Movie Generation

 

By pressing the button (30-6), the Create Movie popup window (Figure 31) is displayed. Once all the movie parameters are specified, pressing the button (31-16) will generate the cine loop of image mosaics. An example is shown in Figure 32. Multiple movies can be generated, but the refresh rate diminishes as the number of movies running simultaneously is increased.

There are a number of option parameters that can be specified as follows:

1. The choice (31-1) allows for reslicing the image volumes along the cardinal axes. See Table 6 for the relationship between the orientations of the original volumes to those after reslicing. The combinations not found in Table 6 are non-standard orientations.
2. By setting the (31-2) and (31-3) fields, a spatial subset of the volume can be specified. Adjacent slices can be skipped by setting the the (31-4) field greater than one.
3. A temporal subset of the time range can be specified by setting the (31-5) and (31-6) fields. Time periods can be skipped by setting the the (31-7) field greater than one.
4. The dimensions of the slices in the movie mosaic can be resized by setting the the (31-8) and (31-9) fields. The resizing method is determined by the choice (31-12). The slice images can be buffered by setting the (31-10) field greater than zero.
5. There are three choices (31-13) for different types of cine loops. The ``Normal'' mode creates a cine loop using the image intensity values. The ``Diff'' mode creates a cine loop of the remainder of a subtraction from a reference image. The reference image is specified as a time index in the field (not shown). The ``Thres'' mode creates a cine loop that is black for image values below the field (not shown) value and white for image values above.
6. As in the Section 8, the (31-14) and (31-15) fields must specify a display range. Note that the display range is normally significantly smaller in the ``Diff'' mode.

  
Table 6: Movie Axis Reslice Orientations.

  
Figure 31: Movie Tool Create popup window.

  
Figure 32: Movie Screen popup window.