Linea HS Series Camera User's Manual Camera Features • 35
Using Area of Interest (AOIs)
Reduce Image Data & Enhance Performance
See the section Image Format Control Category and Acquisition and Transfer Control Category in
Appendix A for GenICam features associated with this section and how to use them
Related Features: multipleROICount, multipleROISelector, multipleROIOffsetX, multipleROIWidth,
AcquisitionStart, AcquisitionStop and AcquisitionStatus
If the module’s field of view includes areas that are not needed for inspection (also refer to the
description in the Flat Field Calibration Region of Interest section) then the user may want to
ignore this superfluous image data.
Eliminating unwanted image data that is visible in the module’s field of view reduces the amount of
information the host computer needs to process. This may also result in an increase to the
maximum allowable line rate due to CLHS bandwidth limits when using 12-bit output data.
The module section can accommodate up to four AOIs. Image data outside the AOIs is discarded.
Each AOI is user selected and its pixel boundaries defined. The module assembles the individual
AOI’s into one contiguous image line with a width equal to the sum of the individual AOIs. The
frame grabber will need to be adjusted to accommodate the smaller overall image width. As the
host computer defined the size of each individual AOI, it will be able to extract and process each
individual AOI from the single larger image.
Note: Since each module section is effectively a separate CLHS connection with it’s own
controls, four AOI’s are available for each section i.e. A 400mm module has one section but
an 800mm module has two sections.
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