Fig. 11

Flowchart of the compression techniques applied to the integration sub-cells in the fictitious domain approach. Depending on the different image-compression techniques such as run-length encoding (RLE), image-block representation (IBR) and minimum rectangular partition (MPR), auxiliary procedures including a transformation (T) from the local- to the pixel-space and a boundary tracing (BT) procedure need to be introduced. The methods that are used for a transition from the local- to the pixel-space and vice versa are indicated at the boundary marking the pixel-space. Note that the QTD is also essentially an image-compression technique, thus it can operate both in the pixel- and local-space. Therefore, it is also located on the boundary