The initial localization of artery is important and must precede the main measurement.
Initial localization of disease-related loci has traditionally been performed using family-based linkage methods to scan the genome.
Once the network architecture has been trained using these initial localization data, it is used to recognize roads in all the next frames.
The initial localization of suspicious breast lesions was performed by computing difference images, i.e., subtracting the image data of the first from the fourth acquisition.
This initial localization step is followed by a shape correction method based on PCA subspace projection and elimination of false positives.
In particular, the time reversal technique is used for efficient initial localization of the target and the level set method is used for shape reconstruction.
Finally, a distance-regularized level set method, which not only considers the probability change in a nearby pixel but also regularizes the contour smoothness, is applied to refine the initial localization by simply thresholding on the enhanced probability map.
In particular, the rapidly growing emphasis on the analysis of the genetic basis of quantitative correlates of disease risk represents a novel and promising approach in which initial localization is performed using linkage and subsequent identification utilizes association approaches in positional candidate genes.
Finally, a distance-regularized level set (DRLS) method [8], which not only considers the probability change in a nearby pixel but also regularizes the contour smoothness, is applied to refine the initial localization by simply thresholding on the enhanced probability map.
Because the reconstruction procedure is independently carried out in each individual reconstruction cell after an initial localization process, an adaptive reconstruction procedure can be easily implemented to increase the accuracy while at the same time significantly decreasing the computational time required to perform the reconstruction.
Initial localization to Chr. 9 was based on a genome-wide scan for linkage using Mit markers.
