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Showing 20 results for "masataka imura" in Engineering · Preprint
Engineering Preprint PDF DOI

From Folding Mechanics to Robotic Function: A Unified Modeling Framework for Compliant Origami

Bohan Zhang, Bo Wang, Huajiang Ouyang, Zhigang Wu, Haohao Bi, Jiawei Xu, Mingchao Liu, Weicheng Huang · 2026

Origami inspired architectures offer a powerful route toward lightweight, reconfigurable, and programmable robotic systems. Yet, a unified mechanics framework capable of seamlessly bridging rigid fold…

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Engineering Preprint PDF DOI

Replaceable Bit-based Gripper for Picking Cluttered Food Items

Prashant Kumar, Yukiyasu Domae, Weiwei Wan, Kensuke Harada · 2026

The food packaging industry goes through changes in food items and their weights quite rapidly. These items range from easy-to-pick, single-piece food items to flexible, long and cluttered ones. We pr…

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Engineering Preprint PDF DOI

Design and Fabrication of Origami-Inspired Knitted Fabrics for Soft Robotics

Sehui Jeong, Magaly C. Aviles, Athena X. Naylor, Cynthia Sung, Allison M. Okamura · 2025

Soft robots employing compliant materials and deformable structures offer great potential for wearable devices that are comfortable and safe for human interaction. However, achieving both structural i…

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Engineering Preprint PDF DOI

Unified Medical Image Tokenizer for Autoregressive Synthesis and Understanding

Chenglong Ma, Yuanfeng Ji, Jin Ye, Zilong Li, Chenhui Wang, Junzhi Ning, Wei Li, Lihao Liu, Qiushan Guo, Tianbin Li, Junjun He, Hongming Shan · 2025

Autoregressive modeling has driven major advances in multimodal AI, yet its application to medical imaging remains constrained by the absence of a unified image tokenizer that simultaneously preserves…

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Engineering Preprint PDF DOI

Radiologist-in-the-Loop Self-Training for Generalizable CT Metal Artifact Reduction

Chenglong Ma, Zilong Li, Yuanlin Li, Jing Han, Junping Zhang, Yi Zhang, Jiannan Liu, Hongming Shan · 2025

Metal artifacts in computed tomography (CT) images can significantly degrade image quality and impede accurate diagnosis. Supervised metal artifact reduction (MAR) methods, trained using simulated dat…

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Engineering Preprint PDF DOI

Outlier Detection in Large Radiological Datasets using UMAP

Mohammad Tariqul Islam, Jason W. Fleischer · 2024

The success of machine learning algorithms heavily relies on the quality of samples and the accuracy of their corresponding labels. However, building and maintaining large, high-quality datasets is an…

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Engineering Preprint PDF DOI

Amplifying the Kinematics of Origami Mechanisms With Spring Joints

Malcolm Smith · 2024

Due to its rigid foldability and predictable kinematics, the reverse fold is the fundamental mechanism behind some of the most well known origami kinematic structures, including the Miura Ori, Yoshimu…

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Engineering Preprint PDF DOI

How does self-supervised pretraining improve robustness against noisy labels across various medical image classification datasets?

Bidur Khanal, Binod Bhattarai, Bishesh Khanal, Cristian Linte · 2024

Noisy labels can significantly impact medical image classification, particularly in deep learning, by corrupting learned features. Self-supervised pretraining, which doesn't rely on labeled data, can …

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Engineering Preprint PDF DOI

Prompted Contextual Transformer for Incomplete-View CT Reconstruction

Chenglong Ma, Zilong Li, Junjun He, Junping Zhang, Yi Zhang, Hongming Shan · 2023

Incomplete-view computed tomography (CT) can shorten the data acquisition time and allow scanning of large objects, including sparse-view and limited-angle scenarios, each with various settings, such …

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Engineering Preprint PDF DOI

OriWheelBot: An origami-wheeled robot

Jie Liu, Zufeng Pang, Zhiyong Li, Guilin Wen, Zhoucheng Su, Junfeng He, Kaiyue Liu, Dezheng Jiang, Zenan Li, Shouyan Chen, Yang Tian, Yi Min Xie, Zhenpei Wang, Zhuangjian Liu · 2023

Origami-inspired robots with multiple advantages, such as being lightweight, requiring less assembly, and exhibiting exceptional deformability, have received substantial and sustained attention. Howev…

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Engineering Preprint PDF DOI

FreeSeed: Frequency-band-aware and Self-guided Network for Sparse-view CT Reconstruction

Chenglong Ma, Zilong Li, Junping Zhang, Yi Zhang, Hongming Shan · 2023

Sparse-view computed tomography (CT) is a promising solution for expediting the scanning process and mitigating radiation exposure to patients, the reconstructed images, however, contain severe streak…

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Engineering Preprint PDF DOI

A knee cannot have lung disease: out-of-distribution detection with in-distribution voting using the medical example of chest X-ray classification

Alessandro Wollek, Theresa Willem, Michael Ingrisch, Bastian Sabel, Tobias Lasser · 2022

To investigate the impact of OOD radiographs on existing chest X-ray classification models and to increase their robustness against OOD data. The study employed the commonly used chest X-ray classific…

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Engineering Preprint PDF DOI

MedShift: identifying shift data for medical dataset curation

Xiaoyuan Guo, Judy Wawira Gichoya, Hari Trivedi, Saptarshi Purkayastha, Imon Banerjee · 2021

To curate a high-quality dataset, identifying data variance between the internal and external sources is a fundamental and crucial step. However, methods to detect shift or variance in data have not b…

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Engineering Preprint PDF DOI

Classification of Shoulder X-Ray Images with Deep Learning Ensemble Models

Fatih Uysal, F{i}rat Hardalac, Ozan Peker, Tolga Tolunay, Nil Tokgoz · 2021

Fractures occur in the shoulder area, which has a wider range of motion than other joints in the body, for various reasons. To diagnose these fractures, data gathered from Xradiation (X-ray), magnetic…

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Engineering Preprint PDF DOI

Exploiting the Nonlinear Stiffness of TMP Origami Folding to Enhance Robotic Jumping Performance

Sahand Sadeghi, Samuel Allison, Blake Betsill, Suyi Li · 2020

Via numerical simulation and experimental assessment, this study examines the use of origami folding to develop robotic jumping mechanisms with tailored nonlinear stiffness to improve dynamic performa…

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Engineering Preprint PDF DOI

Anomaly Detection on X-Rays Using Self-Supervised Aggregation Learning

Behzad Bozorgtabar, Dwarikanath Mahapatra, Guillaume Vray, Jean-Philippe Thiran · 2020

Deep anomaly detection models using a supervised mode of learning usually work under a closed set assumption and suffer from overfitting to previously seen rare anomalies at training, which hinders th…

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Engineering Preprint PDF DOI

X-Ray bone abnormalities detection using MURA dataset

A.Solovyova, I.Solovyov · 2020

We introduce the deep network trained on the MURA dataset from the Stanford University released in 2017. Our system is able to detect bone abnormalities on the radiographs and visualise such zones. We…

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Engineering Preprint PDF DOI

Constructing rigid-foldable generalized Miura-ori tessellations for curved surfaces

Yucai Hu, Yexin Zhou, Haiyi Liang · 2020

Origami has shown the potential to approximate three-dimensional curved surfaces by folding through designed crease patterns on flat materials. The Miura-ori tessellation is a widely used pattern in e…

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Engineering Preprint PDF DOI

Evaluation of modified uniformly redundant arrays as structured illuminations for ptychography

Daniel J. Ching, Selin Aslan, Viktor Nikitin, Michael J. Wojcik, Doga Gursoy · 2020

Previous studies have shown that the frequency content of an illumination affects the convergence rate and reconstruction quality of ptychographic reconstructions. In this numerical study, we demonstr…

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Engineering Preprint PDF DOI

Exploring large scale public medical image datasets

Luke Oakden-Rayner · 2019

Rationale and Objectives: Medical artificial intelligence systems are dependent on well characterised large scale datasets. Recently released public datasets have been of great interest to the field, …

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