Elastic edge sequence matching method for global extraction and local tracking of echocardiogram

In order to stabilize the results of model-based dynamic image tracking, global extraction for the initial frame and key frames, and local tracking for successive frames are performed. By introducing each coordinate system for each model evaluation point into the conventional dynamic programming matching method, a constraint by a window for local tracking, and a coarse-to-fine mechanism for high-speed extraction of the global solution can be given in a unified manner. For the problem of time difference between high-speed local tracking and time-consuming global search, we introduce a time delay for the input image for the tracking in order not to make the control complex. Some experimental results for echocardiograms are given