LSM 710 and LSM 780
TOOLS, ADDITIONAL SOFTWARE
Systems
3D for LSM
Carl Zeiss
02/2010 M60-1-0025
e
35
Segment - Automatic
The function carries out an automatic grey value segmentation by means of thresholding.
Fig. 25
The
Automatic
tab sheet of the
Segment
dialog window must be selected. Segmentation is especially
used to generate binary regions. These are required for the measurement.
The function calculates the two strongest local minimums in the histogram of the
Input
image sequence.
These values are used for the discrimination. Only one channel of a multichannel sequence can be
selected as
Input
.
Output
will always be a single channel sequence. The vertical scaling of the histogram
can be adjusted with the scroll bar at the right edge of the histogram. This setting has no influence on
the function.
The
Green
and
Blue/Red
option buttons of the parameter
Colour
determine whether the voxels within
(
Green
) or outside (
Blue/Red
) of the grey value interval [
L, H
] are displayed with the corresponding
colour.
If
Green
is selected, the voxels within the selected interval are highlighted in green. The rest of the image
retains its original grey values. The voxels with the grey values
L
ow and
L
ow+1 are displayed in blue. The
voxels with the grey values
H
igh and
H
igh-1 are displayed in red.
If
Blue/Red
is selected, the voxels with grey values within the interval
L
ow,
H
igh remain unchanged.
Voxels with grey values less than
L
ow are highlighted in blue; those with grey values higher than
H
igh
are highlighted in red.
If the
Invert
option is selected, the grey values outside the defined interval will be segmented.
If the option
Binary
is selected, then all grey values in the range from
L
ow to
H
igh will be set to white
(grey value 255 (4095)) in the
Output
image sequence, while all others will be set to black (grey value 0).
If the option is not selected, the grey values within the selected interval remain unchanged, while those
outside the range will be set to black.