Omron V440-F, User Manual

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K-3
Appendices
V440-F C-Mount Code Reader User Manual
K
-2 Wind
ow
of
Inte
res
t
K
K-
2-1 Window of I
nterest by Serial C
ommand
K-2 Window of Interest
The active pixel area of the image sensor is called the
Window of Interest
(WOI). The WOI allows the
user to select an area of the field of view in which the desired symbol is located.
The programmable window of interest increases decode speed, improves threshold, and makes it easy
to select specific symbols from among several in the field of view. The user provides the upper-left pixel
location and the size of the window in rows and columns to define the Window of Interest.
The figure shows where to locate the start position of the row and column pointers and how to measure
the column depth and row width dimensions.
K-2-1 Window of Interest by Serial Command
Row Pointer
Definition:
Defines the row position of the upper-left starting point of the image window.
Serial Cmd:
<
K516, row pointer ,column pointer,row depth,column width
>
Default: All models: 0
Options: V440-F

50C QSXGA:
0 to (2048 – row depth)
Column Pointer
Definition:
Defines the column position of the upper-left starting point of the image window.
Serial Cmd:
<
K516, row pointer, column pointer ,row depth,column width
>
Default: All models: 0
Options: V440-F

50C QSXGA:
0 to (2464 – column width)
WOI Column
Pointer
WOI Row Pointer
WOI Column Width
WOI Row Depth
Note:
The names of K commands, parameters, and
options are occasionally different from the names of
commands, parameters, and options in the WebLink
user interface. For example, the terms in the diagram
shown at left correspond to the values
Top
,
Left
,
Height
, and
Width
in the WebLink user interface.