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Weakly-supervised salient object detection (WSOD) aims to develop saliency models using image-level annotations. Despite of the success of previous works, explorations on an effective training strategy for the saliency network and accurate…

Computer Vision and Pattern Recognition · Computer Science 2021-09-07 Yongri Piao , Jian Wang , Miao Zhang , Zhengxuan Ma , Huchuan Lu

Scene text recognition (STR) is a challenging task that requires large-scale annotated data for training. However, collecting and labeling real text images is expensive and time-consuming, which limits the availability of real data.…

Computer Vision and Pattern Recognition · Computer Science 2024-02-27 Mingkun Yang , Biao Yang , Minghui Liao , Yingying Zhu , Xiang Bai

Most text detection methods hypothesize texts are horizontal or multi-oriented and thus define quadrangles as the basic detection unit. However, text in the wild is usually perspectively distorted or curved, which can not be easily tackled…

Computer Vision and Pattern Recognition · Computer Science 2019-01-03 Jiaming Liu , Chengquan Zhang , Yipeng Sun , Junyu Han , Errui Ding

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…

Computer Vision and Pattern Recognition · Computer Science 2018-09-27 Fangneng Zhan , Shijian Lu , Chuhui Xue

Camouflaged object detection (COD) from a single image is a challenging task due to the high similarity between objects and their surroundings. Existing fully supervised methods require labor-intensive pixel-level annotations, making weakly…

Computer Vision and Pattern Recognition · Computer Science 2026-05-26 Xia Li , Xinran Liu , Lin Qi , Junyu Dong

Imagery texts are usually organized as a hierarchy of several visual elements, i.e. characters, words, text lines and text blocks. Among these elements, character is the most basic one for various languages such as Western, Chinese,…

Computer Vision and Pattern Recognition · Computer Science 2017-08-23 Han Hu , Chengquan Zhang , Yuxuan Luo , Yuzhuo Wang , Junyu Han , Errui Ding

It is challenging to detect curve texts due to their irregular shapes and varying sizes. In this paper, we first investigate the deficiency of the existing curve detection methods and then propose a novel Conditional Spatial Expansion (CSE)…

Computer Vision and Pattern Recognition · Computer Science 2019-03-22 Zichuan Liu , Guosheng Lin , Sheng Yang , Fayao Liu , Weisi Lin , Wang Ling Goh

Weakly supervised semantic segmentation is a challenging task as it only takes image-level information as supervision for training but produces pixel-level predictions for testing. To address such a challenging task, most recent…

Computer Vision and Pattern Recognition · Computer Science 2019-11-20 Bingfeng Zhang , Jimin Xiao , Yunchao Wei , Mingjie Sun , Kaizhu Huang

Transcription-only Supervised Text Spotting aims to learn text spotters relying only on transcriptions but no text boundaries for supervision, thus eliminating expensive boundary annotation. The crux of this task lies in locating each…

Computer Vision and Pattern Recognition · Computer Science 2025-01-14 Jingjing Wu , Zhengyao Fang , Pengyuan Lyu , Chengquan Zhang , Fanglin Chen , Guangming Lu , Wenjie Pei

Detecting irregular-shaped text instances is the main challenge for text detection. Existing approaches can be roughly divided into top-down and bottom-up perspective methods. The former encodes text contours into unified units, which…

Computer Vision and Pattern Recognition · Computer Science 2021-10-05 Chuang Yang , Mulin Chen , Yuan Yuan , Qi Wang

One of the most challenges in medical imaging is the lack of data and annotated data. It is proven that classical segmentation methods such as U-NET are useful but still limited due to the lack of annotated data. Using a weakly supervised…

Image and Video Processing · Electrical Eng. & Systems 2020-03-20 Amine Amyar , Romain Modzelewski , Pierre Vera , Vincent Morard , Su Ruan

In this paper, we propose a weakly-supervised approach for 3D object detection, which makes it possible to train a strong 3D detector with position-level annotations (i.e. annotations of object centers). In order to remedy the information…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Xiuwei Xu , Yifan Wang , Yu Zheng , Yongming Rao , Jie Zhou , Jiwen Lu

3D medical image segmentation is a challenging task with crucial implications for disease diagnosis and treatment planning. Recent advances in deep learning have significantly enhanced fully supervised medical image segmentation. However,…

Image and Video Processing · Electrical Eng. & Systems 2025-06-23 Runmin Jiang , Zhaoxin Fan , Junhao Wu , Lenghan Zhu , Xin Huang , Tianyang Wang , Heng Huang , Min Xu

Most previous scene text spotting methods rely on high-quality manual annotations to achieve promising performance. To reduce their expensive costs, we study semi-supervised text spotting (SSTS) to exploit useful information from unlabeled…

Computer Vision and Pattern Recognition · Computer Science 2025-04-15 Dongliang Luo , Hanshen Zhu , Ziyang Zhang , Dingkang Liang , Xudong Xie , Yuliang Liu , Xiang Bai

Weakly supervised multimodal video anomaly detection has gained significant attention, yet the potential of the text modality remains under-explored. Text provides explicit semantic information that can enhance anomaly characterization and…

Computer Vision and Pattern Recognition · Computer Science 2026-02-12 Shengyang Sun , Jiashen Hua , Junyi Feng , Xiaojin Gong

Numerous scene text detection methods have been proposed in recent years. Most of them declare they have achieved state-of-the-art performances. However, the performance comparison is unfair, due to lots of inconsistent settings (e.g.,…

Computer Vision and Pattern Recognition · Computer Science 2021-07-27 Pengwen Dai , Xiaochun Cao

Scene text detection has witnessed rapid development in recent years. However, there still exists two main challenges: 1) many methods suffer from false positives in their text representations; 2) the large scale variance of scene texts…

Computer Vision and Pattern Recognition · Computer Science 2020-04-13 Yuxin Wang , Hongtao Xie , Zhengjun Zha , Mengting Xing , Zilong Fu , Yongdong Zhang

In recent years, the performance of object detection has advanced significantly with the evolving deep convolutional neural networks. However, the state-of-the-art object detection methods still rely on accurate bounding box annotations…

Computer Vision and Pattern Recognition · Computer Science 2017-07-31 Qingyi Tao , Hao Yang , Jianfei Cai

In this paper, we propose a pixel-wise method named TextCohesion for scene text detection, which splits a text instance into five key components: a Text Skeleton and four Directional Pixel Regions. These components are easier to handle than…

Computer Vision and Pattern Recognition · Computer Science 2019-05-01 Weijia Wu , Jici Xing , Hong Zhou

Supervised object detection and semantic segmentation require object or even pixel level annotations. When there exist image level labels only, it is challenging for weakly supervised algorithms to achieve accurate predictions. The accuracy…

Computer Vision and Pattern Recognition · Computer Science 2018-03-06 Weifeng Ge , Sibei Yang , Yizhou Yu
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