Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Technische Universitat Ilmenau

Albrecht Hess

Daniel Krenzer

Andreas Ernst

Peter Husar

András Kátai

Tobias Ruf

Christian Wiede

Paul Fritzsche

Anja Chilian

Matthias Pauligk

Michael HÄNSEL

Joachim Tilgner

Johannes-Wolf KÜNZEL

Tamás Harczos

A Hough processor comprises a pre-processor and a Hough transformation unit. The pre-processor is configured to receive a plurality of samples respectively comprising an image and in order to rotate or reflect the image of the respective sample. The Hough transformation unit is configured to collect a predetermined searched pattern in the plurality of samples on the basis of a plurality of versions. The Hough transformation unit comprises a characteristic being dependent on the searched pattern, which is adjustable according to the searched pattern.

Hough processor

A 3D image analyzer for the determination of a gaze direction or a line of sight (having a gaze direction vector and a location vector, which e.g. indicates the pupil midpoint and where the gaze direction vector starts) in a 3D room is configured to receive one first set of image data and a further set of image information, wherein the first image contains a pattern, which displays a three-dimensional object from a first perspective into a first image plane, and wherein the further set contains an image having a pattern, which displays the same three-dimensional object from a further perspective into a further image plane, or wherein the further set has an image information and/or a relation between at least two points in the first image and/or at least a position information. The 3D image analyzer has a position calculator and an alignment calculator and calculates therewith a gaze direction in a 3D room.

3D image analyzer for determining the gaze direction

A 2D image analyzer includes an image scaler, an image generator and a pattern finder. The image scaler is configured to scale an image according to a scaling factor. The image generator is configured to produce an overview image including a plurality of copies of the received and scaled image, wherein every copy is scaled about a different scaling factor. Thereby, the respective position can be calculable by an algorithm, which considers a gap between the scaled images in the overview image, a gap of the scaled image towards one or more borders of the overview image and/or other predefined conditions. The pattern finder is configured to perform a feature transformation and classification of the overview image in order to output a position at which an accordance of the searched pattern and the predetermined pattern is maximal. A post-processing unit for smoothening and correcting the position of local maxima in the classified overview image may also be provided.

2D image analyzer

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Schoenbrunn, Germany

Albrecht Hess