The ability to perceive traversable regions is a crucial prerequisite for truly autonomous mobile systems. In our previous work [8], we introduced P-SVM, a 3D LiDAR-based traversability analysis system that achieves r...
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ISBN:
(纸本)9798350364200;9798350364194
The ability to perceive traversable regions is a crucial prerequisite for truly autonomous mobile systems. In our previous work [8], we introduced P-SVM, a 3D LiDAR-based traversability analysis system that achieves real-time performance in CPU. However, by design P-SVM does not capture features other than geometric features, limiting its performance and generalizability to complex environments. In this work, we introduce an augmented point cloud descriptor that further improves the performance of P-SVM. By exploiting additional features extracted from remission and height information in the point cloud, our model is able to adapt robustly to strong scene changes. Additionally, in the proposed descriptor, remission radial distribution features are introduced to capture local information around keypoints. This addresses the limitation of P-SVM, which focuses only on global features within the cell. Our new P-SVM2 model demonstrates performance almost on par with state-of-the-art deep learning-based methods on the challenging SemanticKITTI [1] dataset in the traversability analysis task. Notably, P-SVM2 is real-time and relies solely on mobile-level CPUs. Moreover, surprising results have been obtained in robustness and generalizability experiments.
The distributed measurement system (DMS) is a representative measurement system with multiple transmitters. One of essential indexes used to evaluate the overall performance of DMS is measurement uncertainty. In this ...
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The phenomenon where a sound itself conveys a specific impression is known as sound symbolism. Although sound symbolism has been observed in various domains, its comprehensive understanding remains elusive. Therefore,...
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ISBN:
(纸本)9798350319552;9798350319545
The phenomenon where a sound itself conveys a specific impression is known as sound symbolism. Although sound symbolism has been observed in various domains, its comprehensive understanding remains elusive. Therefore, we are gathering and examining instances of sound symbolism to elucidate its broader context. In this study, we focused on the names of Takarazuka Revue members as examples, hypothesizing that their naming might exhibit a unique pattern. We explored their acoustic characteristics using machine learning techniques. Our study employed Convolutional Neural Networks (CNN) and Grad-CAM for Explainable Artificial intelligence (XAI) for this investigation. The analysis revealed that male role names in the Takarazuka Revue tend to have fewer obstructive sounds compared to typical Japanese male names. Furthermore, it was observed that male role names have fewer resonant sounds than "musumeyaku (female role)" names.
Based on the Lennard-Jones potential function of long-range attraction and short-range repulsion between agents, this paper constructs a dynamical model of multi-agent clustering in one-dimensional space. The model ta...
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The development of machine learning technology and its algorithms has led to a significant breakthrough in the medical field. The ability to diagnose and predict diseases with high accuracy has been achieved with the ...
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This paper proposes an autonomous approach for repairing leakage at the international Space Station (ISS) using the NASA Astrobee robot with the 3rd Kibo Robot Programming Challenge (KRPC) guidelines provided by JAXA....
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ISBN:
(纸本)9798350307573;9798350307566
This paper proposes an autonomous approach for repairing leakage at the international Space Station (ISS) using the NASA Astrobee robot with the 3rd Kibo Robot Programming Challenge (KRPC) guidelines provided by JAXA. We bring into play image processing and analysis from the Astrobee Nav Cam data, circle detection algorithms, AR tag detection techniques, autonomous navigation, and a Visual Projective Localization And Mapping (VPLAM) approach for irradiating lasers with excellent precision at the Astrobee Robot Simulator. In addition, we discuss the various capabilities of the Astrobee Robots onboard the ISS and how they can facilitate the delivery of such an autonomous mission in emergencies. Lastly, we walk through ways to deal with randomness and uncertainty while operating, ensuring robustness and accuracy. Ultimately, we scored a precision of up to 0.03 cm on the KRPC online simulator.
Detecting and classifying cyberbullying in social media is hard because of the complex nature of online language and the changing nature of content. This study presents a multi-stage BERT fusion framework. It uses hie...
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With advancements in artificial intelligence, computer vision technologies have seen significant progress, enabling applications like facial recognition, autonomous driving, and medical imaging. This study leverages t...
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Large Language Models (LLMs) have demonstrated significant effectiveness across various NLP tasks, including text ranking. This study assesses the performance of large language models (LLMs) in listwise reranking for ...
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Soft-bodied crawling animals (like caterpillars and inchworms) exploit their active soft bodies with passive adaptability to achieve efficient locomotion and move on multiple terrains. While several research studies h...
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ISBN:
(纸本)9798350332223
Soft-bodied crawling animals (like caterpillars and inchworms) exploit their active soft bodies with passive adaptability to achieve efficient locomotion and move on multiple terrains. While several research studies have used this principle for robot development, most existing caterpillar/inchworminspired soft robots can still crawl on specific terrain (flat, inner, or outer pipes). To advance state-of-the-art soft robotic technology, we propose here a small soft-bodied crawling robot with electromagnetic legs and passive body adaptation. The robot is driven by neural central pattern generator (CPG)based control. Due to the combination of its actively contractable/extendable body, passively adaptable interconnected body joints, and electromagnetic legs, the robot can successfully crawl on a variety of metal terrains, including a flat surface, step, slope, confined space, and an inner (concave surface) and outer (convex surface) pipe in both horizontal and vertical directions. Additionally, it can be steered to navigate through a cluttered environment with obstacles. Using the CPG-based control method, the robot's locomotion speed can be simply regulated by changing a single CPG-frequency control parameter. This small soft robot has the potential to be employed as a robotic system for inner and outer pipe inspection and confined space exploration in the oil and gas industry.
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