Person

Michael Ansorge

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Related publications (12)

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A comparative study of color image compression standards using perceptually driven quality metrics

Touradj Ebrahimi, Francesca De Simone, Frédéric Dufaux, Michael Ansorge

The task of comparing the performance of different codecs is strictly related to the research in the field of objective quality metrics. Even if several objective quality metrics have been proposed in literature, the lack of standardization in the field of ...

SPIE2008

Error Resiliency of Distributed Video Coding in Wireless Video Communication

Touradj Ebrahimi, Frédéric Dufaux, Mourad Ouaret, Michael Ansorge

Distributed Video Coding (DVC) is a new paradigm in video coding, based on the Slepian-Wolf and Wyner-Ziv theorems. DVC offers a number of potential advantages: flexible partitioning of the complexity between the encoder and decoder, robustness to channel ...

SPIE2008

A multi-channel objective model for the Full-Reference assessment of color pictures

Touradj Ebrahimi, Francesca De Simone, Michael Ansorge

This paper presents a new approach for the design of a full reference objective quality metric for the assessment of color pictures. Our goal is to build a multi-channel metric based on the perceptual weighting of single-channel metrics. A psycho-visual ex ...

2008

Microcamera Embedded in a Wristwatch

Pierre-André Farine, Steve Tanner, Michael Ansorge, Patrick Stadelmann

The presentation reports upon the conception and realization of a miniature very low-power microcamera system that has been embedded in a wristwatch so as to enable the spontaneous capture of photographs in everyday life based on timekeeping devices the us ...

2007

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In this paper, we review the on-going JPSearch standardization activity. Its goal is to provide a standard for interoperability for image search and retrieval systems. More specifically, JPSearch aims at defining the interfaces and protocols for data excha ...

2007

A Low-Jitter and Low-Power CMOS PLL for Clock Multiplication

Pierre-André Farine, Steve Tanner, Michael Ansorge, Kilian Imfeld

this paper describes a phase-locked loop (PLL) designed for clock multiplication in a LVDS transmitter. The PLL consists of a novel low-jitter charge-pump, a fully differential ring-oscillator based VCO, a dynamic-logic PFD, a 2nd order passive loop filter ...

2006

Content Understanding for Smart Multimedia Systems

Michael Ansorge

The paper is presenting a core idea of the research line, dedicated to tools and utilities for a more friendly information access. In order to make future multimedia systems smarter, new mechanisms for high-level data and user understanding need to be embe ...

2005

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Since the sixties, movies such as “2001: A Space Odyssey” have familiarized us with the idea of com-puters that can speak and hear just as a human being does. Automatic speech recogni-tion (ASR) is the technol-ogy that allows machines to interpret human sp ...

2005

Efficient Compressed Domain Target Image Search and Retrieval

Pierre-André Farine, Michael Ansorge

In this paper we introduce a low complexity and accurate technique for target image search and retrieval. This method, which oper- ates directly in the compressed JPEG domain, addresses two of the CBIR challenges stated by The Benchathlon Network regarding ...

2005

A Fast Recursive Implementation of Gabor Filters

Michael Ansorge

This paper presents two methods, based on the rational approximation of functions, for designing Gabor like IIR filters with reduced computational complexity. The performance of the designed filters is discussed and comparisons with other approaches are ma ...

2005