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A novel solution for the content-based 3D shape retrieval problem using an unsupervised clustering approach, which does not need any label information of 3D shapes, is presented in this work. The proposed shape retrieval system consists of…

Computer Vision and Pattern Recognition · Computer Science 2017-02-01 Xiaqing Pan , Yueru Chen , C. -C. Jay Kuo

Data preprocessing is a crucial step in the machine learning process that transforms raw data into a more usable format for downstream ML models. However, it can be costly and time-consuming, often requiring the expertise of domain experts.…

Databases · Computer Science 2023-08-23 Peng Li , Zhiyi Chen , Xu Chu , Kexin Rong

Recent development of 3D sensors allows the acquisition of extremely dense 3D point clouds of large-scale scenes. The main challenge of processing such large point clouds remains in the size of the data, which induce expensive computational…

Computer Vision and Pattern Recognition · Computer Science 2021-09-24 Thomas Richard , Florent Dupont , Guillaume Lavoue

The integration of behavioral phenomena into mechanistic models of cognitive function is a fundamental staple of cognitive science. Yet, researchers are beginning to accumulate increasing amounts of data without having the temporal or…

Machine Learning · Computer Science 2021-05-18 Sebastian Musslick

Point cloud analysis without pose priors is very challenging in real applications, as the orientations of point clouds are often unknown. In this paper, we propose a brand new point-set learning framework PRIN, namely, Pointwise…

Computer Vision and Pattern Recognition · Computer Science 2019-12-06 Yang You , Yujing Lou , Qi Liu , Yu-Wing Tai , Lizhuang Ma , Cewu Lu , Weiming Wang

Anomaly detection describes methods of finding abnormal states, instances or data points that differ from a normal value space. Industrial processes are a domain where predicitve models are needed for finding anomalous data instances for…

Machine Learning · Computer Science 2022-09-26 Alexander Zeiser , Bas van Stein , Thomas Bäck

The efficiency of natural language processing has improved dramatically with the advent of machine learning models, particularly neural network-based solutions. However, some tasks are still challenging, especially when considering specific…

Computation and Language · Computer Science 2024-03-13 Robert Lakatos , Gergo Bogacsovics , Balazs Harangi , Istvan Lakatos , Attila Tiba , Janos Toth , Marianna Szabo , Andras Hajdu

Retrieval systems are increasingly used in biomedical and clinical natural language processing applications, yet practical guidance for researchers building such systems is limited. In this work, we provide such guidance through an…

Information Retrieval · Computer Science 2026-04-24 Hayk Stepanyan , Matthew McDermott

New retrieval tasks have always been emerging, thus urging the development of new retrieval models. However, instantiating a retrieval model for each new retrieval task is resource-intensive and time-consuming, especially for a retrieval…

Information Retrieval · Computer Science 2023-03-24 Juhao Liang , Chen Zhang , Zhengyang Tang , Jie Fu , Dawei Song , Benyou Wang

Image retrieval is the task of finding images in a database that are most similar to a given query image. The performance of an image retrieval pipeline depends on many training-time factors, including the embedding model architecture, loss…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Gabriele Berton , Kevin Musgrave , Carlo Masone

Partially Relevant Video Retrieval (PRVR) aims to retrieve the target video that is partially relevant to the text query. The primary challenge in PRVR arises from the semantic asymmetry between textual and visual modalities, as videos…

Computer Vision and Pattern Recognition · Computer Science 2025-12-01 Junlong Ren , Gangjian Zhang , Yu Hu , Jian Shu , Hui Xiong , Hao Wang

Man-made objects usually exhibit descriptive curved features (i.e., curve networks). The curve network of an object conveys its high-level geometric and topological structure. We present a framework for extracting feature curve networks…

Graphics · Computer Science 2016-03-30 Yuanhao Cao , Liangliang Nan , Peter Wonka

Semantic shape completion is a challenging problem in 3D computer vision where the task is to generate a complete 3D shape using a partial 3D shape as input. We propose a learning-based approach to complete incomplete 3D shapes through…

Computer Vision and Pattern Recognition · Computer Science 2018-10-02 Swaminathan Gurumurthy , Shubham Agrawal

We present a new solution to the fine-grained retrieval of clean CAD models from a large-scale database in order to recover detailed object shape geometries for RGBD scans. Unlike previous work simply indexing into a moderately small…

Computer Vision and Pattern Recognition · Computer Science 2022-07-05 Jiaxin Wei , Lan Hu , Chenyu Wang , Laurent Kneip

Completing the whole 3D structure based on an incomplete point cloud is a challenging task, particularly when the residual point cloud lacks typical structural characteristics. Recent methods based on cross-modal learning attempt to…

Computer Vision and Pattern Recognition · Computer Science 2025-07-22 Hongye Hou , Liu Zhan , Yang Yang

Document parsing (DP) transforms unstructured or semi-structured documents into structured, machine-readable representations, enabling downstream applications such as knowledge base construction and retrieval-augmented generation (RAG).…

Point cloud completion aims to recover the complete 3D shape of an object from partial observations. While approaches relying on synthetic shape priors achieved promising results in this domain, their applicability and generalizability to…

Computer Vision and Pattern Recognition · Computer Science 2024-09-17 Başak Melis Öcal , Maxim Tatarchenko , Sezer Karaoglu , Theo Gevers

State-of-the-art approaches in computer vision heavily rely on sufficiently large training datasets. For real-world applications, obtaining such a dataset is usually a tedious task. In this paper, we present a fully automated pipeline to…

Computer Vision and Pattern Recognition · Computer Science 2023-04-19 Alexander Naumann , Felix Hertlein , Benchun Zhou , Laura Dörr , Kai Furmans

Retrieving the similar solutions from the historical case base for new design requirements is the first step in mechanical part redesign under the context of case-based reasoning. However, the manual retrieving method has the problem of low…

Artificial Intelligence · Computer Science 2023-02-14 Tianshuo Zang , Maolin Yang , Wentao Yong , Pingyu Jiang

Object recognition has seen significant progress in the image domain, with focus primarily on 2D perception. We propose to leverage existing large-scale datasets of 3D models to understand the underlying 3D structure of objects seen in an…

Computer Vision and Pattern Recognition · Computer Science 2020-07-28 Weicheng Kuo , Anelia Angelova , Tsung-Yi Lin , Angela Dai