In order to set the reference slices, measure the dispersedness of each slice and select two consecutive slices with the lowest dispersedness.
Therefore, we used the dispersedness which can express the simplicity of the form in a numerical value to automatically select the reference slice.
Using dispersedness of initial segmentation results, two reference slices were selected, and then anchor points were set on the contour of initial segmentation region in the slices.
Theories concerning situational constraints lead to the expectation that perceived time pressure and geographical dispersedness of the task will also play an important role.
The second dimension of e-mail's perceived applicability, its perceived usefulness, is explained by the geographical dispersedness of a user's task, the extent to which a critical mass of users exists in his or her environment, e-mail's perceived ability to overcome limitations of time, and again, its perceived richness.
E-mail use is also explained by critical mass (if such a critical mass of users exists, it is used more), by the geographical dispersedness of a user's task, and by age--older persons use e-mail less than younger persons.