Generalized Image Acquisition and Analysis

Sensor Saturation in Fourier Multiplexed Imaging

Optically multiplexed image acquisition techniques have become increasingly popular for encoding different exposures, color channels, light-fields, and other properties of light onto two-dimensional image sensors. Recently, Fourier-based multiplexing and reconstruction approaches have been introduced in order to achieve a superior light transmission of the employed modulators and better signal-to-noise characteristics of the reconstructed data. We show in this paper that Fourier-based reconstruction approaches suffer from severe artifacts in the case of sensor saturation, i.e. when the dynamic range of the scene exceeds the capabilities of the image sensor. We analyze the problem, and propose a novel combined optical light modulation and computational reconstruction method that not only suppresses such artifacts, but also allows us to recover a wider dynamic range than existing image-space multiplexing approaches.

Teaching

Computational Optical Imaging

Lecture in winter term 2013/14

Lecturer: Ivo Ihrke

General Information

Course webpage - Libres Savoirs -->

When: 2013, Sept. 09th to 2013, Oct. 28th
Where: IOA/IOGS buiding room F102
Registration for mailing list: send email to Ivo Ihrke (firstname[dot]lastname[at]inria.fr)

Overview:

This lecture covers advanced digital imaging techniques for image correction and calibration, as well as algorithms and optical considerations for the extraction of three-dimensional content from (sets of) images. We explore the notion of computional-optical codesign and modern high-dimensional imaging techniques.

The tentative course schedule is


Tuesday 10.09.2013 Introduction and Sensor Technology [pdf intro] [pdf sensors]
Thursday 12.09.2013 Noise, Dynamic Range, and Color [pdf noise/dr/color]
Monday 16.09.2013 Imaging Imperfections, Panoramas and the Basics of 3D [pdf panoramas&3D]
Monday 23.09.2013 Camera Calibration and Feature Detection [pdf calibration&features]
Monday 30.09.2013 Stereo and Self-Calibration [pdf stereo&self-calibration]
Thursday 03.10.2013 Active 3D Scanning [pdf active light 3D]
Monday 07.10.2013 Tomography [pdf tomography]
Monday 14.10.2013 Deconvolution [pdf deconvolution]
Monday 21.10.2013 Light Fields [pdf light fields]
Thursday 24.10.2013 Introduction to Variational Image Processing (original slides by Bastian Goldluecke) [pdf intro] [pdf variational analysis] [pdf gradient descent]

FAQ:


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