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Baumer SXC40 Руководство пользователя
8.1.4.

Look-Up-Table

The Look-Up-Table (LUT) is employed on Baumer monochrome cameras. It contains 2
(4096) values for the available levels of gray. These values can be adjusted by the user.
8.1.5.

Region of Interest (ROI)

With the ROI function it is possible to predefine a so-called Region of Interest (ROI). This 
ROI is an area of pixels of the sensor. On image acquisition, only the information of these 
pixels is sent to the PC. Therefore all the lines of the sensor need not be read out, which
decreases the readout time (t
This function is employed, when only a region of the field of view is of interest. It is coupled 
to a reduction in resolution.
The ROI is specified by four values:
▪  X 
- x-coordinate of the first relevant pixel
▪  Y 
- y-coordinate of the first relevant pixel
▪ Size X 
- horizontal size of the ROI
▪ Size Y 
- vertical size of the ROI

8.1.6. Partial Scan Readout

For  the  readout  of  the  ROI,  the  vertical  subdivision  of  the  sensor  (see  2.1.3.  Readout
Modes) is unimportant – only the horizontal subdivision is of note.
Both sensor halves are read out simultaneously as displayed in the subsequent figure.
The readout is line based, which means always a complete line of pixels needs to be read 
out and afterwards the irrelevant information is discarded.
Due to the fact, that the sensor halves are always read out symmetrically, the readout time 
t
 is significantly affected both by the size of the ROI and also by its position.
readout
). This increases the frame rate.
readout
Start ROI
End ROI
12
◄ Figure 19
Partial Scan:
Parameters of the ROI.
◄ Figure 20
Partial Scan: Readout.
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