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In this paper, we propose a novel method based on character sequence-to-sequence models to correct documents already processed with Optical Character Recognition (OCR) systems. The main contribution of this paper is a set of strategies to…

Computation and Language · Computer Science 2022-01-26 Juan Ramirez-Orta , Eduardo Xamena , Ana Maguitman , Evangelos Milios , Axel J. Soto

Retrieval-Augmented Generation (RAG) mitigates LLM hallucinations but introduces a critical vulnerability: corpus integrity. We present SilentRetrieval, a two-stage data poisoning attack that hijacks RAG systems through adversarially…

Cryptography and Security · Computer Science 2026-05-28 Jiachen Qian

Neural Networks are being used for character recognition from last many years but most of the work was confined to English character recognition. Till date, a very little work has been reported for Handwritten Farsi Character recognition.…

Computer Vision and Pattern Recognition · Computer Science 2009-09-01 Reza Gharoie Ahangar , Mohammad Farajpoor Ahangar

3D Referring Expression Segmentation (3D-RES) aims to segment 3D objects by correlating referring expressions with point clouds. However, traditional approaches frequently encounter issues like over-segmentation or mis-segmentation, due to…

Computer Vision and Pattern Recognition · Computer Science 2024-12-24 Changli Wu , Qi Chen , Jiayi Ji , Haowei Wang , Yiwei Ma , You Huang , Gen Luo , Hao Fei , Xiaoshuai Sun , Rongrong Ji

The joint training framework for speech enhancement and recognition methods have obtained quite good performances for robust end-to-end automatic speech recognition (ASR). However, these methods only utilize the enhanced feature as the…

Sound · Computer Science 2020-11-10 Cunhang Fan , Jiangyan Yi , Jianhua Tao , Zhengkun Tian , Bin Liu , Zhengqi Wen

State-of-the-art face recognition (FR) models often experience a significant performance drop when dealing with facial images in surveillance scenarios where images are in low quality and often corrupted with noise. Leveraging facial…

Computer Vision and Pattern Recognition · Computer Science 2023-12-18 Md Mahedi Hasan , Shoaib Meraj Sami , Nasser Nasrabadi

There is an immense quantity of historical and cultural documentation that exists only as handwritten manuscripts. At the same time, performing OCR across scripts and different handwriting styles has proven to be an enormously difficult…

Computer Vision and Pattern Recognition · Computer Science 2024-11-01 Lucian Li

Recent progress in deep learning has led to the development of Optical Character Recognition (OCR) systems which perform remarkably well. Most research has been around recurrent networks as well as complex gated layers which make the…

Computer Vision and Pattern Recognition · Computer Science 2022-06-01 Kartik Chaudhary , Raghav Bali

A machine can understand human activities, and the meaning of signs can help overcome the communication barriers between the inaudible and ordinary people. Sign Language Recognition (SLR) is a fascinating research area and a crucial task…

Computer Vision and Pattern Recognition · Computer Science 2024-09-02 M. Madhiarasan , Partha Pratim Roy

Existing super-resolution (SR) models primarily focus on restoring local texture details, often neglecting the global semantic information within the scene. This oversight can lead to the omission of crucial semantic details or the…

Computer Vision and Pattern Recognition · Computer Science 2023-12-22 Haoze Sun , Wenbo Li , Jianzhuang Liu , Haoyu Chen , Renjing Pei , Xueyi Zou , Youliang Yan , Yujiu Yang

Sign language is the primary communication language for people with disabling hearing loss. Sign language recognition (SLR) systems aim to recognize sign gestures and translate them into spoken language. One of the main challenges in SLR is…

Computer Vision and Pattern Recognition · Computer Science 2025-04-24 Hasan Algafri , Hamzah Luqman , Sarah Alyami , Issam Laradji

Fingerspelling is a critical component of British Sign Language (BSL), used to spell proper names, technical terms, and words that lack established lexical signs. Fingerspelling recognition is challenging due to the rapid pace of signing…

Computer Vision and Pattern Recognition · Computer Science 2026-03-23 Alyssa Chan , Taein Kwon , Andrew Zisserman

Speech command recognition (SCR) has been commonly used on resource constrained devices to achieve hands-free user experience. However, in real applications, confusion among commands with similar pronunciations often happens due to the…

Sound · Computer Science 2022-07-05 Zhanheng Yang , Hang Lv , Xiong Wang , Ao Zhang , Lei Xie

Image-text retrieval, as a fundamental and important branch of information retrieval, has attracted extensive research attentions. The main challenge of this task is cross-modal semantic understanding and matching. Some recent works focus…

Computer Vision and Pattern Recognition · Computer Science 2023-04-24 Weijing Chen , Linli Yao , Qin Jin

In recent years, studies on automatic speech recognition (ASR) have shown outstanding results that reach human parity on short speech segments. However, there are still difficulties in standardizing the output of ASR such as capitalization…

Computation and Language · Computer Science 2019-08-08 Binh Nguyen , Vu Bao Hung Nguyen , Hien Nguyen , Pham Ngoc Phuong , The-Loc Nguyen , Quoc Truong Do , Luong Chi Mai

This paper presents the architecture and performance of a novel Multilingual Automatic Speech Recognition (ASR) system developed by the Transsion Speech Team for Track 1 of the MLC-SLM 2025 Challenge. The proposed system comprises three key…

Audio and Speech Processing · Electrical Eng. & Systems 2025-08-22 Xiaoxiao Li , An Zhu , Youhai Jiang , Fengjie Zhu

Although generative facial prior and geometric prior have recently demonstrated high-quality results for blind face restoration, producing fine-grained facial details faithful to inputs remains a challenging problem. Motivated by the…

Computer Vision and Pattern Recognition · Computer Science 2022-07-28 Yuchao Gu , Xintao Wang , Liangbin Xie , Chao Dong , Gen Li , Ying Shan , Ming-Ming Cheng

The growing prevalence of tampered images poses serious security threats, highlighting the urgent need for reliable detection methods. Multimodal large language models (MLLMs) demonstrate strong potential in analyzing tampered images and…

Computer Vision and Pattern Recognition · Computer Science 2026-02-24 Chenfan Qu , Yiwu Zhong , Jian Liu , Xuekang Zhu , Bohan Yu , Lianwen Jin

Artistic text recognition is an extremely challenging task with a wide range of applications. However, current scene text recognition methods mainly focus on irregular text while have not explored artistic text specifically. The challenges…

Computer Vision and Pattern Recognition · Computer Science 2022-08-02 Xudong Xie , Ling Fu , Zhifei Zhang , Zhaowen Wang , Xiang Bai

Optical Character Recognition (OCR) has been a topic of interest for many years. It is defined as the process of digitizing a document image into its constituent characters. Despite decades of intense research, developing OCR with…

Computer Vision and Pattern Recognition · Computer Science 2017-10-17 Noman Islam , Zeeshan Islam , Nazia Noor