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In recent years, tremendous efforts have been made on document image rectification, but existing advanced algorithms are limited to processing restricted document images, i.e., the input images must incorporate a complete document. Once the…

计算机视觉与模式识别 · 计算机科学 2023-12-19 Hao Feng , Shaokai Liu , Jiajun Deng , Wengang Zhou , Houqiang Li

While image-text representation learning has become very popular in recent years, existing models tend to lack spatial awareness and have limited direct applicability for dense understanding tasks. For this reason, self-supervised…

Optical Character Recognition (OCR) systems have been widely used in various applications for extracting semantic information from images. To give the user more control over their privacy, an on-device solution is needed. The current…

计算机视觉与模式识别 · 计算机科学 2022-01-03 Rachit S Munjal , Arun D Prabhu , Nikhil Arora , Sukumar Moharana , Gopi Ramena

Scene Text Recognition (STR) is an important and challenging upstream task for building structured information databases, that involves recognizing text within images of natural scenes. Although current state-of-the-art (SOTA) models for…

计算机视觉与模式识别 · 计算机科学 2024-08-21 Xianfu Cheng , Weixiao Zhou , Xiang Li , Jian Yang , Hang Zhang , Tao Sun , Wei Zhang , Yuying Mai , Tongliang Li , Xiaoming Chen , Zhoujun Li

Context-aware methods have achieved remarkable advancements in supervised scene text recognition by leveraging semantic priors from words. Considering the heterogeneity of text and background in STR, we propose that such contextual priors…

计算机视觉与模式识别 · 计算机科学 2024-11-20 Tiancheng Lin , Jinglei Zhang , Yi Xu , Kai Chen , Rui Zhang , Chang-Wen Chen

Scene Text Image Super-resolution (STISR) has recently achieved great success as a preprocessing method for scene text recognition. STISR aims to transform blurred and noisy low-resolution (LR) text images in real-world settings into clear…

计算机视觉与模式识别 · 计算机科学 2023-12-25 Chihiro Noguchi , Shun Fukuda , Masao Yamanaka

For successful scene text recognition (STR) models, synthetic text image generators have alleviated the lack of annotated text images from the real world. Specifically, they generate multiple text images with diverse backgrounds, font…

计算机视觉与模式识别 · 计算机科学 2021-07-21 Moonbin Yim , Yoonsik Kim , Han-Cheol Cho , Sungrae Park

Scene text recognition (STR) and handwritten text recognition (HTR) face significant challenges in accurately transcribing textual content from images into machine-readable formats. Conventional OCR models often predict transcriptions…

计算机视觉与模式识别 · 计算机科学 2026-03-05 Xu Yao , Lei Kang

Existing scene text detection methods typically rely on extensive real data for training. Due to the lack of annotated real images, recent works have attempted to exploit large-scale labeled synthetic data (LSD) for pre-training text…

计算机视觉与模式识别 · 计算机科学 2024-07-11 Tongkun Guan , Wei Shen , Xue Yang , Xuehui Wang , Xiaokang Yang

Recent scene text detection methods are almost based on deep learning and data-driven. Synthetic data is commonly adopted for pre-training due to expensive annotation cost. However, there are obvious domain discrepancies between synthetic…

计算机视觉与模式识别 · 计算机科学 2022-05-11 Youhui Guo , Yu Zhou , Xugong Qin , Enze Xie , Weiping Wang

Contrary to popular belief, Optical Character Recognition (OCR) remains a challenging problem when text occurs in unconstrained environments, like natural scenes, due to geometrical distortions, complex backgrounds, and diverse fonts. In…

计算机视觉与模式识别 · 计算机科学 2019-06-06 Marcin Namysl , Iuliu Konya

Scene text erasing, which replaces text regions with reasonable content in natural images, has drawn significant attention in the computer vision community in recent years. There are two potential subtasks in scene text erasing: text…

计算机视觉与模式识别 · 计算机科学 2021-12-06 Zhengmi Tang , Tomo Miyazaki , Yoshihiro Sugaya , Shinichiro Omachi

Customized text-to-image generation, which aims to learn user-specified concepts with a few images, has drawn significant attention recently. However, existing methods usually suffer from overfitting issues and entangle the…

计算机视觉与模式识别 · 计算机科学 2023-12-20 Yufei Cai , Yuxiang Wei , Zhilong Ji , Jinfeng Bai , Hu Han , Wangmeng Zuo

Text recognition remains a fundamental and extensively researched topic in computer vision, largely owing to its wide array of commercial applications. The challenging nature of the very problem however dictated a fragmentation of research…

计算机视觉与模式识别 · 计算机科学 2021-07-29 Ayan Kumar Bhunia , Aneeshan Sain , Pinaki Nath Chowdhury , Yi-Zhe Song

Detection Transformers (DETR) are renowned object detection pipelines, however computationally efficient multiscale detection using DETR is still challenging. In this paper, we propose a Cross-Resolution Encoding-Decoding (CRED) mechanism…

计算机视觉与模式识别 · 计算机科学 2024-10-08 Ashish Kumar , Jaesik Park

Inspired by the great success of language model (LM)-based pre-training, recent studies in visual document understanding have explored LM-based pre-training methods for modeling text within document images. Among them, pre-training that…

计算机视觉与模式识别 · 计算机科学 2023-09-25 Daehee Kim , Yoonsik Kim , DongHyun Kim , Yumin Lim , Geewook Kim , Taeho Kil

Recovering sharp images from dual-pixel (DP) pairs with disparity-dependent blur is a challenging task.~Existing blur map-based deblurring methods have demonstrated promising results. In this paper, we propose, to the best of our knowledge,…

计算机视觉与模式识别 · 计算机科学 2023-11-22 Hao Yang , Liyuan Pan , Yan Yang , Richard Hartley , Miaomiao Liu

Motivated by the remarkable achievements of DETR-based approaches on COCO object detection and segmentation benchmarks, recent endeavors have been directed towards elevating their performance through self-supervised pre-training of…

计算机视觉与模式识别 · 计算机科学 2023-12-04 Yan Ma , Weicong Liang , Bohan Chen , Yiduo Hao , Bojian Hou , Xiangyu Yue , Chao Zhang , Yuhui Yuan

Scene text image super-resolution (STISR) aims to simultaneously increase the resolution and legibility of the text images, and the resulting images will significantly affect the performance of downstream tasks. Although numerous progress…

计算机视觉与模式识别 · 计算机科学 2023-12-01 Shipeng Zhu , Zuoyan Zhao , Pengfei Fang , Hui Xue

The requirement of large amounts of annotated images has become one grand challenge while training deep neural network models for various visual detection and recognition tasks. This paper presents a novel image synthesis technique that…

计算机视觉与模式识别 · 计算机科学 2018-09-27 Fangneng Zhan , Shijian Lu , Chuhui Xue