Related Experiment Video
Updated: Aug 11, 2026

Modeling and Imaging 3-Dimensional Collective Cell Invasion
Published on: December 7, 2011
Image representation by complex cell responses
Ingo J Wundrich1, Christoph von der Malsburg, Rolf P Würtz
1Institut für Neuroinformatik, Ruhr-Universität Bochum, D-44780 Bochum, Germany. Ingo.Wundrich@neuroinformatik.ruhr-uni-bochum.de
Abstract:
We present an analysis of the representation of images as the magnitudes of their transform with complex-valued Gabor wavelets. Such a representation is a model for complex cells in the early stage of visual processing and of high technical usefulness for image understanding, because it makes the representation insensitive to small local shifts. We show that if the images are band limited and of zero mean, then reconstruction from the magnitudes is unique up to the sign for almost all images.
Related Concept Videos
Overview of Cell Signaling
Cells respond to many types of information, often through receptor proteins positioned on the membrane. For example, skin cells respond to and transmit touch...
Diversity in Cell Signaling Responses
Graded and Abrupt Responses
Some signaling systems generate...

