| Functionality |
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Multiple Regions of Interest
FX-series cameras have the multiple MROI feature to reduce the number of pixels to be read from the detector. As a
result the maximum achievable frame rate can be increased. The multiple ROIs are joined together and form a single
image, which is transferred to the frame grabber.
Since the ROI feature is used for the image area on the sensor, the MROI feature is also used for setting a single ROI
in FX series.
MROI feature works differently in FX10/FX10e and FX17/FX17e:
• User sets wanted rows to be read and camera electronics “goes” straight to those rows in focal plane array and
reads them out.
• In FX17/FX17e MROI works differently. First MROI’s are configured. During reading out the image the camera
goes through all the rows from the first in the first MROI to last in last MROI and reads out only those that are
included in MROI configuration. Reading out only rows in MROI’s increases maximum frame rate but “checking”
other rows takes some time. Resulting maximum frame rate depends then
• On the total number of rows included in MROI’s but
• also the total number of rows within MROI outlining rectangle that are NOT included in MROI’s.
The number of MROI’s can be between 1 and 512. Binning must be disabled.
MROI in Lumo
In Lumo (SpecSensor SDK, Recorder or Scanner), start row index is relative row index inside of full image area (Full
frame is bigger). In FX10, start row and height of MROI can be any number between 0 and 447 (MROI total height
must be not bigger than 448). In FX17, Start row must be an even number between 0 and 222 and height of MROI
must be an even number between 2 and 224 (MROI total height must be not bigger than 224).
MROI in ASCII or GigEVision
In ASCII, GigEVision and FX configurator, the start row refers straight to “native” row indexes. In FX10 it can
be any number between Window.Y and Window.Y + 447. Height of MROI can be any number between 1 and 448
(MROI total height must be not bigger than 448). In FX17, the start row can be an even number between Window.Y
and Window.Y + 222 and the height of and MROI can be an even number between 2 and 224 (MROI total height
must be not bigger than 224).
MROI and AIE
There must be additional rows in the beginning and in the end of each MROI to prevent corruption of the intended
MROI rows. There needs to be three rows in FX10/FX10e and four rows in FX17/FX17e. These extra rows must then
be discarded in data processing as their data may be invalid.
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