Photon Focus OEM-D1024E, User Manual

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4 Functionality
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)
Figure 4.32: Corrected image
minimum maximum
Offset correction -508 DN @ 12 bit +508 DN @ 12 bit
Gain correction 0.42 2.67
Table 4.3: Offset and gain correction ranges
4.6 Reduction of Image Size
With Photonfocus camera modules there are several possibilities to focus on the interesting
parts of an image, thus reducing the data rate and increasing the frame rate. The most
commonly used feature is Region of Interest (ROI).
4.6.1 Region of Interest (ROI)
Some applications do not need full image resolution (e.g. 1024x1024 pixels). By reducing the
image size to a certain region of interest (ROI), the frame rate can be drastically increased. A
region of interest can be almost any rectangular window and is specified by its position within
the full frame and its width and height. Fig. 4.33 gives some possible configurations for a
region of interest, and Table 4.4 shows some numerical examples of how the frame rate can be
increased by reducing the ROI.
Both reductions in x- and y-direction result in a higher frame rate.
a )
b ) c ) d )
Figure 4.33: ROI configuration examples
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