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The volume-wise labeling of 3D medical images is expertise-demanded and time-consuming; hence semi-supervised learning (SSL) is highly desirable for training with limited labeled data. Imbalanced class distribution is a severe problem that…

Image and Video Processing · Electrical Eng. & Systems 2023-07-25 Haonan Wang , Xiaomeng Li

Perceptual image hashing methods are often applied in various objectives, such as image retrieval, finding duplicate or near-duplicate images, and finding similar images from large-scale image content. The main challenge in image hashing…

Computer Vision and Pattern Recognition · Computer Science 2021-08-27 Rubel Biswas , Pablo Blanco-Medina

When facing large-scale image datasets, online hashing serves as a promising solution for online retrieval and prediction tasks. It encodes the online streaming data into compact binary codes, and simultaneously updates the hash functions…

Information Retrieval · Computer Science 2019-04-24 Mingbao Lin , Rongrong Ji , Hong Liu , Xiaoshuai Sun , Yongjian Wu , Yunsheng Wu

Supervised hashing methods are widely-used for nearest neighbor search in computer vision applications. Most state-of-the-art supervised hashing approaches employ batch-learners. Unfortunately, batch-learning strategies can be inefficient…

Computer Vision and Pattern Recognition · Computer Science 2015-11-11 Fatih Cakir , Sarah Adel Bargal , Stan Sclaroff

We develop a scalable algorithm to learn binary hash codes for indexing large-scale datasets. Near-isometric binary hashing (NIBH) is a data-dependent hashing scheme that quantizes the output of a learned low-dimensional embedding to obtain…

Data Structures and Algorithms · Computer Science 2016-03-15 Amirali Aghazadeh , Andrew Lan , Anshumali Shrivastava , Richard Baraniuk

With the rapid growth of multimodal media data on the Web in recent years, hash learning methods as a way to achieve efficient and flexible cross-modal retrieval of massive multimedia data have received a lot of attention from the current…

Information Retrieval · Computer Science 2022-07-27 Yitian Long

Hashing methods have been recently found very effective in retrieval of remote sensing (RS) images due to their computational efficiency and fast search speed. The traditional hashing methods in RS usually exploit hand-crafted features to…

Computer Vision and Pattern Recognition · Computer Science 2021-01-07 Subhankar Roy , Enver Sangineto , Begüm Demir , Nicu Sebe

Abundant real-world data can be naturally represented by large-scale networks, which demands efficient and effective learning algorithms. At the same time, labels may only be available for some networks, which demands these algorithms to be…

Machine Learning · Computer Science 2022-09-08 Tao He , Lianli Gao , Jingkuan Song , Yuan-Fang Li

Unsupervised binary representation allows fast data retrieval without any annotations, enabling practical application like fast person re-identification and multimedia retrieval. It is argued that conflicts in binary space are one of the…

Computer Vision and Pattern Recognition · Computer Science 2020-11-23 Fangrui Liu , Zheng Liu

Due to its low storage cost and fast query speed, cross-modal hashing (CMH) has been widely used for similarity search in multimedia retrieval applications. However, almost all existing CMH methods are based on hand-crafted features which…

Information Retrieval · Computer Science 2016-02-16 Qing-Yuan Jiang , Wu-Jun Li

Existing fine-grained hashing methods typically lack code interpretability as they compute hash code bits holistically using both global and local features. To address this limitation, we propose ConceptHash, a novel method that achieves…

Computer Vision and Pattern Recognition · Computer Science 2024-06-13 Kam Woh Ng , Xiatian Zhu , Yi-Zhe Song , Tao Xiang

Fast similarity search is a key component in large-scale information retrieval, where semantic hashing has become a popular strategy for representing documents as binary hash codes. Recent advances in this area have been obtained through…

Information Retrieval · Computer Science 2019-06-04 Casper Hansen , Christian Hansen , Jakob Grue Simonsen , Stephen Alstrup , Christina Lioma

Labeling semantic segmentation datasets is a costly and laborious process if compared with tasks like image classification and object detection. This is especially true for remote sensing applications that not only work with extremely high…

Computer Vision and Pattern Recognition · Computer Science 2021-08-27 Matheus Barros Pereira , Jefersson Alex dos Santos

Hashing techniques have been applied broadly in retrieval tasks due to their low storage requirements and high speed of processing. Many hashing methods based on a single view have been extensively studied for information retrieval.…

Machine Learning · Computer Science 2020-01-07 Jun Yu , Xiao-Jun Wu , Josef Kittler

Learning based hashing plays a pivotal role in large-scale visual search. However, most existing hashing algorithms tend to learn shallow models that do not seek representative binary codes. In this paper, we propose a novel hashing…

Computer Vision and Pattern Recognition · Computer Science 2018-04-26 Zhaoqiang Xia , Xiaoyi Feng , Jinye Peng , Abdenour Hadid

Several deep supervised hashing techniques have been proposed to allow for efficiently querying large image databases. However, deep supervised image hashing techniques are developed, to a great extent, heuristically often leading to…

Computer Vision and Pattern Recognition · Computer Science 2019-01-17 Nikolaos Passalis , Anastasios Tefas

Image captioning models often suffer from performance degradation when applied to novel datasets, as they are typically trained on domain-specific data. To enhance generalization in out-of-domain scenarios, retrieval-augmented approaches…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Hao Wu , Zhihang Zhong , Xiao Sun

Node classification in structural networks has been proven to be useful in many real world applications. With the development of network embedding, the performance of node classification has been greatly improved. However, nearly all the…

Social and Information Networks · Computer Science 2021-04-13 Jia-Nan Guo , Xian-Ling Mao , Shu-Yang Lin , Wei Wei , Heyan Huang

Our work focuses on tackling large-scale fine-grained image retrieval as ranking the images depicting the concept of interests (i.e., the same sub-category labels) highest based on the fine-grained details in the query. It is desirable to…

Information Retrieval · Computer Science 2023-11-23 Xiu-Shen Wei , Yang Shen , Xuhao Sun , Peng Wang , Yuxin Peng

Image enhancement is an important image processing technique that processes images suitably for a specific application e.g. image editing. The conventional solutions of image enhancement are grouped into two categories which are spatial…

Computer Vision and Pattern Recognition · Computer Science 2016-09-14 Hui Li , Xiaomeng Wang , Weifeng Liu , Yanjiang Wang