The potential application of the proposed 2D Gaussian function includes image enhancement, smoothing, edge detection, filtering etc.
Here the diffusion smooth function (g:[0,infty)longrightarrow[0,infty )) is important in controlling the smoothing and even enhancement of edges. They mainly considered the following two diffusion functions: g(s)=frac{1}{1+(frac{s}{K})^{2}} quad mbox{or} quad g(s)=e^{- frac{s}{K})^{2}}quad mbox{with }K>0.
There were significant differences between groups in tumor diameter, patterns of tumor enhancement, DMVD (edge-center), number of metastatic nodes, clinical stage, ER, PgR, Her2, Ki67, clinicopathological subtypes, chemotherapy, and endocrine therapy (P < 0.05) [Table 3].
There were significant differences in tumor diameter, patterns of tumor enhancement, DMVD (edge-center), grade of DMVD, histological grades, number of metastatic nodes, clinical stage, chemotherapy program, and in targeted therapy among the groups (P < 0.05) [Table 1].
Each tumor template is produced for a treatment course by cropping the GTV region, which is first enhanced by a Sobel filter for edge enhancement or by a blob structure enhancement (BSE) filter for tumor enhancement.
Edge enhancement is fundamental for any edge-based active contour and level set based segmentation method.
These arrays of spatial frequency filters (i.e., edge enhancement, high pass, Laplace, cross edge enhancement, vertical and low pass) suppress and emphasize structural appearance of topographic/geologically induced linear/curvilinear features.
Also, for the edge enhancement with noise suppression, we propose a new enhancement technique which restores the strength of edges that are smoothed by filtering and then adds the restored edges to the high band signal.
Atabany et al. developed a robust scene edge enhancement algorithm that focused on efficiently blurring the original image with anisotropic smoothing to obtain edge enhancement of only the major image edge boundaries while effectively ignoring minor detail edge occurrences [14].
bCoronal reformation, edge enhancement reconstruction algorithm.
