LORENC, T. Návrh adaptivního bezdrátového přenosu videa a dat [online]. Brno: Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií. 2023.
Diplomovou práci "Design of adaptive wireless video and data transmission" autora Bc. Tomáše Lorence hodnotím následovně: Technická kvalita a vhodnost použití metod: Práce je technicky kvalitně zpracovaná. Autor se zaměřil na adaptivní bezdrátový přenos videa a dat, což je velmi aktuální a relevantní téma. Použité metody, jako je například porovnání kodeků h264, h265 a VP8 (strana 52), jsou vhodné a přiměřené k danému tématu. Autor také podrobně popisuje metodologii měření, včetně měření latence, což svědčí o jeho technické zdatnosti a důkladnosti. Srozumitelnost textu a gramatické chyby: Text je srozumitelný a dobře strukturovaný. Autor se věnuje detailnímu popisu jednotlivých aspektů své práce, což čtenáři usnadňuje pochopení dané problematiky. V textu jsem nenašel žádné závažné gramatické chyby. Konzultace a reakce na připomínky vedoucího: Autor pravidelně konzultoval práci a reagoval na mé připomínky. Celkově hodnotím diplomovou práci jako kvalitní a dobře zpracovanou. Autor prokázal porozumění dané problematice a schopnost aplikovat teoretické poznatky v praxi.
The design of the adaptive wireless video and data transmission, diploma thesis by Mr Tomas Lorenc, utilizes the Nvidia Jetson low power coder/decoder development kit along with other off-the-shelf components to demonstrate capabilty of wireless portable device for a real time video streaming transmission from a camera to computer graphic user interface. Open source SW components have been chosen and integrated into a overall solution to enable parametric testing of various codecs over established video stream. Initial, theoretical section describes in depth various algorithms used in advacned video compression, concluding that some of those algorithms are also used in H.264 (AVC) and H.265 (HVEC) codecs of nowadays standard. Selection of the physical (IEEE 802.11 WiFi) as well transport/session (RTP) layer of the demostrated solution has been mentioned, however decision behind selection could have been further evaluated. Specifically stated ISM non licensed spectrum provides other viable short or long range communication means that can offer better portability (e.g IEEE 802.15 lower data rate radios) with lower power consumption. System integraton has been well described in chapter 2, including all codec parameters set at the for either a Constant or Variable Bit Rate testing. It is not clear if the wireless link was kept free of other communication during the testing that could possible influence the mesurements. I am very glad to see that Mr. Tomas Lorenc was able to integrate the overall portable wireless solution and subsequently was able to utilize it for - file encoding characterization, - subjective bit rate assesment, - real time test measuring latency and - codec effectiveness represented by the distance at which the codec maintains decode capability. Produced mesurement were well depicted although more analytical approach could be used to represent the measurement results.... e.g known object/text image processing techniques for various bitrates could have been used instead of subjective assessment, also the term waveform stability could have been better represented using e.g statistics. The diploma demostrates extensive work accomplished with application rahter than scientific approach. Further study suggestions and or inegrated device optimization for the low power / size / wieght could even further enhace the diploma conclusion. I specifically value the fact that the thesis was written in English. Overall score rating 80%.
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