Photon Focus MV1-D2080(IE) Series, User Manual, Page: 46 / 119

4 Functionality
ROI Dimension [Standard] MV1-D2080(IE)-160-G2
2080 x 2080 (full resolution) 25 fps
1920 x 1080 (Full HD) 52 fps
1280 x 1024 (SXGA) 70 fps
1280 x 768 (WXGA) 93 fps
800 x 600 (SVGA) 79 fps
640 x 480 (VGA) 119 fps
2080 x 1024 50 fps
2080 x 512 101 fps
2080 x 256 202 fps
2080 x 128 405 fps
2080 x 64 811 fps
2080 x 32 1539 fps
2080 x 16 2317 fps
Table 4.3: Frame rates of different ROI settings that can be achieved in continuous readout (minimal
exposure time; correction on, 8 bit data resolution).
4.3.3 Multiple Regions of Interest
The MV1-D2080(IE) camera series can handle up to 512 different regions of interest. This
feature can be used to reduce the image data and increase the frame rate. An application
example for using multiple regions of interest (MROI) is a laser triangulation system with
several laser lines. The multiple ROIs are joined together and form a single image, which is
transferred to the frame grabber.
An individual MROI region is defined by its starting value in y-direction and its height. The
starting value in horizontal direction and the width is the same for all MROI regions and is
defined by the ROI settings. The maximum frame rate in MROI mode depends on the number
of rows and columns being read out. Overlapping ROIs are allowed. See Section 4.3.2 for
information on the calculation of the maximum frame rate.
Fig. 4.18 compares ROI and MROI: the setups (visualized on the image sensor area) are
displayed in the upper half of the drawing. The lower half shows the dimensions of the
resulting image. On the left-hand side an example of ROI is shown and on the right-hand side
an example of MROI. It can be readily seen that resulting image with MROI is smaller than the
resulting image with ROI only and the former will result in an increase in image frame rate.
Fig. 4.19 shows another MROI drawing illustrating the effect of MROI on the image content.
Fig. 4.20 shows an example from hyperspectral imaging where the presence of spectral lines at
known regions need to be inspected. By using MROI only a 656x54 region need to be readout
and a frame rate of 1050 fps can be achieved. Without using MROI the resulting frame rate
would be 40 fps for a 656x1800 ROI.
.
44