LSM 710 and LSM 780
CENTER SCREEN AREA / IMAGE CONTAINERS - …
Systems Topography
View
Carl
Zeiss
02/2010 M60-1-0025
e
207
The
Topography view
contains the following
image view
control blocks:
Display
Set 2D or 3D, kind of generation, thresholds, filters and fits
3D
Set options of different 3D views.
Measure
Includes all measurement functionality, like profiles, roughness etc.
3D Measurement
Includes additional measurement functionality for 3D views.
Series
Includes different kinds of series generation.
6.12.1
Control Block: Display
•
Select
2D
(
Height map
,
Maximum intensity
) or
3D
.
−
In case of Height map and Maximum intensity and ticked Iso-lines check box two additional values
can be changed:
Distance
:
Changes the distance of the Iso-lines.
Offset
:
Setting of the height level where the Iso-Lines display starts.
•
Additional settings for 3D are chosen in the 3D-block
•
Define the kind of topography generation.
•
These views can also be exported as image. Height maps can be exported as lsm-file and later opened
by ZEN and used as a topo image. As raw data will be not saved in this kind of export changes of
topography as described below can almost not be made any more.
Maximum
•
Click on the
Maximum
button to calculate the topography surface by finding the maximum intensity
value. If the optical section with the highest intensity value is found, the intensity values of both
neighboring slices are also taken into account, so that a 3 point maximum fit is calculated.
•
In case it happens, that the maximum possible intensity value is present in more than one optical slice
for a given pixel (saturation), the mid section of all saturated intensity slices is chosen as a reasonable
approach.
Center
•
Click on the
Center
button to calculate the topography surface by using the center of gravity of all
summed up intensities of the stack for a given xy print.
This mode provides better result for smooth surfaces of low intensity or nearly transparent
surfaces. The receiver gain and offset has to be properly tuned and
MarkFirst
- /
MarkLast
-
positions of the stack should be located approximately in the same distance from the real
surface.