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Embedding image features into a binary Hamming space can improve both the speed and accuracy of large-scale query-by-example image retrieval systems. Supervised hashing aims to map the original features to compact binary codes in a manner…

Machine Learning · Computer Science 2016-11-17 Guosheng Lin , Chunhua Shen , Anton van den Hengel

Convolution Neural Networks (CNN) have recently achieved state-of-the art performance on handwritten Chinese character recognition (HCCR). However, most of CNN models employ the SoftMax activation function and minimize cross entropy loss,…

Machine Learning · Computer Science 2019-09-02 Junyi Zou , Jinliang Zhang , Ludi Wang

Due to their high versatility in tasks such as image captioning, document analysis, and automated content generation, multimodal Large Language Models (LLMs) have attracted significant attention across various industrial fields. In…

Computer Vision and Pattern Recognition · Computer Science 2025-04-01 Kotaro Inoue

Optical character recognition (OCR) has advanced rapidly with deep learning and multimodal models, yet most methods focus on well-resourced scripts such as Latin and Chinese. Ethnic minority languages remain underexplored due to complex…

Computer Vision and Pattern Recognition · Computer Science 2026-02-25 Bonan Liu , Zeyu Zhang , Bingbing Meng , Han Wang , Hanshuo Zhang , Chengping Wang , Daji Ergu , Ying Cai

Script identification plays a significant role in analysing documents and videos. In this paper, we focus on the problem of script identification in scene text images and video scripts. Because of low image quality, complex background and…

Computer Vision and Pattern Recognition · Computer Science 2018-08-08 Ankan Kumar Bhunia , Aishik Konwer , Ayan Kumar Bhunia , Abir Bhowmick , Partha P. Roy , Umapada Pal

The aim of this paper is two-fold: firstly, to present subspace embedding properties for $s$-hashing sketching matrices, with $s\geq 1$, that are optimal in the projection dimension $m$ of the sketch, namely, $m=\mathcal{O}(d)$, where $d$…

Numerical Analysis · Mathematics 2021-05-26 Coralia Cartis , Jan Fiala , Zhen Shao

Dominant scene text recognition models commonly contain two building blocks, a visual model for feature extraction and a sequence model for text transcription. This hybrid architecture, although accurate, is complex and less efficient. In…

Computer Vision and Pattern Recognition · Computer Science 2022-05-24 Yongkun Du , Zhineng Chen , Caiyan Jia , Xiaoting Yin , Tianlun Zheng , Chenxia Li , Yuning Du , Yu-Gang Jiang

Optical character recognition (OCR) technology has been widely used in various scenes, as shown in Figure 1. Designing a practical OCR system is still a meaningful but challenging task. In previous work, considering the efficiency and…

Computer Vision and Pattern Recognition · Computer Science 2022-06-15 Chenxia Li , Weiwei Liu , Ruoyu Guo , Xiaoting Yin , Kaitao Jiang , Yongkun Du , Yuning Du , Lingfeng Zhu , Baohua Lai , Xiaoguang Hu , Dianhai Yu , Yanjun Ma

LSH (locality sensitive hashing) had emerged as a powerful technique in nearest-neighbor search in high dimensions [IM98, HIM12]. Given a point set $P$ in a metric space, and given parameters $r$ and $\varepsilon > 0$, the task is to…

Computational Geometry · Computer Science 2017-04-11 Sariel Har-Peled , Sepideh Mahabadi

Low-resource speech recognition has been long-suffering from insufficient training data. In this paper, we propose an approach that leverages neighboring languages to improve low-resource scenario performance, founded on the hypothesis that…

Audio and Speech Processing · Electrical Eng. & Systems 2023-05-02 Qianying Liu , Zhuo Gong , Zhengdong Yang , Yuhang Yang , Sheng Li , Chenchen Ding , Nobuaki Minematsu , Hao Huang , Fei Cheng , Chenhui Chu , Sadao Kurohashi

The integration of Large Language Models (LLMs) into evolutionary frameworks has established a new paradigm for automated heuristic discovery. Despite their promise, these methods typically search in the discrete space of program syntax,…

Artificial Intelligence · Computer Science 2026-05-19 Cheikh Ahmed , Mahdi Mostajabdaveh , Zirui Zhou

Irregular scene text recognition has attracted much attention from the research community, mainly due to the complexity of shapes of text in natural scene. However, recent methods either rely on shape-sensitive modules such as bounding box…

Computer Vision and Pattern Recognition · Computer Science 2020-02-11 Shangbang Long , Yushuo Guan , Kaigui Bian , Cong Yao

Locality-sensitive hashing (LSH) is a fundamental algorithmic technique widely employed in large-scale data processing applications, such as nearest-neighbor search, entity resolution, and clustering. However, its applicability in some…

Information Retrieval · Computer Science 2024-02-01 Runhui Wang , Luyang Kong , Yefan Tao , Andrew Borthwick , Davor Golac , Henrik Johnson , Shadie Hijazi , Dong Deng , Yongfeng Zhang

Locality-sensitive hashing (LSH) is a fundamental technique for similarity search and similarity estimation in high-dimensional spaces. The basic idea is that similar objects should produce hash collisions with probability significantly…

Computational Geometry · Computer Science 2017-09-25 Joachim Gudmundsson , Rasmus Pagh

Relevance Models are well-known retrieval models and capable of producing competitive results. However, because they use query expansion they can be very slow. We address this slowness by incorporating two variants of locality sensitive…

Information Retrieval · Computer Science 2016-07-12 Dominik Wurzer , Miles Osborne , Victor Lavrenko

In this paper, we propose a novel deep neural network framework embedded with low-level features (LCNN) for salient object detection in complex images. We utilise the advantage of convolutional neural networks to automatically learn the…

Computer Vision and Pattern Recognition · Computer Science 2015-08-18 Hongyang Li , Huchuan Lu , Zhe Lin , Xiaohui Shen , Brian Price

Conventional optical character recognition (OCR) techniques segmented each character and then recognized. This made them prone to error in character segmentation, and devoid of context to exploit language models. Advances in sequence to…

Computer Vision and Pattern Recognition · Computer Science 2025-09-01 Shashank Vempati , Nishit Anand , Gaurav Talebailkar , Arpan Garai , Chetan Arora

This study introduces a novel transformer model optimized for large-scale point cloud processing in scientific domains such as high-energy physics (HEP) and astrophysics. Addressing the limitations of graph neural networks and standard…

Machine Learning · Computer Science 2024-06-06 Siqi Miao , Zhiyuan Lu , Mia Liu , Javier Duarte , Pan Li

Just like its remarkable achievements in many computer vision tasks, the convolutional neural networks (CNN) provide an end-to-end solution in handwritten Chinese character recognition (HCCR) with great success. However, the process of…

Computer Vision and Pattern Recognition · Computer Science 2018-11-16 Zhiyuan Li , Min Jin , Qi Wu , Huaxiang Lu

The advent of "OCR 2.0" and large-scale vision-language models (VLMs) has set new benchmarks in text recognition. However, these unified architectures often come with significant computational demands, challenges in precise text…

Computer Vision and Pattern Recognition · Computer Science 2026-03-26 Cheng Cui , Yubo Zhang , Ting Sun , Xueqing Wang , Hongen Liu , Manhui Lin , Yue Zhang , Tingquan Gao , Changda Zhou , Jiaxuan Liu , Zelun Zhang , Jing Zhang , Jun Zhang , Yi Liu