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Digital camera technology for off-highway vehicles
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Signals and Systems Group.
2017 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Off-highway vehicles are on the verge of switching from analog to digital video camera technology (VCT), which offers better video quality and new features but adds complexity to the system. This thesis project aims to implement the digital VCT to the display computer CCpilot VA intended for off-highway vehicles. In this project the differences between analog and digital VCTs were reviewed and then a demo displaying a live digital camera video feed on the embedded Linux based display computer CCpilot VA was implemented with Qt and QML.

More specifically, different GStreamer pipelines were tested, as Qt uses GStreamer to play video, and camera settings were changed using the ISO 17215 standard.  The demo displayed a live digital camera video feed with high quality, low latency and high frame rate on the VA by using a GStreamer pipeline utilizing hardware decoding. The results have shown that digital video cameras perform better than analog cameras, primarily because digital cameras have better video quality. The attempts to simultaneously display a video feed and a Graphical User Interface created by Qt have been made. However, they were only successful with poor video performance. A zero-copy link between the GStreamer pipeline’s decoder and sink element must be used to obtain good video performance.

Place, publisher, year, edition, pages
2017. , p. 48
Series
UPTEC F, ISSN 1401-5757 ; 17010
Keyword [en]
Embedded Linux, Streaming video, Hardware acceleration, Digital camera, GStreamer, Embedded systems, Industrial PC display
National Category
Embedded Systems
Identifiers
URN: urn:nbn:se:uu:diva-317083OAI: oai:DiVA.org:uu-317083DiVA, id: diva2:1080342
External cooperation
CrossControl AB
Educational program
Master Programme in Engineering Physics
Supervisors
Examiners
Available from: 2017-03-10 Created: 2017-03-09 Last updated: 2017-03-10Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • ieee
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  • de-DE
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  • fi-FI
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Output format
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