5 Functionality
5.12.3
Troubleshooting using the LFSR
To control the quality of your complete imaging system enable the LFSR mode, set the camera
window to 1024 x 1024 pixels (x=0 and y=0) and check the histogram. The camera window can
also be set to a multiple of this resolution (e.g. 2048 x 2048 or 4096 x 3072) if the camera
model supports this resolution. If your image acquisition application does not provide a
real-time histogram, store the image and use an image viewing tool (e.g. ImageJ) to display
the histogram.
In the LFSR (linear feedback shift register) mode the camera generates a constant
pseudo-random test pattern containing all grey levels. If the data transmission is correctly
received, the histogram of the image will be flat (Fig. 5.40). On the other hand, a non-flat
histogram (Fig. 5.41) indicates problems, that may be caused either by a defective camera, by
problems in the acquisition software or in the transmission path.
Figure 5.40: LFSR test pattern received and typical histogram for error-free data transmission
Figure 5.41: LFSR test pattern received and histogram containing transmission errors
In robots applications, the stress that is applied to the camera cable is especially high due to
the fast movement of the robot arm. For such applications, special drag chain capable cables
are available. Please contact the Photonfocus Support for consulting expertise.
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Содержание MV1-D2048-3D06 series
Страница 1: ...Photonfocus MV1 D2048 3D06 Camera Series 3D CMOS camera with GigE interface MAN075 05 2017 V1 0...
Страница 10: ...1 Preface 10 of 127 MAN075 05 2017 V1 0...
Страница 12: ...2 Introduction 12 of 127 MAN075 05 2017 V1 0...
Страница 16: ...3 How to get started 3D GigE G2 Figure 3 3 PFInstaller components choice 16 of 127 MAN075 05 2017 V1 0...
Страница 26: ...3 How to get started 3D GigE G2 26 of 127 MAN075 05 2017 V1 0...
Страница 32: ...4 Product Specification 32 of 127 MAN075 05 2017 V1 0...
Страница 66: ...5 Functionality 66 of 127 MAN075 05 2017 V1 0...
Страница 82: ...6 Precautions 82 of 127 MAN075 05 2017 V1 0...
Страница 120: ...12 Support and Repair 120 of 127 MAN075 05 2017 V1 0...
Страница 122: ...13 References 122 of 127 MAN075 05 2017 V1 0...
Страница 127: ...C Revision History Revision Date Changes 1 0 May 2017 First version MAN075 05 2017 V1 0 127 of 127...