The extraction of brain tissue from the scalp and skull was done by manual segmentation for each subject and time point.
Figures 3 and 4 present the regions resulted from manual segmentation and from the application of the three algorithms presented above for the images displayed in Figure 2. Figure 2 Images used in experiments.
Crown radii obtained from TreeVaW ranged from 0.59 to 0.71 m, lower than those from manual segmentation.
19 Prior to running SIENAX, T1 lesion masks were derived from manual segmentation of T1-visible white matter lesions on the 3D-IRSPGR using methods described previously.
In short, this consists of a manual segmentation of the LV from short-axis images at time of end-diastole (ED) and end-systole (ES) using freely available software (Segment).
At the resolution of 1 cubic millimeter its margins could not be smoothly segmented, and it was excluded from the manual segmentation.
While manual segmentation of the lung regions from CT scans takes around 60 to 90 min depending on the severity of the disease, the interactive lung segmentation takes only 16.52 s on average for approximately 250 slices.
The steps that have been followed are: Median filtering of the audiovisual confidence scores C AV, in order to obtain a smoother and coarse AV attention curve, followed by scene-based normalization (the boundaries of the scenes were extracted from the manual segmentation).
An example of mirror ROI from the manual segmentation is shown by the red circle generated automatically in Figure 3.
