BOBCAT Hardware User’s Manual
Imperx, Inc.
Rev. 1.0
6421 Congress Ave.
5/4/2010
Boca Raton, FL 33487
+1 (561) 989-0006
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2.12 TEST IMAGE PATTERNS
2.12.1 Test Image patterns
The camera can output several test images, which can be used to verify the
camera’s general performance and connectivity to the frame grabber. This ensures
that all the major modules in the hardware are working properly and that the
connection between the frame grabber and the camera is synchronized – i.e., the
image frameing, output mode, communication rate, etc. are properly configured.
Please note that the test image patterns do not exercise and verify the CCD’s
functionality.
The following test images are available:
-
Black
– displays
black image (value x0000
-
Gray
– displays an uniform dark gray image (value x2000)
-
White
– displays an uniform white image (value 3FFF)
-
H Ramp Still
– displays a stationary horizontal ramp image
-
V Ramp Still
– displays a stationary vertical ramp image
-
H Ramp Move
– displays a moving horizontal ramp image
-
V Ramp Move
– displays a moving vertical ramp image
-
Vertical Bars
– displays a set of 8 vertical gray bars with different gray levels.
2.12.2 Image Superimposition
The user has the capabilities to superimpose over a live image the following test
patterns. The user can change the brightness of the superimposed image from black
(invisible) to white.
Image superimposition is not available during H & V binning.
-
“
Crosshair
” – Crosshair watermark (2 pixels/ 2 lines thickness) indicating the
absolute image center of the image.
-
“
H & V Lines
” – A pair of Horizontal and Vertical lines can be positioned in
the image. The user can enable the lines in horizontal, vertical or both
directions, and to position them at any pixel/line in the image.
Since the H & V
lines can be used as a measuring tool, the pixel and line positions are referenced
to the CCD pixels and lines, not to the image pixels and lines
. The spacing
between the lines can be displayed in:
1.
Pixels
- Natively, the spacing between the lines is shown in pixels
2.
Metrical units
- In addition, the user can use these lines as a measuring
tool. The user can apply a scale coefficient and thus, to calculate the spacing
in linear measuring units (micrometers, millimeters or meters).
