Context-Based Separation of Cell Clusters for the Automatic Biocompatibility Testing of Implant Materials
Table 4
Schematic illustration of possible object shapes at a cell contact point.
Schema
Description
Case 1
The circular ring includes the cell region that separates the background pixels in two separate sets and (Figure 5). The circular ring includes two noncontiguous sets and . To allow object separating, has to return the value true for and and the additional conditions 1 and 2 must be met.
Case 2
There are two separated cell regions within . For further processing only the cell area is selected which contains the center of in its point set. As a result of this processing, this case is case type 3 from now on.
Case 3
There is a separated cell area within which does not enter the region of . This cell region will be ignored for further processing. As a result the case is type 1 from this point forward.
Case 4
contains a separated cell area, which is connected to , but not with other object areas. For all three subsets contained in , it is checked whether returns true and the conditions 1 and 2 are fulfilled. If at least two subsets remain in which fulfill the above-mentioned criteria; the separation takes place at this point. All subsets in , which do not satisfy the above-mentioned criteria, will be added as elements in so that the cell regions separated in error can be reunited with the neighboring object.
Case 5
Compared to case 4, there are one or more separate cell areas located within , which are connected to and other parts of in this case. It is determined for all subsets in whether returns true and conditions 1 and 2 are met. If at least two subsets in remain which fulfill the above-mentioned criteria, the separation takes place at this point. All subsets in which do not satisfy the above-mentioned criteria are stored as elements in similarly to Case 4 so that the cell regions separated in error can be reunited with the neighboring object.
