Generalized Image Acquisition and Analysis

Discovering the Structure of a Planar Mirror System from Multiple Observations of a Single Point

We investigate the problem of identifying the position of a viewer inside a room of planar mirrors with unknown geometry in conjunction with the room’s shape parameters. We consider the observations to consist of angularly resolved depth measurements of a single scene point that is being observed via many multi-bounce interactions with the specular room geometry. Applications of this problem statement include areas such as calibration, acoustic echo cancelation and time-of-flight imaging. We theoretically analyze the problem and derive sufficient conditions for a combination of convex room geometry, observer, and scene point to be reconstructable. The resulting constructive algorithm is exponential in nature and, therefore, not directly applicable to practical scenarios. To counter the situation, we propose theoretically devised geo- metric constraints that enable an efficient pruning of the solution space and develop a heuristic randomized search algorithm that uses these constraints to obtain an effective solution. We demon- strate the effectiveness of our algorithm on extensive simulations as well as in a challenging real-world calibration scenario.

Teaching

Introduction to Image Processing and Computer Vision

Lecture in winter term 2013/14

Lecturer: Ivo Ihrke

General Information

Course webpage - Libres Savoirs

When: 2014, Jan. 23rd to 2014, Apr. 10th
Where: IOA/IOGS buiding room E201
Registration for mailing list: send email to Ivo Ihrke (firstname[dot]lastname[at]inria.fr)

Overview:

This lecture covers basic image processing techniques in two dimensions. Special emphasis will be put on the origin of images, i.e. including detection and noise sources. Apart from that, the course will include both classic as well as more modern developments in the area.

The tentative course schedule is


Thursday 23.01.2014, 8am Introduction and Sensor Technology Overview [pdf sensors]
Thursday 31.01.2014, 8am Noise, Dynamic Range, and Color [pdf noise/dr/color]
Thursday 06.02.2014, 8am Compression and Signal Processing [pdf compression]
Thursday 13.02.2014, 8am Images as Functions [pdf functions]
Thursday 20.02.2014, 8am Distance Functions, Edge Detection and Convolutional/Non-Convolutional Filters [pdf filters]
Thursday 27.02.2014 vacances
Thursday 06.03.2014, 8am projet d'ingenieur
Thursday 13.03.2014, 8am Image Statistics, Histograms & Feature Detection [pdf stats & feature detection]
Thursday 20.03.2014, 8am cancelled
Wednesday 26.03.2014, 10am cancelled
Thursday 03.04.2014, 10am Feature Detection and Invariance [pdf feature description]
Thursday 10.04.2014, 10am Image Blending and Panoramas [pdf blending & panoramas]

FAQ:


Go back to lecture list



Imprint-Dataprotection