Filter results

Results (183)

Sort by:

Select all Select all

Page 1

Marco Munderloh - Detection of Moving Objects for Aerial Surveillance of Arbitrary Terrain

Partial access

Select

Marco Munderloh

Detection of Moving Objects for Aerial Surveillance of Arbitrary Terrain

Series: Informatik/ Kommunikation

Volume 847 2016

Results in this title

Summary and Conclusions S. 93-96

„… 93 6 Summary and Conclusions The problems of the planar ground model in a motion detection system …” „… global motion model. The second method is the pixel-based detection by background subtraction, in which …” „… background motion more precisely. It also allows the usage of conventional motion detection algorithms based …”

Experiments S. 73-92

„… moving camera scenarios are compared. In the first part, the motion detection is performed entirely on …” „… influence of the outlier detection performance on the global motion compensation, the motion compensation is …” „… containing moving objects. 5.1 Motion Vector Classification In this section, well known outlier detection …”

Titelei/Inhaltsverzeichnis S. I-XII

„… . Keywords: Aerial Surveillance – Motion Detection – Motion Segmentation – Non-planar Motion Compensation …” „… Object Detection . . . . . . . . . . . . . 61 4.3 Mesh-based Motion Compensation …” „… ) pixel-wise motion detection results of the frame k Δrc relief displacement in radial direction ΔRc relief …”

Introduction S. 1-9

„… distinguish local object and global background motion vectors. To improve the detection, the approximation …” „… case of pixel-based motion detection, this leads to image differences between the current and motion …” „… the masked out areas and the necessary safety distances, the area where motion detection is possible …”

Bibliography S. 97-106

„… of Computer Vision, 1991. [65] P. H. S. Torr and D. W. Murray. Outlier Detection and Motion …” „… , Darmstadt, 4th edition, 2009. [2] C. H. Anderson, P. J. Burt, and G. S. Van der Wal. Change Detection and …” „… Detection and Tracking for Aerial Video Surveillance with Small UAVS. In ISCAS, pages 2670–2673. IEEE, 2007 …”

Basic Principles S. 10-33

„… Equation 2.32. 2.6 Moving Object Detection by Background Subtraction The detection of motion in a scene is …” „… detection algorithms to detect local motion in a moving camera scenario. The detection results highly depend …” „… sophisticated motion detection algorithm. binarization noise filter median previous frame k−Δk motion …”

Multi-Planar Landscape Model based on Triangle Meshes S. 58-72

„… Detection 61 4.2 Outlier Removal and Moving Object Detection As the mesh-based global motion compensation …” „… moving object detection, only the feature points referenced by the background motion object are given to …” „… suppress the relief displacements of non-planar ground structure during motion compensation for the use in …”

Planar Landscape Error Model S. 34-57

„… to the global motion compensation. 3.6 Height Restrictions based Outlier Detection Until now, the …” „… using a homography, as introduced in Chapter 2.5. This is a state-of-the-art global motion model in …” „… calculate the motion displacement of pixels from projected non-planar objects after motion compensation of …”

doi.org/10.51202/9783186847102

Holger Meuel - Analysis of Affine Motion Compensated Prediction and its Application in Aerial Video Coding

Partial access

Select

Holger Meuel

Analysis of Affine Motion Compensated Prediction and its Application in Aerial Video Coding

Series: Informatik/ Kommunikation

Volume 865 2019

Results in this title

ROI-based System for Low Bit Rate Coding of Aerial Videos S. 65-86

„… motion ROI-MO detection Pel-wise ROI-MO map Pel-wise ROI-NA map parameters Global motion List of blocks …” „… system. White: motion estimation from image sequence; gold: ROI-MO detection blocks; green: new area …” „… area to be coded Figure 4.2: New area detection (based on [75]). more to describe the global motion but …”

Titelei/Inhaltsverzeichnis S. I-XVIII

„… video coding – global motion compensation (GMC) – moving object detection – long-term mosaicking …” „… the center of distortion r11 . . . r33 Elements of R rk(n) Pel-wise motion detection results of the …” „… 10 Analysis of Affine Motion-Compensated Prediction and its Application in Aerial Video …”

Bibliography S. 133-152

„… Global Motion Compensation for Robust Mosaicking and Detection of Moving Objects in Aerial Surveillance …” „… Rocquencourt, France, pages 105–112, Mar. 2003. [123] P. H. Torr and D. W. Murray. Outlier Detection and Motion …” „… 133 Bibliography [1] T. Aach and A. Kaup. Bayesian Algorithms for Adaptive Change Detection in …”

Basics S. 11-36

„… detection Correspondence analysisz −1 re nement Parameter parameter estimation Outlier removal & Motion …” „… frame sk Figure 2.15: Background subtraction-based motion detection system [90]. As a noise lter the …” „… Section 2.3. Motion estimation from image sequences is explained in Section 2.4, covering feature …”

Introduction S. 1-10

„… . the motion compensation, is performed on quantized signals. Since a decoder reconstructs the image …” „… part (called block), only a reference to a similar image block is stored (motion vector, MV). For the …” „… Motion estimation prediction Intra-pic. T control Coder coding Entropy -1 T video signal Output video …”

Summary and Conclusions S. 117-132

„… ective pel-wise di erence detection between the motion-compensated predicted and the current video frame …” „… 117 6 Summary and Conclusions Motion-compensated prediction is one key element in modern hybrid …” „… translational motion model is su cient to describe most of the motion contained in the videos, in aerial …”

Experiments S. 87-116

„… theory for a ne motion-compensated prediction from Chapter 3 is investigated. ¿e unquantized prediction …” „… caused by inaccurate motion estimation as modeled in Chapter 3 is simulated and the prediction error bit …” „… containing distinct non-translational a ne motions are presented and compared to those of real-world aerial …”

doi.org/10.51202/9783186865106

Partial access

Select

VDI Wissensforum GmbH (ed.)

Autoreg 2019

Series: VDI-Berichte

Volume 2349 2019

Results in this title

D. Augustin, M. Hofmann, U. Konigorski Prediction of Highway Lane Changes Based on Prototype Trajectories S. 111-128

„… maneuver detection, trajectory prediction, motion pattern recognition, highly automated driving, boosted …” „… for a limited time horizon of less than a second [2]. Approaches that realize both motion detection …” „… Ulrich Konigorski. Motion pattern recognition for maneuver detection and trajectory prediction on …”

D. Augustin, J. Schucker, J. Tschirner, M. Hofmann, U. Konigorski A Simulation-Based Reinforcement Learning Approach for Long-Term Maneuver Planning in Highway Traffic Scenarios S. 47-60

„… transition model which predicts the future motion states of both the automated vehicle and its surrounding …” „… , prototypical trajectories as lateral motion primitives and potential fields for interaction-aware acceleration …” „… reinforcement learning, Q-learning, interaction-aware motion prediction, potential fields, prototype …”

doi.org/10.51202/9783181023495

Bastian Wandt - Human Pose Estimation from Monocular Images

Partial access

Select

Bastian Wandt

Human Pose Estimation from Monocular Images

Series: Informatik/ Kommunikation

Volume 869 2020

Results in this title

Introduction S. 1-16

„… human motion, behavior and intentions. Before a machine is able to achieve this goal it first needs to …” „… Human Motion Capture (MoCap). 1.1 applications and commercial systems Human Motion Capture has a wide …” „… adapt and develop MoCap technologies. In movie production motions of human-like avatars are animated …”

Conclusions S. 97-100

„… 6 CONCLUS IONS This thesis deals with the problem of image-based Human Motion Capture. Several …” „… exploits the facts that human motions are smooth and bone lengths remain constant for one person during an …” „… 3D reconstructions. The smoothness of periodic motions is enforced by using periodic functions to …”

Related Work S. 17-21

„… briefly reviews the most important works in the field of non-rigid structure from motion which is closely …” „… time consistent human motion capture is reviewed. Commonly used error metrics and MoCap datasets are …” „… discussed in the subsequent chapter in Section 3.4 and 3.5. 2.1 non-rigid structure-from-motion In 1992 …”

Bibliography S. 101-116

„… Dual Representation for Nonrigid Structure from Motion.” In: IEEE Transactions on Pattern Analysis and …” „… , Bodo Rosenhahn, and Marcus Magnor. “Optical Flow-based 3D Human Motion Estimation from Monocular Video …” „… , and Bernt Schiele. “Monocular 3d pose estimation and tracking by detection.” In: Conference on …”

Single Image Reconstruction Using Adversarial Training S. 80-96

„… predicts 3D human poses from noisy 2D joint detections. We use weakly supervised adversarial training …” „… results on similar data, but usually, the generalization to unknown motions and camera positions is …” „… stacked hourglass network that produces the 2D joint detections [58] that we use as the input does not …”

Exploiting Temporal Properties S. 40-79

„… 4 EXPLOIT ING TEMPORAL PROPERTIES Markerless human motion capture has improved constantly over the …” „… last years and is marketed in commercial products, e. g. from Simi Reality Motion Systems [77] and The …” „… camera motion which, in most cases, is not available in the scenarios mentioned above. Fortunately …”

Fundamentals S. 22-39

„… human poses are introduced. The basics of factorization based (non-rigid) structure from motion …” „… different models in the context of monocular human motion capture is given. The common pinhole camera model …” „… structure from motion e. g. [84] assumed an orthographic projection of the observed object. In this thesis …”

doi.org/10.51202/9783186869104

Roberto D. Henschel - Higher-Order Multiple Object Tracking

Partial access

Select

Roberto D. Henschel

Higher-Order Multiple Object Tracking

Series: Informatik/ Kommunikation

Volume 875 2021

Results in this title

HO-MOT with Signal Fusion S. 80-129

„… (IMUs). The fusion reduces the dependence on detection boxes, as motion cues are provided by the IMUs at …” „… . [183] propose to track corner features using KLT to obtain a motion model between detections …” „… detections and local motion measurements of body-worn IMUs. Instead of relying on appearance information, the …”

Introduction S. 1-32

„… is significantly less dependent on the video signal, input detections, appearance and motion models …” „… motion information irrespective 27 1 Introduction of visual occlusions. Hence, once detections in the …” „… method that is less dependent on the detection quality and on motion and appearance models of persons …”

Conclusions S. 165-171

„… rely on certain appearance and motion assumptions between detections that are not always satisfied …” „… tracking-by-detection paradigm: By integrating actual measured motion information, VIT is less dependent on predefined …” „… motion and appearance models. The problem of error-prone features extracted from object detections is …”

Bibliography S. 172-196

„… furious: Real time endto-end 3d detection, tracking and motion forecasting with a single convolutional net …” „… , Antonios Danelakis, and Stelios CA Thomopoulos. “Automated Real-time Anomaly Detection in Human …” „… , Choon-Ching Ng, Sugiri Pranata, Shengmei Shen, and Junliang Xing. “Dual-mode vehicle motion pattern learning …”

Lifted Disjoint Paths S. 130-164

„… deviations of detections from the estimated motion trajectory. This enforces spatio-temporal consistency of …” „… between detections in three consecutive video frames together with a feasible labeling. We enhance the …” „… network flow model (black) with lifted edges (blue) representing whether two detections belong to the same …”

Titelei/Inhaltsverzeichnis S. I-XVIII

„… (e.g., due to motion blur or similarly dressed persons). Missing detections can be reconstructed very …” „… Multiple Object Tracking (MOT) . . . . . . . . . . 4 1.2.2 Tracking-by-detection …” „… Tracking by Fusing Head and People Detections . . . . 98 3.4.1 Data association model …”

doi.org/10.51202/9783186875105

1

2 3 ... 37