. Ito is a member of the Current Zero Club.(Based on document published on 10 July 2014).

Publications

17

Citations

149

Publications by Year

19972023

Co-Authors:

R. G. Asche
J. Ballard
S. Billings
Y. Corrodi
H. Digard

Show All Co-Authors (47)

Author's Published Works

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Showing 1-18 of 18 results

Conferences (13)

Journals (3)

Magazines (2)

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Single Year
A.H. Tewfik(18)
M.D. Swanson(17)
Bin Zhu(6)
B. Zhu(4)
B. Chau(2)
Department of Electrical Engineering, University of Minnesota, Minneapolis, MN, USA(7)
Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, USA(6)
University of Minnesota, Minneapolis, MN, US(2)
Texas Instruments, Inc., Dallas, TX, USA(1)
Cogency Technology, Inc., Edina, MN, USA(1)
Proceedings of International Conference on Image Processing(4)
1996 IEEE Digital Signal Processing Workshop Proceedings(2)
IEEE Signal Processing Magazine(2)
Proceedings of 3rd IEEE International Conference on Image Processing(2)
1996 IEEE International Conference on Acoustics, Speech, and Signal Processing Conference Proceedings(1)
IEEE(18)
Santa Barbara, CA, USA(4)
Lausanne, Switzerland(2)
Loen, Norway(2)
Atlanta, GA, USA(1)
Austin, TX, USA(1)
Wavelet Transform(9)
Least Significant Bit(8)
Digital Watermarking(7)
Bitrate(6)
Digital Video(6)

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When seeing isn't believing [multimedia authentication technologies]

B.B. Zhu;M.D. Swanson;A.H. Tewfik

IEEE Signal Processing Magazine

Year: 2004 | Volume: 21, Issue: 2 | Magazine Article |

Cited by: Papers (134) | Patents (1)

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Digital multimedia is ubiquitous today. Multimedia is easily reproduced and modified without any trace of manipulations. In most cases, a human will not be able to judge whether a multimedia signal is authentic by perceptual inspection. In this article we provide a compact yet fairly comprehensive introduction of multimedia authentication (MA) to the general signal processing audience. The article...Show More

When seeing isn't believing [multimedia authentication technologies]

B.B. Zhu;M.D. Swanson;A.H. Tewfik

IEEE Signal Processing Magazine

Year: 2004 | Volume: 21, Issue: 2 | Magazine Article |

Current state of the art, challenges and future directions for audio watermarking

M.D. Swanson;Bin Zhu;A.H. Tewfik

Proceedings IEEE International Conference on Multimedia Computing and Systems

Year: 1999 | Conference Paper |

Cited by: Papers (32) | Patents (8)

Transparent data embedding algorithms embed binary streams in host multimedia signals. The embedded data is perceptually inaudible to maintain the quality of the source data. The embedded data can add features to the host multimedia signal or provide copyright protection. We review developments and requirements in transparent data embedding techniques for audio signals. We describe our latest audi...Show More

Current state of the art, challenges and future directions for audio watermarking

M.D. Swanson;Bin Zhu;A.H. Tewfik

Proceedings IEEE International Conference on Multimedia Computing and Systems

Year: 1999 | Volume: 1 | Conference Paper |

Data embedding in audio: where do we stand

A.H. Tewfik;M.D. Swanson;B. Zhu

1999 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings. ICASSP99 (Cat. No.99CH36258)

Year: 1999 | Conference Paper |

Cited by: Papers (3)

Summary form only given. Data embedding algorithms embed binary streams in host multimedia signals. The embedded data can add features to the host multimedia signal or provide copyright protection. We review requirements for transparent data embedding techniques in audio signals. We describe and contrast current approaches to data embedding in audio. In particular, we emphasize the advantages and ...Show More

Data embedding in audio: where do we stand

A.H. Tewfik;M.D. Swanson;B. Zhu

1999 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings. ICASSP99 (Cat. No.99CH36258)

Year: 1999 | Volume: 4 | Conference Paper |

Multimedia data-embedding and watermarking technologies

M.D. Swanson;M. Kobayashi;A.H. Tewfik

Proceedings of the IEEE

Year: 1998 | Volume: 86, Issue: 6 | Journal Article |

Cited by: Papers (641) | Patents (38)

We review developments in transparent data embedding and watermarking for audio, image, and video. Data-embedding and watermarking algorithms embed text, binary streams, audio, image, or video in a host audio, image, or video signal. The embedded data are perceptually inaudible or invisible to maintain the quality of the source data. The embedded data can add features to the host multimedia signal...Show More

Multimedia data-embedding and watermarking technologies

M.D. Swanson;M. Kobayashi;A.H. Tewfik

Proceedings of the IEEE

Year: 1998 | Volume: 86, Issue: 6 | Journal Article |

Multiresolution scene-based video watermarking using perceptual models

M.D. Swanson;Bin Zhu;A.H. Tewfik

IEEE Journal on Selected Areas in Communications

Year: 1998 | Volume: 16, Issue: 4 | Journal Article |

Cited by: Papers (232) | Patents (44)

We present a watermarking procedure to embed copyright protection into digital video. Our watermarking procedure is scene-based and video dependent. It directly exploits spatial masking, frequency masking, and temporal properties to embed an invisible and robust watermark. The watermark consists of static and dynamic temporal components that are generated from a temporal wavelet transform of the v...Show More

Multiresolution scene-based video watermarking using perceptual models

M.D. Swanson;Bin Zhu;A.H. Tewfik

IEEE Journal on Selected Areas in Communications

Year: 1998 | Volume: 16, Issue: 4 | Journal Article |

Data hiding for multimedia personalization, interaction, and protection

A.H. Tewfik;M. Swanson

IEEE Signal Processing Magazine

Year: 1997 | Volume: 14, Issue: 4 | Magazine Article |

Cited by: Papers (35) | Patents (1)

The advantages of digital media have opened up many new possibilities to hide data (information) within audio, image and video files. In order to provide copyright protection digital watermarking has been proposed as a means of identifying the owner or distributor of digital data. Data hiding and watermarking research builds on ideas and concepts developed in cryptography, communications theory, a...Show More

Data hiding for multimedia personalization, interaction, and protection

A.H. Tewfik;M. Swanson

IEEE Signal Processing Magazine

Year: 1997 | Volume: 14, Issue: 4 | Magazine Article |

Object-based transparent video watermarking

M.D. Swanson;B. Zhu;B. Chau;A.H. Tewfik

Proceedings of First Signal Processing Society Workshop on Multimedia Signal Processing

Year: 1997 | Conference Paper |

Cited by: Papers (39) | Patents (52)

We present a watermarking procedure to embed copyright protection into video sequences. To address issues associated with video motion and redundancy, individual watermarks are created for objects within the video. Each watermark is created by shaping an author and video dependent pseudo-random sequence according to the perceptual masking characteristics of the video. As a result, the watermark ad...Show More

Object-based transparent video watermarking

M.D. Swanson;B. Zhu;B. Chau;A.H. Tewfik

Proceedings of First Signal Processing Society Workshop on Multimedia Signal Processing

Year: 1997 | Conference Paper |

Affine-invariant multiresolution image retrieval using B-splines

M.D. Swanson;A.H. Tewfik

Proceedings of International Conference on Image Processing

Year: 1997 | Conference Paper |

Cited by: Papers (2)

We propose a technique to search through large image collections. Each database image is stored as a combination of potential query terms (i.e., objects, texture regions, etc.) and non-query terms. The query terms are represented by affine-invariant B-spline moments and wavelet transform subbands. The dual representation supports a two-stage image retrieval system. A user-posed query is first mapp...Show More

Affine-invariant multiresolution image retrieval using B-splines

M.D. Swanson;A.H. Tewfik

Proceedings of International Conference on Image Processing

Year: 1997 | Volume: 2 | Conference Paper |

Image coding by folding

Bin Zhu;M.D. Swanson;A.H. Tewfik

Proceedings of International Conference on Image Processing

Year: 1997 | Conference Paper |

Cited by: Patents (8)

We propose an image coding algorithm which employs data hiding techniques to "fold" an image into itself. Data hiding is a process of encoding extra information into a host image by making small modifications to its pixels. In our approach, an image is split into two parts of equal size: a host image and a residual image. The residual image is compressed into a bit stream and then embedded into th...Show More

Image coding by folding

Bin Zhu;M.D. Swanson;A.H. Tewfik

Proceedings of International Conference on Image Processing

Year: 1997 | Volume: 2 | Conference Paper |

Data hiding for video-in-video

M.D. Swanson;Bin Zhu;A.H. Tewfik

Proceedings of International Conference on Image Processing

Year: 1997 | Conference Paper |

Cited by: Papers (72) | Patents (26)

We introduce a scheme for hiding high bit-rate supplementary data, such as secondary video, into a digital video stream by directly modifying the pixels in the video frames. The technique requires no separate channel or bit interleaving to transmit the extra information. The data is invisibly embedded using a perception-based projection and quantization algorithm. The data hiding algorithm support...Show More

Data hiding for video-in-video

M.D. Swanson;Bin Zhu;A.H. Tewfik

Proceedings of International Conference on Image Processing

Year: 1997 | Volume: 2 | Conference Paper |

Multiresolution video watermarking using perceptual models and scene segmentation

M.D. Swanson;Bin Zhu;B. Chau;A.H. Tewfik

Proceedings of International Conference on Image Processing

Year: 1997 | Conference Paper |

Cited by: Papers (27) | Patents (56)

We introduce a watermarking procedure to embed copyright protection into digital video. Our video dependent watermarking procedure directly exploits the masking and temporal properties to embed an invisible and robust watermark. The watermark consists of static and dynamic temporal components that are generated from a temporal wavelet transform of the video scenes. To generate the watermark, the r...Show More

Multiresolution video watermarking using perceptual models and scene segmentation

M.D. Swanson;Bin Zhu;B. Chau;A.H. Tewfik

Proceedings of International Conference on Image Processing

Year: 1997 | Volume: 2 | Conference Paper |

Embedded object dictionaries for image database browsing and searching

M.D. Swanson;A.H. Tewfik

Proceedings of 3rd IEEE International Conference on Image Processing

Year: 1996 | Conference Paper |

Cited by: Papers (5)

We describe a technique to encode images for content-based access and retrieval. Potential query terms are first extracted from an image and represented in terms of multiresolution subbands. A vector quantizer structure then maps the subbands of each image object onto a set of embedded dictionaries. An algorithm is used to exploit the occurrence and query probabilities of the objects for efficient...Show More

Embedded object dictionaries for image database browsing and searching

M.D. Swanson;A.H. Tewfik

Proceedings of 3rd IEEE International Conference on Image Processing

Year: 1996 | Volume: 3 | Conference Paper |

Transparent robust image watermarking

M.D. Swanson;Bin Zhu;A.H. Tewfik

Proceedings of 3rd IEEE International Conference on Image Processing

Year: 1996 | Conference Paper |

Cited by: Papers (187) | Patents (125)

We propose a watermarking scheme to hide copyright information in an image. The scheme employs visual masking to guarantee that the embedded watermark is invisible and to maximize the robustness of the hidden data. The watermark is constructed for arbitrary image blocks by filtering a pseudo-noise sequence (author id) with a filter that approximates the frequency masking characteristics of the vis...Show More

Transparent robust image watermarking

M.D. Swanson;Bin Zhu;A.H. Tewfik

Proceedings of 3rd IEEE International Conference on Image Processing

Year: 1996 | Volume: 3 | Conference Paper |

Robust data hiding for images

M.D. Swanson;B. Zhu;A.H. Tewfik

1996 IEEE Digital Signal Processing Workshop Proceedings

Year: 1996 | Conference Paper |

Cited by: Papers (62) | Patents (108)

Data hiding is the process of encoding extra information in an image by making small modifications to its pixels. To be practical, the hidden data must be perceptually invisible yet robust to common signal processing operations. This paper introduces two schemes for hiding data in images. The techniques exploit perceptual masking properties to embed the data in an invisible manner. The first metho...Show More

Robust data hiding for images

M.D. Swanson;B. Zhu;A.H. Tewfik

1996 IEEE Digital Signal Processing Workshop Proceedings

Year: 1996 | Conference Paper |

Transparent robust authentication and distortion measurement technique for images

B. Zhu;M.D. Swanson;A.H. Tewfik

1996 IEEE Digital Signal Processing Workshop Proceedings

Year: 1996 | Conference Paper |

Cited by: Papers (10) | Patents (7)

We propose a novel scheme to embed an invisible signature into an image to check image integrity and measure its distortion. The technique is based on the pseudo-noise sequences and visual masking effects. The values of an image are modified by a pseudo-noise signature which is shaped by the perceptual thresholds from masking effects. The method is robust and can gauge errors accurately up to half...Show More

Transparent robust authentication and distortion measurement technique for images

B. Zhu;M.D. Swanson;A.H. Tewfik

1996 IEEE Digital Signal Processing Workshop Proceedings

Year: 1996 | Conference Paper |

A binary wavelet decomposition of binary images

M.D. Swanson;A.H. Tewfik

IEEE Transactions on Image Processing

Year: 1996 | Volume: 5, Issue: 12 | Journal Article |

Cited by: Papers (73) | Patents (7)

We construct a theory of binary wavelet decompositions of finite binary images. The new binary wavelet transform uses simple module-2 operations. It shares many of the important characteristics of the real wavelet transform. In particular, it yields an output similar to the thresholded output of a real wavelet transform operating on the underlying binary image. We begin by introducing a new binary...Show More

A binary wavelet decomposition of binary images

M.D. Swanson;A.H. Tewfik

IEEE Transactions on Image Processing

Year: 1996 | Volume: 5, Issue: 12 | Journal Article |

CODING FOR CONTENT-BASED RETRIEVAL

M.D. Swanson;S. Hosur;A.H. Tewfik

1996 IEEE International Conference on Acoustics, Speech, and Signal Processing Conference Proceedings

Year: 1996 | Conference Paper |

Cited by: Papers (1) | Patents (2)

First Page of the Article

CODING FOR CONTENT-BASED RETRIEVAL

M.D. Swanson;S. Hosur;A.H. Tewfik

1996 IEEE International Conference on Acoustics, Speech, and Signal Processing Conference Proceedings

Year: 1996 | Volume: 4 | Conference Paper |

Wavelet decomposition of binary finite images

M.D. Swanson;A.H. Tewfik

Proceedings of 1st International Conference on Image Processing

Year: 1994 | Conference Paper |

Cited by: Papers (1) | Patents (5)

Constructs a theory of wavelet decompositions of binary images. The construction defines binary valued wavelets and scaling functions and their associated spectral properties. The authors begin by introducing a new binary field transform and the corresponding concept of sequence spectra over GF(2). Using this transform, a theory of binary wavelets is then developed in terms of 2-band perfect recon...Show More

Wavelet decomposition of binary finite images

M.D. Swanson;A.H. Tewfik

Proceedings of 1st International Conference on Image Processing

Year: 1994 | Volume: 1 | Conference Paper |

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