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Related publications (148)

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A Model of Retinal Local Adaptation for the Tone Mapping of Color Filter Array Images

Sabine Süsstrunk, Laurence Meylan

We present a tone mapping algorithm that is derived from a model of retinal processing. Our approach has two major improvements over existing methods. First, tone mapping is applied directly on the mosaic image captured by the sensor, analogue to the human ...

2007

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

Assessing human skin color from uncalibrated images

Sabine Süsstrunk, Joanna Marguier

Images of a scene captured with multiple cameras will have different color values due to variations in color rendering across devices. We present a method to accurately retrieve color information from uncalibrated images taken under uncontrolled lighting c ...

2007

HDR CFA Image Rendering

Sabine Süsstrunk, Laurence Meylan

We propose a method for high dynamic range (HDR) mapping that is directly applied on the color filter array (CFA) image instead of the already demosaiced image. This rendering is closer to retinal processing where an image is acquired by a mosaic of cones ...

2006

Vision-based Altitude and Pitch Estimation for Ultra-light Indoor Aircraft

Dario Floreano, Jean-Christophe Zufferey, Claudio Mattiussi, Antoine Beyeler

Autonomous control of ultra-light indoor microflyers is a difficult and largely unsolved task because of the strong limitations on the kind of sensors that can be embedded. We propose a new approach for altitude control of a 10-gram microflyer, where altit ...

2006

High Dynamic Range Image Rendering Using a Retinex-Based Adaptive Filter

Sabine Süsstrunk, Laurence Meylan

We propose a new method to render high dynamic range images that models global and local adaptation of the human visual system. Our method is based on the center-surround Retinex model. The novelties of our method is first to use an adaptive surround, whos ...

Institute of Electrical and Electronics Engineers2006

Linear demosaicing inspired by the human visual system

Sabine Süsstrunk

There is an analogy between single-chip color cameras and the human visual system in that these two systems acquire only one limited wavelength sensitivity band per spatial location. We have exploited this analogy, defining a model that characterizes a one ...

2005

On Local Features for Face Verification

{W}e compare four local feature extraction techniques for the task of face verification, namely (ordered in terms of complexity): raw pixels, raw pixels with mean removal, 2D Discrete Cosine Transform (DCT) and local Principal Component Analysis (PCA). The ...

IDIAP2004

Spatio-chromatic ICA of a Mosaiced Color Image

Sabine Süsstrunk

We analyze whether Independant Component Analysis (ICA) is an appropriate tool for estimating spatial information in spatiochromatic mosaiced color images. In previous studies, ICA analysis of natural color scenes (Hoyer et al. 2000; Tailor et al., 2000; W ...

2004

Spatio-chromatic PCA of a mosaiced color image

Sabine Süsstrunk

In this paper, we analyze whether Principal Component Analysis (PCA) is an appropriate tool for estimating spatial information in spatio- chromatic mosaiced images. Ruderman et al. 1 have shown that the spatio- chromatic principal components of cone images ...

2004