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

Christian Kueblbeck

Andreas Ernst

Tobias Ruf

Anton Papst

Felix Lautenschlager

Joem Thielecke

Bernhard Froeba

Apparatus for determining model parameters, the apparatus comprising an object model transformer, a region comparator, and a model parameter determiner. The object model transformer is configured to receive an object model of a known object and to transform the object model based on a set of model parameters from a first frame of reference to a second frame of reference, and is further configured to determine as result of this transformation a transformed object model comprising at least one region that is associated to an object region of the object. The region comparator is configured to receive the transformed object model and an image depicting the object, to determine for a selected region of the transformed object model a region-related similarity measure. The model parameter determiner is configured to determine an updated set of model parameters on the basis of the region-related similarity measure and an optimization scheme.

Determining model parameters based on transforming a model of an object

A physically demarcated body part is recognized and located using only a relatively small amount of computation, but with a sufficient degree of recognition accuracy. For this purpose a procedure is proposed for detecting physically demarcated body parts (face, hand, leg) of a person's image () if a body part () as depicted in front of a background (). Borderlines () in the image are only evaluated along line directions (') to determine, by comparing with model (), whether the body part image corresponds to a type of body part given by the model. In addition, line directions (&#x2032;) inside a body part image and borderline directions () of a physically demarcated body part are used to locate and store its position.

Evaluation of edge direction information

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Erlangen, Germany

Christian Kueblbeck