Common Vision Blox with TurboDrive

Transcription

1 Common Vision Blox Application Note Common Vision Blox with TurboDrive Version 1.0 from 21/07/2016 Author: Heike Gast, Arno Dietz For TELEDYNE DALSA GigE cameras with TurboDrive Teledyne Dalsa has introduced the unique patent-pending TurboDrive technology allowing data rates beyond the GigE Vision limit. Users of STEMMER IMAGING s Common Vision Blox (CVB) software library are provided with the latest TurboDrive version in the most recent software release. This Application Note describes the usage of TurboDrive with Common Vision Blox. EMMER - IM AG ING.COM HEAD OFFICE STEMMER IMAGING GmbH Phone: STEMMER IMAGING is Europe s largest Gutenbergstraße 9-13 Fax: independent supplier of vision technology and services Puchheim, Germany info@stemmer-imaging.de

2 Copyright Copyright 2016 STEMMER IMAGING GmbH, Puchheim. All rights reserved and subject to change. STEMMER IMAGING, Common Vision Blox, Windows, Visual Basic, Visual C++, C++Builder, Visual Studio.net, Visual C#, Delphi are registered trademarks. All rights to this manual are the property of STEMMER IMAGING GmbH, Puchheim/Germany. It may not be reproduced or copied in printed, electronic or photographic form or translated into another language, either in whole or in part, without the written agreement of STEMMER IMAGING GmbH. O M M O N V I S I O N B L O X. C O M W W W. S T E M M E R - I M A G I N G. C O M

3 Content Content 1. Introduction Supported Models Configuration for using TurboDrive in CVB CVB TurboDrive Technology Demo TELEDYNE DALSA TurboDrive Performance Tool Contact and Feedback O M M O N V I S I O N B L O X. C O M W W W. S T E M M E R - I M A G I N G. C O M

4 1. Introduction According to the specification, the Ethernet based GigE Vision interface allows data transfer rates of up to 100 Megabytes per second. However, current industrial cameras often generate much larger data volumes due to the ever-increasing resolutions and speeds. Users who have been working with the GigE Vision interface so far, have reached the limit of the GigE Vision bandwidth and had to adjust their systems to faster interfaces such as CameraLink or CoaXPress. These interfaces, however, cannot guarantee a safe data transmission, quite contrary to GigE Vision, offering integrated Packet Resend functionality. Moreover, CameraLink and CoaXPress interfaces require an additional acquisition card and cable lengths are limited when using CameraLink. Thanks to the TurboDrive technology, the image data can be transferred for processing at rates exceeding the constraints of Gigabit Ethernet. This increases the effective throughput (between 120% and 235% of normal bandwidth) in typical vision applications without losing the data transmission reliability of GigE Vision. This is enabled by TurboDrive s advanced data encoding techniques, that look at the redundancy in the data coming out of the sensor. It uses image entropy based encoding to model pixel information with no loss of information. This allows faster data transmission on the link as each pixel is comprised of fewer bits for encoding. The latest versions of STEMMER IMAGING s Common Vision Blox (CVB) programming library and the corresponding CameraSuite have already integrated drivers which support the TurboDrive technology. All mentioned Software in this document can be downloaded at the Stemmer Imaging s website or the Common Vision Blox homepage: O M M O N V I S I O N B L O X. C O M Page 4

5 2. Supported Models The current GigE models of Teledyne Dalsa s Genie Nano and Linea camera series are already designed for the use of TurboDrive. Thus, users will now experience all the benefits of the proven Ethernet interface with extra high data volumes. An example comparison of transfer rates using TurboDrive to standard mode is in following table: O M M O N V I S I O N B L O X. C O M Page 5

6 3. Configuration for using TurboDrive in CVB Configure the GigE network card and camera performance settings first (refer CVB GenICam User Guide). No further hardware or software changes to your network or application are necessary. Use the CVB GenICam Browser from at least CVB The feature has to be enabled and saved in the Configured Devices -> Device Options (results in GenICam.ini file entry). Enable Use Turbo Drive option always together with the cameras listed under supported models! O M M O N V I S I O N B L O X. C O M Page 6

7 4. CVB TurboDrive Technology Demo This optional tool can be used to demonstrate the TurboDrive functionality: the demonstration program checks on startup if TurboDrive is enabled in the Genicam.ini file and if not, asks to enable it, compression factor is dependent on image content: o Images with a lot of details (e.g. much image noise) = low compression, o Images with few details (large areas with similar pixel values) = high compression, Network Bandwidth = compressed data rate, Image Data Rate = uncompressed data rate, CPU workload with TurboDrive + ~5-10%, right click on the image -> zoom mode can be changed to 1:1, demonstration program uses camera on port 0. Current released version is for mono cameras. Version with color cameras will be available in the end of this year and later also in CVB. Careful! Framerate can be set to maximum framerate, even if TurboDrive is disabled and the data rate is higher than the GigE limit of ~100 MB/sec. O M M O N V I S I O N B L O X. C O M Page 7

8 5. TELEDYNE DALSA TurboDrive Performance Tool This optional tool can be used to calculate the estimated additional throughput based on the size of one example image and the mathematical model of TurboDrive. O M M O N V I S I O N B L O X. C O M Page 8

9 Contact 6. Contact and Feedback We hope that these notes were useful for you and look forward to your feedback. In case of further questions, please do not hesitate to contact our technical support. Additional information and a lot of valuable details regarding image processing, can also be found on our website. DENM ARK Phone: support@stemmer-imaging.dk Web: FINLAND BALTICS Phone: support@stemmer-imaging.fi Web: FRANCE Phone: support@stemmer-imaging.fr Web: GERM ANY AUSTRIA Phone: support@stemmer-imaging.de Web: POLAND SWEDEN NORW AY ICELAND Phone: support@stemmer-imaging.se Web: SWITZERLAND LIECHTENSTEIN Phone: support@stemmer-imaging.ch Web: THE NETHERLANDS BELGIUM LUXEMBOURG Phone: support@stemmer-imaging.nl Web: UNITED KINGDOM IRELAND Phone: support@stemmer-imaging.co.uk Web: Phone: support@stemmer-imaging.pl Web: O M M O N V I S I O N B L O X. C O M W W W. S T E M M E R - I M A G I N G. C O M