Microscan Quadrus EZ, Руководство пользователя, Страница: 215 / 366

Quadrus EZ Reader User’s Manual
9-7
Camera Setup
Line Scan
1. From the Evaluation tab, click the Line Scan button.
The window shown below appears.
Hint: When the Histogram window opens, you might need to expand the window
and/or adjust the scroll bars in order to bring the image into view.
2. Drag your mouse pointer across the
image, horizontally.
It will create a dashed horizontal line. Pixel
information and a visual representation of
the dark and light pixels will be displayed
below the image.
When you center your cursor over the dashed
line, it becomes a double arrow cross. This will
allow you to move this line anywhere in the
window. You can also use your keyboard
arrows to move this line incrementally in any
direction.
As with the histogram, the line scan compares
light and dark pixels, but in a spacial distribution.
On the Y axis of the graph, 0 is black and 255 is
white; the X axis represents the horizontal axis
of the symbol as described by the line scan.
When you click anywhere on the graph, a vertical
red line appears at that point and its position
and value (in terms of black to white) are updated in the Pixel Info table to the left of the
graph, in this case 237. In addition, a horizontal, dashed red line is displayed that indicates
the average value.
Line Scan