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Video Capture and Compression on Embedded Devices
Dušek, Oto ; Chlubna, Tomáš (referee) ; Bařina, David (advisor)
Industrial cameras are often used in conjunction with the application of machine learning. However, these cameras produce large bitrate and it needs to be reduced when processing video further away from the camera. This thesis tries to solve the problem by design of system suitable for grabbing video from industrial cameras, its compression and distribution to machine learning application. The thesis describes technologies applicable to the development of the multimedia application. For example frameworks FFmpeg and GStreamer were used implementation of the system.
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Laboratory workplace for virtual reality
Budáč, Adam ; Polák, Ladislav (referee) ; Kufa, Jan (advisor)
This bachelor’s thesis is about creation of laboratory workplace for virtual reality. In theoretical part, it’s analysis of various types of devices for use in VR, description of operation principle of these devices used in VR, analysis of modern coding algorithms suitable for use in VR, suitable use of these codecs for 2D, 3D a 360° multimedia content, options of obtaining and playback of this content, comparing the difference against classical displaying methods and quality measurement of this content using objective metrics at different qualities and compressions. In experimental part, there’s described database creation of video content, coding these video sequencies using objective metrics, creation of laboratory workplace for use with VR, creation and sample elaboration of laboratory task dedicated to virtual reality.
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Operator's station for Perseus mobile robot
Sabó, Marek ; Jílek, Tomáš (referee) ; Burian, František (advisor)
This thesis deals with the design and implementation of application for control of mobile robot. In the introductory section is discussed used platform GEARS-SMP, the principle of functionality of protocol for servo motors control, format M-JPEG and standard H.264. Further work is dedicated to analysis of designing user interface in robotic applications, available options for control devices and hardware used in remote controller. The following part focuses on the design of robotic application, especially on graphic user interface and virtual head-up display and follow-up implementation of created application in Raspberry Pi. In the end, thesis describes implemented software solution and compares resulting application with the created design.
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Video mixer/translator for web-based videoconference system
Hutar, Jan ; Balík, Miroslav (referee) ; Číka, Petr (advisor)
Bachelor s thesis specialises in a basic description, comparing and processing of video standards H.264 and VP8 in real time. Particularly it concerns a support of videoconfe- rence systems working with those mutually incompatible standards. The work enquires and tests two most considerable software devices convenient with basic requirements for working with video in real time and available with LGLP licence respectively FFmpeg and GStreamer. The thesis suggests practice video mix implementation of data input and the way of code translation into required outgoing stream. FFmpeg tool has been used for realization and message of mixer/translator and simple interface has been established available from web browser with assistance of HTML, PHP and Javascript.
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Platform for subjective evaluation of video-sequences
Srnec, Tomáš ; Kiska, Tomáš (referee) ; Číka, Petr (advisor)
This bachelor thesis is focused on subjective video quality assessment. Used modern codecs such as H.264, H.265, VP8 and VP9 are described in first chapter. In the next part of the thesis, four methods of the subjective video assessment are being called, according to Recommendation ITU-T P.910. The practical part includes encoding of three videos, into four resolutions, for four codecs. Output of the thesis is JavaFX application, capable of playing used videos for participants of test, who are making judgment. Their results are real-time sent to MySQL server and directly in application evaluated into bar charts. According to our results, the best codec is VP9, before codec H.265, H.264 and VP8.
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Embedded Vision System on NVIDIA platform
Krivoklatský, Filip ; Arm, Jakub (referee) ; Bradáč, Zdeněk (advisor)
This diploma thesis deals with design of embedded computer vision system and transfer of existing computer vision application for 3D object detection from Windows OS to designed embedded system with Linux OS. Thesis focuses on design of communication interface for system control and camera video transfer through local network with video compression. Then, detection algorithm is enhanced by transferring computationally expensive functions to GPU using CUDA technology. Finally, a user application with graphical interface is designed for system control on Windows platform.
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Implementing a Video Quality Metric in the H.264/AVC Decoder
Grúbel, Michal ; Číka, Petr (referee) ; Slanina, Martin (advisor)
In this diploma thesis an algorithm for the evaluation of picture quality of H.264-coded video sequences is introduced and applied. As a measure of picture quality objective metric the peak signal to noise ratio (PSNR) is used. While the computation of the PSNR usually requires a reference signal and compares it to the distorted video sequence, this algorithm is able to evaluate PSNR following the coded transform coefficients. Thus, no reference signal is needed.
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Laboratory workplace for virtual reality
Budáč, Adam ; Polák, Ladislav (referee) ; Kufa, Jan (advisor)
This bachelor’s thesis is about creation of laboratory workplace for virtual reality. In theoretical part, it’s analysis of various types of devices for use in VR, description of operation principle of these devices used in VR, analysis of modern coding algorithms suitable for use in VR, suitable use of these codecs for 2D, 3D a 360° multimedia content, options of obtaining and playback of this content, comparing the difference against classical displaying methods and quality measurement of this content using objective metrics at different qualities and compressions. In experimental part, there’s described database creation of video content, coding these video sequencies using objective metrics, creation of laboratory workplace for use with VR, creation and sample elaboration of laboratory task dedicated to virtual reality.
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4K real-time video encoding using NVENC technology
Buchta, Martin ; Přinosil, Jiří (referee) ; Kříž, Petr (advisor)
Diploma thesis is focused on real-time 4K video encoding using NVENC technology. First chapter describes the most used video codecs H.264 and HEVC. There is an explanation of the principle of graphic cards and their programmable units. Analysis of the solution of open source Video Codec SDK is also part of the thesis. The main focus of the thesis is an implementation of an application which can handle 4K video encoding from multiple cameras in real time. Performance and qualitative tests were performed for application. Results of these tests were analyzed and discussed.
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Video Capture and Compression on Embedded Devices
Dušek, Oto ; Chlubna, Tomáš (referee) ; Bařina, David (advisor)
Industrial cameras are often used in conjunction with the application of machine learning. However, these cameras produce large bitrate and it needs to be reduced when processing video further away from the camera. This thesis tries to solve the problem by design of system suitable for grabbing video from industrial cameras, its compression and distribution to machine learning application. The thesis describes technologies applicable to the development of the multimedia application. For example frameworks FFmpeg and GStreamer were used implementation of the system.
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