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4 Functionality
4.3
Reduction of Image Size
With Photonfocus cameras 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).
4.3.1
Region of Interest (ROI)
Some applications do not need full image resolution (e.g. 1312 x 1082 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 (W) and height (H). Fig. 4.18, Fig. 4.19, Fig. 4.20 and Fig. 4.21 how
possible configurations for the region of interest, and Table 4.3 and Table 4.4 present
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.
The minimum width of the region of interest depends on the model of the MV1-
D1312(I) camera series. For more details please consult Table 4.5 and Table 4.6.
The minimum width must be positioned symmetrically towards the vertical cen-
ter line of the sensor as shown in Fig. 4.18, Fig. 4.19, Fig. 4.20 and Fig. 4.21). A
list of possible settings of the ROI for each camera model is given in Table 4.6.
³ 1 4 4
P i x e l
³ 1 4 4
P i x e l
³ 1 4 4
P i x e l
+ m o d u l o 3 2 P i x e l
³ 1 4 4
P i x e l + m o d u l o 3 2 P i x e l
a )
b )
Figure 4.18: Possible configuration of the region of interest for the MV1-D1312(I)-40 CMOS camera
✎
It is recommended to re-adjust the settings of the shading correction each time
a new region of interest is selected.
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Summary of Contents for CameraLink MV1-D1312 series
Page 1: ...User Manual MV1 D1312 I CameraLink Series CMOS Area Scan Camera MAN041 09 2010 V2 5...
Page 2: ......
Page 4: ...2...
Page 8: ...CONTENTS 6...
Page 14: ...2 How to get started CameraLink 12...
Page 24: ...3 Product Specification 22...
Page 72: ...4 Functionality Figure 4 56 Unsharp Mask Examples 70...
Page 110: ...8 Mechanical and Optical Considerations 108...
Page 112: ...9 Warranty 110...
Page 114: ...10 References 112...
Page 118: ...A Pinouts 116...