HD Analyzer
™ Chapter 3: Functioning
- 54 -
Figure 30. MTF Display
There are two representation methods for the MTF chart:
•
The linear representation (
Lineal
), selected by default when the MTF graph is
displayed for the first time, in which the MTF values are displayed in a linear
scale.
•
The logarithmic representation (
Log
), in which the MTF values are shown in
logarithmic scale, which allows a clearer appreciation of the cut-off frequency
(
MTF
cut-off).
This chart is displayed on the right side of the screen. By selecting a specific area
of the graph with the mouse cursor, you can zoom in on that section. The zoom is
increased starting from the top left, and decreases starting from the bottom right.
To export the MTF representation chart, double-click on the chart with the left side
of the mouse and specify the desired directory. You can either export it as an image
(
bmp
or
jpg
format), or directly save the graphic data to a text file (
txt
).
Содержание HD Analyzer OQAS
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Страница 81: ...HD Analyzer Chapter 3 Functioning 81 Figure 55 Example of a printed Light Condition report...
Страница 82: ...HD Analyzer Chapter 3 Functioning 82 Figure 56 Example of a printed Depth of Focus report...
Страница 83: ...HD Analyzer Chapter 3 Functioning 83 Figure 57 Example of a printed Tear Film report double pass images...
Страница 84: ...HD Analyzer Chapter 3 Functioning 84 Figure 58 Example of a printed Tear Film report sound patterns...
Страница 85: ...HD Analyzer Chapter 3 Functioning 85 Figure 59 Example of a printed pre operative Purkinje report...
