Omron V440-F User Manual page 435

Appendices
Region of Interest (ROI)
When Image Dimensions is set to Region of Interest, the database image dimension parameters are
IP and decode settings, and they determine the region or area of the captured image to be processed.
ROI coordinate data is based on the full image size. The WOI of the captured image will be configured
to cover all the ROI settings in the current, active database entry. In the following example, there are three
active database settings, each with a different ROI configuration. Their coordinates are based at point 0,0
of the full scale image. In this example, DB1 and DB3 determine the size of the captured image WOI,
while DB2 has no impact. The image WOI is not configurable. It is automatically set up by the database
according to the ROI settings.
column
pointer
Full Image Size (QSXGA Reader: 2464 x 2048)
Note: Since the ROI parameters are not a reader setting, a change in ROI parameters from one index
to another does not indicate an image capture event.
This feature is intended to be used in conjunction with Image Process Looping, to allow different
regions of a captured image to be processed using different IP and decode settings.
Also, if this feature is used in conjunction with Output Filtering, multiple decoded symbols in a captured
image frame can be output according to their location in the field of view.
L-12
row
pointer
row
DB 1
size
IP ROI
column size
Reader WOI
DB 2
IP ROI
DB 3
IP ROI
V440-F C-Mount Code Reader User Manual