Chapter 10
Preparation for Using the Annotation Function and Measurement Function
94
Scale, Ann
ota
tion,
and Me
asur
ement
F
unctions
10
Preparation for Using the Scale, Annotation, and Measurement Functions
10.1
Before Use
With the DS-L4, the following functions can be used for images:
Displaying scales
A variety of scales can be displayed on a live image or playback image. The scales that can be displayed include a
scale bar, crossed scales, cross-hairs, grid, and bars for XY measurement. Use the [SCALE] menu to operate these
scales. Unlike annotations and measurement results, the user can select the types of scales to be embedded in image
files.
Adding annotations
You can add annotations to a live or playback image. The annotations that can be added include arbitrary text, straight
lines, arrows, free-hand lines, and markers (numbers). Use the [MEAS/DRAW] menu to perform measurement.
Measurement function
You can measure the approximate length, angle, and diameter of an object in a live or playback image. Use the
[MEAS/DRAW] menu to perform measurement.
10.1.1
Notes on Annotation and Measurement Functions
Notes on scale, annotation, and measurement functions
Note the following when you use the scale, annotation, and measurement functions.
Calibration:
Before you use annotation and measurement functions to measure an object, be sure to check the calibration
setting. The DS-L4 provides two calibration modes: OPTICAL and MANUAL. Select one of these calibration modes.
-
Normally, select OPTICAL. In this case, the measurement scale calculated from the magnification of the optical
device is applied.
-
Select MANUAL only when you want to perform measurement based on a specific measurement scale.
Switching of the calibration setting:
Switching of the calibration setting affects the annotation and measurement functions as follows:
-
For the scales (scale bar, crossed scales, cross-hairs, and bars for XY measurement), the values based on the
selected calibration mode are displayed.
-
For the measurement results, the values based on the selected calibration mode are displayed.
-
For the annotations, the displayed information does not change.
Annotations and measurement results for a playback image:
-
While you are viewing an image saved in TIFF or JPEG format, if you display a scale or perform measurement,
the unit and calibration settings that were specified when the image was saved are applied.
-
You cannot add annotations or perform measurement for the motion image that is being replayed. (You cannot
perform these operations even when you freeze the motion image.)
Precision:
Measurement of the DS-L4 is approximate. Precision cannot be guaranteed.
Electronic Zooming:
Although electronic zoom enlarges an image, it does not enlarge scales. When you swipe to move an enlarged
image, the displayed scales do not move together with the image.
Preparation for Using the Scale,
Annotation, and Measurement Functions
Chapter
10
