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Petrissa Zell - Learning-Based Inverse Dynamics for Human Motion Analysis

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Petrissa Zell

Learning-Based Inverse Dynamics for Human Motion Analysis

Series: Informatik/ Kommunikation

Volume 877 2022

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Human motion dataset S. 62-75

„… 4H U M A N M O T I O N DATA S E TA learning-based approach to inverse dynamics of human motion …” „… of rotation around the contributing axes is assumed. This63human motion datasetis achieved by …” „… the centers of mass from the root of the segment with respect to the total65human motion …”

Introduction S. 1-14

„… Wandt and Bodo Rosenhahn. "Joint 3D Human MotionCapture and Physical Analysis from Monocular Videos." In …” „… metabolic energy. They yield a foundation forassessing human motion. Joint moments cannot be measured in a …” „… model, the equations of motion (EOM).When the human body is in contact with the ground, its weight …”

Bibliography S. 130-152

„… Taylor. “Learning Human Identity From MotionPatterns.” In: IEEE Access 4 (2016), pp. 1810–1820.[100 …” „… Rosenhahn. “Joint 3D Human MotionCapture and Physical Analysis from Monocular Videos.” In: The IEEE …” „… Informationsverarbeitung,Main Focus: Physical Modelling of Human Motion,Thesis: “Learning-based Inverse Dynamics for Human …”

Related work S. 15-22

„… reduced supervision in the broader field of human motion analysis(2.3).2.1 inverse dynamics by physical …” „… different task but can be exploited tocreate the required labels. In the field of human motion analysis …” „… the prediction of forcesand moments across different human motion data has not been investigated by …”

Titelei/Inhaltsverzeichnis S. I-XIV

„… Fortschritt-Berichte VDILearning-Based Inverse Dynamics for Human MotionAnalysisPetrissa Zell, M …” „… Human Motion AnalysisZell, Petrissa, M. Sc., Hannover NR. 877Institut für …” „… Dynamics for Human Motion AnalysisFortschritt-Berichte VDI, Reihe 10, Nr. 877. Düsseldorf: VDI Verlag …”

Supervised learning of inverse dynamics S. 76-94

„… summarized as follows:1. Learning-based methods for solving the inverse dynamics problem of human motion.2. A …” „… exactly this property can be exploited for the detection of abnormal motionpatterns, i. e. motions that …” „… Fukuchi-set [39] using an NNend-to-end regression.5.2.3 Application to Reconstructed MotionsIn this Section …”

Conclusions S. 123-126

„… with self-supervision match the input motion in terms of thesatisfaction of the equations of motion.In …” „… 7C O N C L U S I O N SIn this work, machine learning models for inverse dynamics of human …” „… of motion. Based on the quantitativeevaluation it can be concluded that regression methods like …”

Fundamentals S. 23-61

„… 3F U N DA M E N TA L S3.1 rigid body motionDue to the stiffness of skeletal bones, the human body …” „… representation of rigid motion for individual bodies. Inorder to model the motion of an entire human skeleton, we …” „… body motionAs an example basic rotations around the coordinate axes (of the reference frame) by anangle …”

Self-supervision by dynamics-based layers S. 95-122

„… factorfor the application of machine learning models in inverse dynamics of human motion.Suitable sets …” „… self-supervised learning for inverse dynamics of human motion. Itis based on an earlier publication from which …” „… network, that regresses the GRF/M and the joint torques from motion.Based on this prediction and the …”

doi.org/10.51202/9783186877109

Timo von Marcard - Human Motion Capture with Sparse Inertial Sensors and Video

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Timo von Marcard

Human Motion Capture with Sparse Inertial Sensors and Video

Series: Informatik/ Kommunikation

Volume 866 2020

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Introduction S. 5-21

„… is a lot of information in our movements and this has many potential applications. Human motions are …” „… musculoskeletal system. Human motions are also used for animating virtual characters in movies or games. This …” „… , human motion is an important input to man-machine and human-computer interaction. A prerequisite for …”

Bibliography S. 107-120

„… Bibliography [1] Bodo Rosenhahn, Reinhard Klette, and Dimitris Metaxas. Human Motion. Springer …” „… survey of advances in vision-based human motion capture and analysis. Computer vision and image …” „… inertial sensors for human motion analysis: A review. Sensors Journal (IEEE), 16(22):7821–7834, 2016. [9 …”

Fundamentals S. 22-48

„… 2 Fundamentals This thesis deals with human motion in three-dimensional euclidean space. In …” „… 2.2 Human Motion Modeling In order to model human motion, we simplify and idealize the human body to …” „… to frame F a, we can parametrize 26 2.2 Human Motion Modeling Mab in terms of the exponential …”

Conclusions S. 103-106

„… -machine interactions, surveillance and learning approaches. Consequently, human motion capture has actively researched …” „… this is accepted as the goldstandard in human motion capture, such systems are restricted to very …” „… self-occlusions generated by the articulated structure of the human body. Motion capture with inertial sensors …”

Sparse Inertial Poser S. 49-73

„… part of the method. This chapter presents a method to improve practicability of IMU-based human motion …” „… , lower legs, back and head) and works for arbitrary human motions, which is illustrated in Figure 3.1 …” „… . 3.1 Introduction The recording of human motion contributed substantially to the fields of biomechanics …”

Titelei/Inhaltsverzeichnis S. I-XII

„… Reihe 10 Human Motion Capture with Sparse Inertial Sensors and Video Institut für …” „… Seite 1 PI TS TO PS ER VE R Human Motion Capture with Sparse Inertial Sensors and Video Von der Fakultät …” „… . Oktober 2019 Fortschritt-Berichte VDI Human Motion Capture with Sparse Inertial Sensors and Video Timo …”

Video Inertial Poser S. 74-102

„… perform accurate 3D human motion capture with hand-held video and IMUs we perform three subsequent steps …” „… hand-held smartphone camera with data coming from body-worn IMUs. It enables to capture motions of multiple …” „… overcome the main limitations of IMU-based motion capture: intractable root joint position, accumulating …”

doi.org/10.51202/9783186866103

Bastian Wandt - Human Pose Estimation from Monocular Images

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Bastian Wandt

Human Pose Estimation from Monocular Images

Series: Informatik/ Kommunikation

Volume 869 2020

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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 …”

Titelei/Inhaltsverzeichnis S. I-XIV

„… Motion This dissertation deals with the problem of capturing human motions and poses using a single …” „… of human motions from image sequences. To resolve inherent ambiguities in monocular 3D …” „… reconstruction the main idea of this part is to exploit temporal properties of human motions in combination with …”

Bibliography S. 101-116

„… , Bodo Rosenhahn, and Marcus Magnor. “Optical Flow-based 3D Human Motion Estimation from Monocular Video …” „… ). 2000, pp. 690–696. [11] CMU. Human motion capture database. 2014. url: http://mocap. cs.cmu.edu/. [12 …” „… , Feilin Han, Yilin Gui, Zhen Wang, Mohan Kankanhalli, and Weidong Geng. “Markerless 3D human motion …”

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 …” „… . This led to high-quality 3D reconstructions of human motions even under difficult conditions, e. g. low …”

Related Work S. 17-21

„… time consistent human motion capture is reviewed. Commonly used error metrics and MoCap datasets are …” „… suitable for the special case of human motion capture. Indeed, there is a human motion sequence in the …” „… sequences of human poses. 2.3 time consistent human motion capture Exploiting temporal coherence in image …”

Exploiting Temporal Properties S. 40-79

„… 4 EXPLOIT ING TEMPORAL PROPERTIES Markerless human motion capture has improved constantly over the …” „… other motions knowledge about the human kinematic chain is employed in Section 4.2 by deriving a …” „… reconstruction of human motions from monocular image sequences as shown in Figure 4.1. The recovery of 3D …”

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 …” „… relatively uncommon metrics the reader is referred to [74]. 3.5 datasets Human motion capture is a very …”

Single Image Reconstruction Using Adversarial Training S. 80-96

„… motion from the test set of Human3.6M. The left 3D skeleton is the ground truth (GT) and the right shows …” „… predicts 3D human poses from noisy 2D joint detections. We use weakly supervised adversarial training …” „… builds upon the findings of Section 4.1 that a learned space of human poses gives reasonable constraints …”

doi.org/10.51202/9783186869104

VDI Wissensforum GmbH - Humanschwingungen 2020

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VDI Wissensforum GmbH (ed.)

Humanschwingungen 2020

Series: VDI-Berichte

Volume 2370 2020

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M. Mirakhorlo, T. Irmak, R. Happee Simulating lateral postural stabilisation in dynamic cornering S. 75-84

„… . Introduction The biomechanical response of the human body to vehicle motion is of a great importance for …” „… investigating human motion comfort [1, 2]. Deeper knowledge of motion comfort is particularly relevant for …” „… biomechanical response of the human body to vehicle motion is of a great importance for investigating human …”

A. Brietzke, R. Pham Xuan, A. Dettmann, A. C. Bullinger Motion Sickness in Cars: Evaluation of the vibration scale – MSDV for stop & go driving S. 41-52

„… Motion Sickness Applied ergonomics Mechanical vibration and shock - Evaluation of human exposure to …” „… Motion Sickness in Cars: Evaluation of the vibration scale – MSDV for stop & go driving A. Brietzke …” „… whole-body vibration Proceedings of the UK Informal Group Meeting on Human Response to Vibration Proceedings …”

B. Jung Smart tractor powertrain control for improved ride comfort during large square baling operation S. 31-40

„… motion of the heavy plunger and the power demand on the power takeoff lead to a pitching motion of the …” „… large square baling operation. The human’s exposure to whole-body vibrations is analyzed in greater …” „… motion. On the other hand, the compaction of harvested crop against the bale requires a high torque which …”

O. Dieterich, M. Priems Improvement of Helicopter Comfort of Ride Beyond Blade Passage Frequency – Research Project CORINNE S. 163-174

„… and motion platform tests for human perception and seat transfer characteristics. Motion platform …” „… vibration characteristics with special focus on low frequencies where human body sensitivity is high. One …” „… main experimental asset of this research project consists in laboratory tests on two different motion …”

I. Maciejewski, T. Krzyzynski Computer-aided approach to the design of vibration reduction systems – Methods and procedures for the optimal configuration of non-linear system behaviour S. 175-184

„… acting on the human body during a workday. However, the operators’ relative motion should be also minimal …” „… vibrations usually cause harmful effects to the human operators during their work. The greatest hazard for …” „… uneven ground. Such periodic vibrations in the driver’s cab result in the health risks and human safety …”

Titelei/Inhaltsverzeichnis S. I-VIII

„… . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 A. Siefert, CEO, Virtual Human GmbH, Würzburg f Schwingungsreduzierung an selbstfahrenden …” „… Komfortbewertungen Motion Sickness in Cars: Evaluation of the vibration scale – MSDV for stop & go driving …”

D. Bohrmann, W. Just, C. Maier, K. Bengler Ergonomie 2.0 – Das Fahrzeug als neuer Lebensraum S. 53-62

„… besteht jedoch die Gefahr an Kinetose (Motion Sickness) zu leiden. In vergangenen Studien konnte gezeigt …” „… risk of suffering from motion sickness. Recent studies have shown that a reclined seating position …” „… reduces the incidence of motion sickness. Since head dynamics play a central role in this process, a …”

doi.org/10.51202/9783181023709

Thomas Guthier - Visual Motion Processing

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Thomas Guthier

Visual Motion Processing

Series: Mess-, Steuerungs- und Regelungstechnik

Volume 1251 2016

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Computational Model S. 12-25

„… the processing of biological motion in the human visual cortex. In this chapter neurophysiological …” „… Experiments Motion processing in humans starts as early as on the retina. An overview of recent experimental …” „… well suited to contribute to biological motion recognition, because articulated human actions are …”

Introduction S. 1-11

„… ). 1.1 Biological Motion Recognition The capability to recognize complex motions, such as gestures, human …” „… ] revealed that humans have a highly skilled mechanism dedicated to the analysis of motion information. He …” „… movement coming from humans, animals or artificial systems, in contrast to ego-motion induced global …”

Bibliography S. 143-158

„… Shiffrar, M. (2007). Perception of human motion. Annu. Rev. Psychol., 58:47–73. [8] Blank, M., Gorelick, L …” „… . (2011). What does biological motion really mean? differentiating visual percepts of human, animal, and …” „… ., and Pyles, J. A. (2010). fmradaptation reveals invariant coding of biological motion on the human sts …”

Titelei/Inhaltsverzeichnis S. I-XII

„… – Machine Learning – Deep Learning The capability to recognize biological motion, i.e. gestures, human …” „… humans have a highly skilled mechanism dedicated to the analysis of motion information, however the exact …” „… - und Regelungstechnik Reihe 8 Visual Motion Processing Berichte aus dem Institut für …”

Conclusion S. 126-131

„… Network (FFNN) for biological motion recognition, the optical flow estimation (VNMF-OFE) and the learned …” „… Estimation (VNMF-OFE) The motion analysis starts on the small scale with the estimation of the optical flow …” „… , i.e. the motion of each pixel between two consecutive images. The VNMF approach changes the OFE …”

Human Action Recognition S. 116-125

„… 116 6 Human Action Recognition The goal of the proposed FFNN is the classification of human …” „… movements such as gestures, facial expressions or human full body movements, e.g. actions. The …” „… classification performance is evaluated on two benchmarks for Human Action Recognition (HAR), the Weizmann [8 …”

Feature Extraction S. 89-115

„… 89 5 Feature Extraction A central part of the proposed system for biological motion recognition is …” „… that combine shape and motion information, thus dynamic form patterns and second, gradient amplitude …” „… are used as the training input for the VNMF. Since the goal is to learn patterns related to human …”

Optical Flow Estimation S. 58-88

„… 58 4 Optical Flow Estimation As discussed in the introduction, motion is an useful source of …” „… information for a variety of tasks, such as the recognition of human actions, gestures or face expressions …” „… . Motion couples two important properties, form and temporal variations. Rigid forms can only change …”

Sparse Non-Negative Linear Dynamic Systems S. 137-142

„… due to a common basis vector set W̄ . However, this assumption might not hold, e.g. for human actions …” „… results of the sNN-LDS algorithm for varying number of basis vectors J for human action recognition are …” „… hierarchical biological motion recognition system. At first, the spatial and temporal gradients of the incoming …”

Unsupervised Pattern Learning S. 26-57

„… human visual cortex V1. Sparsity constraints have since then been of major interest in pattern learning …” „… proposed FFNN for biological motion recognition. For the optical flow estimation (discussed in chapter 4 …” „… opposing motion directions. As opposed to the OFE algorithm, the additional dimensions are represented in …”

doi.org/10.51202/9783186251084

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