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Biomedical subjects

B Fasel

Publications and source records attributed to B Fasel.

3 recordsLinked to original sources

An introduction to bio-inspired artificial neural network architectures.

In this introduction to artificial neural networks we attempt to give an overview of the most important types of neural networks employed in engineering and explain shortly how they operate and also how they relate to biological neural networks. The focus will mainly be on bio-inspired artificial neural network architectures and specifically to neo-perceptions. The latter belong to the family of convolutional neural networks. Their topology is somewhat similar to the one of the human visual cortex and they are based on receptive fields that allow, in combination with sub-sampling layers, for an improved robustness with regard to local spatial distortions. We demonstrate the application of artificial neural networks to face analysis--a domain we human beings are particularly good at, yet which poses great difficulties for digital computers running deterministic software programs.

Animals↗

Diagnostic image workstations for PACS.

Image workstations will be the 'window' to the complex infrastructure of a PACS with its intertwined image modalities (image sources, image data bases and image processing devices) and data processing modalities (patient data bases, departmental and hospital information systems). They will serve for user-to-system dialogues, image display and local processing of data as well as images. Their hardware and software structures have to be optimized towards an efficient throughput and processing of image data.

Hospital Information Systems↗

ImNet: a fibre optic LAN for digital image communication.

Data communication requirements in computer networks for medical diagnostics cannot be satisfied by existing LANs if digital images are involved because of the volumes of image data and the heterogeneity of data communication tasks. A user-oriented network behaviour requires a data transport rate which is beyond the physical bit rate of currently used LAN data channels. The key to an increased data transport efficiency is the separation of management data communication and image data communication. For the latter ImNet, a novel type of fibre optic network has been developed. Its hyperstar topology, its asynchronous data transport mechanism and its distributed network control make it particularly suited for PACS applications.

Computer Systems↗