Real‐time adaptive ultrasonic imaging

Adaptive Realtime Terrain Triangulation

A system for realtime terrain triangulation is presented which allows fully user controllable and smooth level of detail transitions. To accomplish this as well as to ooer the possibility of data compression, the terrain elevation data is hierarchically interpolated. The interpolation error, the so called hierarchical surplus, is used as a criterion to detect redundant data and serves as a way ...

Realtime Online Adaptive Gesture Recognition

We introduce an online adaptive algorithm for learning gesture models. By learning gesture models in an online fashion, the gesture recognition process is made more robust, and the need to train on a large training ensemble is obviated. Hidden Markov models are used to represent the spatial and temporal structure of the gesture. The usual outputprobabilitydistributions— typically representing a...

An adaptive speckle suppression filter for medical ultrasonic imaging

An adaptive smoothing technique for speckle suppression in medical B-scan ultrasonic imaging is presented. The technique is based on filtering with appropriately shaped and sized local kernels. For each image pixel, a filtering kernel, which fits to the local homogeneous region containing the processed pixel, is obtained through a local statistics based region growing technique. The performance...

Adaptive Dispersion Compensation and Ultrasonic Imaging for Structural Health Monitoring

Ultrasonic Imaging

The basic principles of ultrasonic B-mode imaging aresummarized. Tissue features that generate contrast andsystem features that control image quality are reviewed inthe context of breast cancer imaging. Approaches to signalmodeling, including B-mode and Doppler techniques, arereviewed to guide methodological design and clinical eval-uation. The article concludes with a b...