To show the sequence properties in the Property Panel, select the sequence in the Object Explorer as shown in Figure 1. The Property Panel displays the set of properties of the sequence, as illustrated in Figure 2.
Selection of the sequence in the Object Explorer.
Property Panel displaying sequence properties.
This property shows the number of slices in the sequence.
defines the distance between consecutive slices in
the sequence. This distance is the same for all slices and is specified in the
unit of measure defined by the Unit of Measure property that is also available
from the Property Panel. The unit of measure also appears abbreviated ( um
in the example of Figure 2) next to the literal “Distance b/slices”
in the Property Panel. To change this property, simply click on its current
value to edit it. Insert the new value and press Enter.
This property and the pixel size define the aspect ratio of the 3D models.
Thus, incorrect values of any of these properties may result in deformed 3D
reconstructions and incorrect 3D measures (volume and surface area).
Changing this property does not automatically change the 3D models, but all the
affected objects are marked with the icon
meaning that the object needs to be updated.
properties show the size of the slices in pixels,
which delimits the work area of slice views
(for registration and contour detection). BioVis3D selects default values for
these properties when you create a sequence
based on the images size, but, as you move
the slices to align them, it may be necessary to extend this area (see Figure 3).
To change them, simply click on its current value to edit it. Insert
the new value and press Enter. Alternatively, change the slice
width and height by dragging the edges with the mouse similarly as resizing a
Effect of changing the Slice Width and Slice Height properties.
The modification of these properties impacts all the slices of the sequence.
BioVis3d uses this unit to present all the measures that it calculates such as contour perimeters, and object volumes. To change the unit of measure, select a new value from the combo box.
Selection of a unit of measure.
Changing this property does not affect neither the 3D models nor the contours
shows the size of the pixel used in the sequence
as a pair of numbers that defines the size in the horizontal and vertical
directions respectively. The sequence pixel size is used as the default value
for new slices added to the sequence. If all images
in the sequence have the same pixel size, they can all be modified in one
single operation by editting the sequence pixel size.
To edit this
property, make sure no slice is open, otherwise, a message asking for closing all slice views appears. Then click on the Calc button that appears once clicking on
the value of the property (see Figure 5).
Changing the pixel size.
This opens a
dialog box to change the pixel size shown in Figure 6.
Sequence pixel size edition.
If the pixel size is known, select a unit of measure and set the vaues in the fields
Pixel Size (X), and Pixel Size (Y). Otherwise, click
Load from image to obtain the pixel size from an image that
contains an object of known size. See Obtaining
the pixel size from an image, for specific instructions.
the dialog box is confirmed, BioVis3D automatically sets the pixel size of all images in
the sequence to have the same value as the sequence pixel size.
There is no undo option for this operation.