„… block is entirely replaced by a Video preprocessing 84 4 ROI-based System for Low Bit Rate Coding of …” „… degradation is caused by general ROI coding—except for errors introduced by the video encoding itself, i. e …” „… 65 4 ROI-based System for Low Bit Rate Coding of Aerial Videos In the last chapter, a …”

„… simpli ed a ne motion model. 5.2 Evaluation of the ROI-based System for Low Bit Rate Aerial Video Coding …” „… 99 5.2 Evaluation of the ROI-based System for Low Bit Rate Aerial Video Coding ¿e ROI coding system …” „… ROI-based System for Low Bit Rate Aerial Video Coding 103 Table 5.3: Bit rates used for subjective tests …”

„… ] for the simpli ed a ne model. 2. A region of interest-based video coding system (ROI-based coding …” „… enables the use of the proposed ROI-based coding system for aerial videos with arbitrary video codecs …” „… global motions. A ROI-based coding system for aerial video sequences exploiting the special …”

„… Interest- (ROI-) based Video Coding . . . . . . . . . . . . . . 33 2.8.1 ROI de nition and detection …” „… A ne Motion-Compensated Prediction in Video Coding . . . . 63 4 ROI-based System for Low Bit Rate …” „… performant di erence image-based moving object detection . . . . . . 75 4.3 ROI Coding of Aerial Video …”

„… . Chi, C.-T. Hsu, and J.-W. Chen. ROI Video Coding based on H.263+ with Robust Skin-Color Detection …” „… . Low Bit Rate ROI Based Video Coding for HDTV Aerial Surveillance Video Sequences. In Proceedings of …” „… . Complexity-Aware Adaptive Spatial Pre-Processing for ROI Scalable Video Coding with Dynamic Transition Region. In …”

„… . (2.44) R(D) is obtained in bit per sample [92]. 2.8 Region of Interest- (ROI-) based Video Coding 33 For …” „… represent a theoretical lower bound. 2.8 Region of Interest- (ROI-) based Video Coding As explained in the …” „… Interest- (ROI-) based Video Coding 35 bk(x ,y) = { 1 for dk(x ,y) ≥ Tb 0 for dk(x ,y) < Tb , with dk(x ,y …”

„… codec-independent region of interest- (ROI-) based video coding system for aerial surveillance videos was proposed …” „… . Consequently, the second contribution of this thesis is a codec-independent ROI-based coding system for the e …” „… video encoder. It is based on the idea that non-ROI areas are compensated at the decoder anyway, and …”

„… . IEEE, 2001. [55] H. Meuel, M. Munderloh, and J. Ostermann. Low bit rate roi based video coding for hdtv …” „… . Superpixel-based segmentation of moving objects for low bitrate roi coding systems. In Proceedings of the IEEE …” „… International Conference on Advanced Video and Signal-Based Surveillance, pages 395–400, August 2013. 114 …”

„… object tracking and ROI video coding as it better links image regions over time. The latter has e.g. been …” „… video-based superpixels. Finally in Section 5.2, the effectiveness of the proposed framework is demonstrated …” „… (∑ (nb|nb∩gm =∅) |nb| ) − |gm| |gm| . (5.2) A second metric for the evaluation of a video-based …”

„… computer vision and video coding community. The main motion estimation algorithm used in video coding today …” „… 1 1 Introduction The detection and segmentation of moving objects in video sequences is a common …” „… research done and many algorithms are available. Most of them are based on background subtraction. One …”

„… The detection of moving objects in aerial video sequences is a common application in safety and …” „… parallax, two detectors for moving objects in nonplanar scenes are presented. One is based on a motion …” „… non-planar scenes is presented, allowing the use of image differences based methods for non-planar scenes …”