Zusammenfassung
Kurzzusammenfassung:
This work deals with affine motion-compensated prediction (MCP) in video coding. Using the rate-distortion theory and the displacement estimation error caused by inaccurate motion parameter estimation, the minimum bit rate for encoding the prediction error is derived. Similarly, a 4-parameter simplified affine model as considered for the upcoming video coding standard VVC is analyzed. Both models provide valuable information about the minimum bit rate for encoding the prediction error as a function of the motion estimation accuracy.
Although the bit rate in MCP can be reduced by using a motion model capable of describing the motion in the scene, the total video bit rate may remain high. Thus, a codec independent coding system is proposed for aerial videos, which exploits the planarity of such sequences. Only new emerging areas and moving objects in each frame are encoded. From these, the decoder reconstructs a mosaic, from which video frames are extracted again. Th...
Schlagworte
video coding affine motion-compensated prediction (MCP) simplified affine motion-compensated prediction rate-distortion theory aerial surveillance region of interest (ROI-) based video coding global motion compensation (GMC) moving object detection long-term mosaicking radial distortion compensation- 1–10 1 Introduction 1–10
- 11–36 2 Basics 11–36
- 87–116 5 Experiments 87–116
- 133–152 Bibliography 133–152
8 Treffer gefunden
- „... by a combination of motioncompensated prediction (MCP), transform coding with quantization, both ...” „... ]. ¿e usage of DPCM (the closed back-loop in the center of Fig. 1.1) ensures that the prediction, i. e ...” „... most o en used lossy coding schemes, the remaining pixel-wise prediction error is 2 1 Introduction ...”
- „... 10 Analysis of Affine Motion-Compensated Prediction and its Application in Aerial Video ...” „... Prediction and its Application in Aerial Video Coding Von der Fakultät für Elektrotechnik und Informatik der ...” „... Analysis of Affine Motion-Compensated Prediction and its Application in Aerial Video Coding Dipl ...”
- „... the overall data rate of an encoded video stream in hybrid video coding is caused by the prediction ...” „... error [60]. ¿us, Bernd Girod modeled the minimum required bit rate for encoding the prediction error as ...” „... chapter an e ciency analysis of motion-compensated prediction is performed for a fully a ne model with six ...”
- „... 117 6 Summary and Conclusions Motion-compensated prediction is one key element in modern hybrid ...” „... motion-compensated prediction in video coding was analyzed. ¿e minimum bit rate required for encoding the prediction ...” „... for a ne motion-compensated prediction in video coding has been derived in Chapter 3. ¿e derivations ...”
- „... theory for a ne motion-compensated prediction from Chapter 3 is investigated. ¿e unquantized prediction ...” „... introduced between the original signal and the quantization error. In this manner, the prediction error ...” „... caused by inaccurate motion estimation as modeled in Chapter 3 is simulated and the prediction error bit ...”
- „... shortly presented in Section 2.5. Hybrid video coding incorporating motion-compensated prediction and also ...” „... theory in Section 2.7 as a basis for the a ne motion-compensated prediction in video coding in the next ...” „... , only the di erence to the original frame (called prediction error) has to be encoded and transmitted ...”
- „... ciency of Motion-Compensating Prediction for Hybrid Coding of Video Sequences. IEEE Journal on Selected ...” „... . Ostermann.Moving Object Tracking for Aerial Video Coding using Linear Motion Prediction and Block Matching. In ...” „... Intra-prediction inHigh E ciency Video Coding (HEVC) Standard. International Journal of Computer Applications ...”
- „... rate-distortion analysis of a nemotion-compensated prediction in video coding was presented. ¿e derivations ...” „... prediction ŝk is computed (further referred to as di erence image). Spots of high energy which are not ...” „... prediction). Both modes are based on the fact that non-ROI areas in the preprocessed video frame s∗k are ...”