Search for dissertations about: "Youzhi Xu"

Showing result 1 - 5 of 6 swedish dissertations containing the words Youzhi Xu.

2. 1. Coding for Improved Perceived Quality of 2D and 3D Video over Heterogeneous Networks

   Author : Linda Sofia Karlsson; Mårten Sjöström; Youzhi Xu; Karsten Müller; Mittuniversitetet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Information technology; Informationsteknik;

   Abstract : The rapid development of video applications for TV, the internet and mobile phones is being taken one step further in 2010 with the introduction of stereo 3D TV. The 3D experience can be further improved using multiple views in the visualization. READ MORE

4. 2. Spatio-Temporal Pre-Processing Methods for Region-of-Interest Video Coding

   Author : Linda S. Karlsson; Tingting Zhang; Mårten Sjöström; Youzhi Xu; Apostolos Georgakis; Mittuniversitetet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Region-of-interest; video coding; pre-processing; spatio-temporal filters; Computer and systems science; Data- och systemvetenskap;

   Abstract : In video transmission at low bit rates the challenge is to compress the video with a minimal reduction of the percieved quality. The compression can be adapted to knowledge of which regions in the video sequence are of most interest to the viewer. READ MORE

5. 3. Synthesis, Coding, and Evaluation of 3D Images Based on Integral Imaging

   Author : Roger Olsson; Youzhi Xu; Mårten Sjöström; Tingting Zhang; Aljoscha Smolic; Mittuniversitetet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Integral Imaging; 3D images; coding; quality evaluation; H.264 AVC; JP3D; Telecommunication; Telekommunikation;

   Abstract : In recent years camera prototypes based on Integral Imaging (II) have emerged that are capable of capturing three-dimensional (3D) images. When being viewed on a 3D display, these II-pictures convey depth and content that realistically change perspective as the viewer changes the viewing position. READ MORE

6. 4. Traffic Analysis, Modeling and Their Applications in Energy-Constrained Wireless Sensor Networks : On Network Optimization and Anomaly Detection

   Author : Qinghua Wang; Tingting Zhang; Stefan Pettersson; Youzhi Xu; Yan Zhang; Mittuniversitetet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Wireless sensor network; traffic analysis; network optimization; anomaly detection; Computer and systems science; Data- och systemvetenskap;

   Abstract : Wireless sensor network (WSN) has emerged as a promising technology thanks to the recent advances in electronics, networking, and information processing. A wide range of WSN applications have been proposed such as habitat monitoring, environmental observations and forecasting systems, health monitoring, etc. READ MORE

7. 5. Design and Optimization of Wireless Remote Monitoring and Control System Using the ZigBee Protocol

   Author : Jingcheng Zhang; Qin-Zhong Ye; Youzhi Xu; Linköpings universitet; []
   Keywords : TECHNOLOGY; TEKNIKVETENSKAP;

   Abstract : This thesis presents the design and the optimization of a wireless remote monitoring and control system utilizing the ZigBee protocol.From the system architecture point of view, the remote wireless monitoring and control system is mainly combined by 3 parts, the wireless sensor network, the message gateway and the web service. READ MORE