THORLABS DCU223x Operation Manual And Sdk page 84

DCx Cameras
3.4.2.5.5 Draw/Measure
The "Draw" menu contains functions drawing annotations as overlay on the live image.
Note
Setting the measuring unit
You can take simple measurements in uc480 Viewer. Before you start measuring, the camera must be calibrated
to a scale. The []/pixel unit indicates the actual distance that corresponds to one pixel. To set the measuring unit,
do the following:
1. Mount the camera on a stand. Place an object of known size below the camera (e.g. a ruler).
2. Make sure that the measuring unit is set to 1 at first. Then draw a dimension line over a known distance. The
longer you make the dimension line, the higher the measurement accuracy will be.
3. The dimension line will show the length in pixels. Divide the actual distance by the number of pixels measured.
Enter this value in the "Set measuring unit" field of the dialog box.
Example: Actual distance = 10 cm. Measured length in pixels = 200. Measuring unit = 10 cm/200 or 100 mm/200
Select Color
Geometry
Select line width
Circle
Show circles
New circle
Delete circles
Freehand
Show freehand lines
New freehand line
Delete freehand lines
Line
Show lines
New line
Delete lines
Rectangle
Show rectangles
New rectangle
Delete rectangles
Measure
Set measuring unit
Show measures
New measure
Delete measures
Text
Select font
Show texts
New text
Delete text
Time stamp
Set time stamp position
Show time stamp
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Select color for drawings and text
Set line width
Show/hide circles
Draw new circle
Delete circles
Show/hide freehand drawings
Draw new freehand
Delete freehand drawing
Show/hide lines
Draw new line
Delete lines
Show/hide rectangles
Draw new rectangle
Delete rectangles
Set scale
Show/hide dimension lines
Draw new dimension line
Delete all dimension lines
Select font
Show/hide texts
Write new text
Delete text
Time stamp position
(top left, top right, bottom left, bottom right)
Show/hide time stamp
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