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🔍 heiner litz 📂 Engineering
Showing 196 results for "heiner litz" in Engineering
Engineering Preprint PDF DOI

Surface-Constrained Offline Warping with Contact-Aware Online Pose Projection for Safe Robotic Trajectory Execution

Farong Wang, Sai Swaminathan, Fei Liu · 2026

Robotic manipulation tasks that require repeated tool motion along curved surfaces frequently arise in surface finishing, inspection, and guided interaction. In practice, nominal motion primitives are…

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Engineering Preprint PDF DOI

Speech-Omni-Lite: Portable Speech Interfaces for Vision-Language Models

Dehua Tao, Xuan Luo, Daxin Tan, Kai Chen, Lanqing Hong, Jing Li, Ruifeng Xu, Xiao Chen · 2026

While large-scale omni-models have demonstrated impressive capabilities across various modalities, their strong performance heavily relies on massive multimodal data and incurs substantial computation…

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Engineering Preprint PDF DOI

AtomVLA: Scalable Post-Training for Robotic Manipulation via Predictive Latent World Models

Xiaoquan Sun, Zetian Xu, Chen Cao, Zonghe Liu, Yihan Sun, Jingrui Pang, Ruijian Zhang, Zhen Yang, Kang Pang, Dingxin He, Mingqi Yuan, Jiayu Chen · 2026

Vision-Language-Action (VLA) models demonstrate remarkable potential for generalizable robotic manipulation. The execution of complex multi-step behaviors in VLA models can be improved by robust instr…

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Engineering Preprint PDF DOI

Longitudinal Lesion Inpainting in Brain MRI via 3D Region Aware Diffusion

Zahra Karimaghaloo, Dumitru Fetco, Haz-Edine Assemlal, Hassan Rivaz, Douglas L. Arnold · 2026

Accurate longitudinal analysis of brain MRI is often hindered by evolving lesions, which bias automated neuroimaging pipelines. While deep generative models have shown promise in inpainting these lesi…

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Engineering Preprint PDF DOI

PISHYAR: A Socially Intelligent Smart Cane for Indoor Social Navigation and Multimodal Human-Robot Interaction for Visually Impaired People

Mahdi Haghighat Joo, Maryam Karimi Jafari, Alireza Taheri · 2026

This paper presents PISHYAR, a socially intelligent smart cane designed by our group to combine socially aware navigation with multimodal human-AI interaction to support both physical mobility and int…

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Engineering Preprint PDF DOI

Development of Domain-Invariant Visual Enhancement and Restoration (DIVER) Approach for Underwater Images

Rajini Makam, Sharanya Patil, Dhatri Shankari T M, Suresh Sundaram, Narasimhan Sundararajan · 2026

Underwater images suffer severe degradation due to wavelength-dependent attenuation, scattering, and illumination non-uniformity that vary across water types and depths. We propose an unsupervised Dom…

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Engineering Preprint PDF DOI

A Neural Network-Based Real-time Casing Collar Recognition System for Downhole Instruments

Si-Yu Xiao, Xin-Di Zhao, Xiang-Zhan Wang, Tian-Hao Mao, Ying-Kai Liao, Xing-Yu Liao, Yu-Qiao Chen, Jun-Jie Wang, Shuang Liu, Tu-Pei Chen, Yang Liu · 2025

Casing collar locator (CCL) measurements are widely used as reliable depth markers for positioning downhole instruments in cased-hole operations, enabling accurate depth control for operations such as…

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Engineering Preprint PDF DOI

Quadrupped-Legged Robot Movement Plan Generation using Large Language Model

Muhtadin, Vincentius Gusti Putu A. B. M., Ahmad Zaini, Mauridhi Hery Purnomo, I Ketut Eddy Purnama, Chastine Fatichah · 2025

Traditional control interfaces for quadruped robots often impose a high barrier to entry, requiring specialized technical knowledge for effective operation. To address this, this paper presents a nove…

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Engineering Preprint PDF DOI

dLITE: Differentiable Lighting-Informed Trajectory Evaluation for On-Orbit Inspection

Jack Naylor, Raghav Mishra, Nicholas H. Barbara, Donald G. Dansereau · 2025

Visual inspection of space-borne assets is of increasing interest to spacecraft operators looking to plan maintenance, characterise damage, and extend the life of high-value satellites in orbit. The e…

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Engineering Preprint PDF DOI

R2MF-Net: A Recurrent Residual Multi-Path Fusion Network for Robust Multi-directional Spine X-ray Segmentation

Xuecheng Li, Weikuan Jia, Komildzhon Sharipov, Sharipov Hotam Beknazarovich, Farzona S. Ataeva, Qurbonaliev Alisher, Yuanjie Zheng · 2025

Accurate segmentation of spinal structures in X-ray images is a prerequisite for quantitative scoliosis assessment, including Cobb angle measurement, vertebral translation estimation and curvature cla…

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Engineering Preprint PDF DOI

Diagnose, Correct, and Learn from Manipulation Failures via Visual Symbols

Xianchao Zeng, Xinyu Zhou, Youcheng Li, Jiayou Shi, Tianle Li, Liangming Chen, Lei Ren, Yong-Lu Li · 2025

Vision-Language-Action (VLA) models have recently achieved remarkable progress in robotic manipulation, yet they remain limited in failure diagnosis and learning from failures. Additionally, existing …

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Engineering Preprint PDF DOI

Ein Fenster zur gleichzeitigen Messung der Uebertragungsfunktion eines realen Systems und des Leistungsdichtespektrums des ueberlagerten Rauschens am Systemausgang (Teil 2)

Helmut Repp · 2025

The method described in the first part for frequency-selectively measuring the transfer function and the noise power spectral density of the superimposed noise at the output of a disturbed, real syste…

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Engineering Preprint PDF DOI

Ein Fenster zur gleichzeitigen Messung der Uebertragungsfunktion eines realen Systems und des Leistungsdichtespektrums des ueberlagerten Rauschens am Systemausgang (Teil 1)

Helmut Repp · 2025

There is already a method known from the literature with which it is possible to measure both the transfer function and the noise power spectral density of the superimposed noise at the output of a di…

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Engineering Preprint PDF DOI

Lightweight Deep Autoencoder for ECG Denoising with Morphology Preservation and Near Real-Time Hardware Deployment

Mahdi Pirayesh Shirazi Nejad, David Hicks, Matt Valentine, Ki H. Chon · 2025

Electrocardiogram (ECG) signals are often degraded by various noise sources such as baseline wander, motion artifacts, and electromyographic interference, posing a major challenge in clinical settings…

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Engineering Preprint PDF DOI

Lite VLA: Efficient Vision-Language-Action Control on CPU-Bound Edge Robots

Justin Williams, Kishor Datta Gupta, Roy George, Mrinmoy Sarkar · 2025

The deployment of artificial intelligence models at the edge is increasingly critical for autonomous robots operating in GPS-denied environments where local, resource-efficient reasoning is essential.…

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Engineering Preprint PDF DOI

PathFormer: A Transformer with 3D Grid Constraints for Digital Twin Robot-Arm Trajectory Generation

Ahmed Alanazi, Duy Ho, Yugyung Lee · 2025

Robotic arms require precise, task-aware trajectory planning, yet sequence models that ignore motion structure often yield invalid or inefficient executions. We present a Path-based Transformer that e…

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Engineering Preprint PDF DOI

HEADER: Hierarchical Robot Exploration via Attention-Based Deep Reinforcement Learning with Expert-Guided Reward

Yuhong Cao, Yizhuo Wang, Jingsong Liang, Shuhao Liao, Yifeng Zhang, Peizhuo Li, Guillaume Sartoretti · 2025

This work pushes the boundaries of learning-based methods in autonomous robot exploration in terms of environmental scale and exploration efficiency. We present HEADER, an attention-based reinforcemen…

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Engineering Preprint PDF DOI

Q-EnergyDEX: A Zero-Trust Distributed Energy Trading Framework Driven by Quantum Key Distribution and Blockchain

Ziqing Zhu · 2025

The rapid decentralization and digitalization of local electricity markets have introduced new cyber-physical vulnerabilities, including key leakage, data tampering, and identity spoofing. Existing bl…

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Engineering Preprint PDF DOI

Hybrid Terrain-Aware Path Planning: Integrating VD-RRT* Exploration and VD-D* Lite Repair

Akshay Naik, William R. Norris, Dustin Nottage, Ahmet Soylemezoglu · 2025

Autonomous ground vehicles operating off-road must plan curvature-feasible paths while accounting for spatially varying soil strength and slope hazards in real time. We present a continuous state--cos…

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Engineering Preprint PDF DOI

Fitzpatrick Thresholding for Skin Image Segmentation

Duncan Stothers, Sophia Xu, Carlie Reeves, Lia Gracey · 2025

Accurate estimation of the body surface area (BSA) involved by a rash, such as psoriasis, is critical for assessing rash severity, selecting an initial treatment regimen, and following clinical treatm…

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