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This paper presents Mask-aware Intersection-over-Union (maIoU) for assigning anchor boxes as positives and negatives during training of instance segmentation methods. Unlike conventional IoU or its variants, which only considers the…

Computer Vision and Pattern Recognition · Computer Science 2021-10-20 Kemal Oksuz , Baris Can Cam , Fehmi Kahraman , Zeynep Sonat Baltaci , Sinan Kalkan , Emre Akbas

Extremely low-light text images are common in natural scenes, making scene text detection and recognition challenging. One solution is to enhance these images using low-light image enhancement methods before text extraction. However,…

Computer Vision and Pattern Recognition · Computer Science 2024-04-23 Che-Tsung Lin , Chun Chet Ng , Zhi Qin Tan , Wan Jun Nah , Xinyu Wang , Jie Long Kew , Pohao Hsu , Shang Hong Lai , Chee Seng Chan , Christopher Zach

Existing vision-language model (VLM)-based methods for out-of-distribution (OOD) detection typically rely on similarity scores between input images and in-distribution (ID) text prototypes. However, the modality gap between image and text…

Computer Vision and Pattern Recognition · Computer Science 2026-01-27 Yimu Wang , Evelien Riddell , Adrian Chow , Sean Sedwards , Krzysztof Czarnecki

Detecting incidental scene text is a challenging task because of multi-orientation, perspective distortion, and variation of text size, color and scale. Retrospective research has only focused on using rectangular bounding box or horizontal…

Computer Vision and Pattern Recognition · Computer Science 2017-03-07 Yuliang Liu , Lianwen Jin

In this paper, we introduce an innovative method to improve the convergence speed and accuracy of object detection neural networks. Our approach, CONVERGE-FAST-AUXNET, is based on employing multiple, dependent loss metrics and weighting…

Computer Vision and Pattern Recognition · Computer Science 2018-08-15 Benjamin Schnieders , Karl Tuyls

Scene text detection has witnessed rapid progress especially with the recent development of convolutional neural networks. However, there still exists two challenges which prevent the algorithm into industry applications. On the one hand,…

Computer Vision and Pattern Recognition · Computer Science 2019-07-30 Wenhai Wang , Enze Xie , Xiang Li , Wenbo Hou , Tong Lu , Gang Yu , Shuai Shao

Multi-object tracking (MOT) methods often rely on Intersection-over-Union (IoU) for association. However, this becomes unreliable when objects are similar or occluded. Also, computing IoU for segmentation masks is computationally expensive.…

Computer Vision and Pattern Recognition · Computer Science 2025-10-14 Milad Khanchi , Maria Amer , Charalambos Poullis

As large-scale, pre-trained language models achieve human-level and superhuman accuracy on existing language understanding tasks, statistical bias in benchmark data and probing studies have recently called into question their true…

Computation and Language · Computer Science 2021-09-13 Shane Storks , Joyce Chai

Unifying text detection and text recognition in an end-to-end training fashion has become a new trend for reading text in the wild, as these two tasks are highly relevant and complementary. In this paper, we investigate the problem of scene…

Computer Vision and Pattern Recognition · Computer Science 2019-08-23 Minghui Liao , Pengyuan Lyu , Minghang He , Cong Yao , Wenhao Wu , Xiang Bai

Incidental scene text detection, especially for multi-oriented text regions, is one of the most challenging tasks in many computer vision applications. Different from the common object detection task, scene text often suffers from a large…

Computer Vision and Pattern Recognition · Computer Science 2018-05-09 Qiangpeng Yang , Mengli Cheng , Wenmeng Zhou , Yan Chen , Minghui Qiu , Wei Lin , Wei Chu

Recognizing scene text is a challenging problem, even more so than the recognition of scanned documents. This problem has gained significant attention from the computer vision community in recent years, and several methods based on energy…

Computer Vision and Pattern Recognition · Computer Science 2016-03-24 Anand Mishra , Karteek Alahari , C. V. Jawahar

The challenges of shape robust text detection lie in two aspects: 1) most existing quadrangular bounding box based detectors are difficult to locate texts with arbitrary shapes, which are hard to be enclosed perfectly in a rectangle; 2)…

Computer Vision and Pattern Recognition · Computer Science 2018-06-08 Xiang Li , Wenhai Wang , Wenbo Hou , Ruo-Ze Liu , Tong Lu , Jian Yang

Text-to-image generative models have achieved impressive fidelity and diversity, but can inadvertently produce unsafe or undesirable content due to implicit biases embedded in large-scale training datasets. Existing concept erasure methods,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-20 Jun Li , Lizhi Xiong , Ziqiang Li , Weiwei Jiang , Zhangjie Fu , Yong Li , Guo-Sen Xie

Segmentation has emerged as a fundamental field of computer vision and natural language processing, which assigns a label to every pixel/feature to extract regions of interest from an image/text. To evaluate the performance of segmentation,…

Machine Learning · Statistics 2023-11-14 Ben Dai , Chunlin Li

The widespread usage of large-scale multimodal models like CLIP has heightened concerns about the leakage of PII. Existing methods for identity inference in CLIP models require querying the model with full PII, including textual…

Machine Learning · Computer Science 2025-03-26 Songze Li , Ruoxi Cheng , Xiaojun Jia

Reading text from images remains challenging due to multi-orientation, perspective distortion and especially the curved nature of irregular text. Most of existing approaches attempt to solve the problem in two or multiple stages, which is…

Computer Vision and Pattern Recognition · Computer Science 2018-12-27 Yipeng Sun , Chengquan Zhang , Zuming Huang , Jiaming Liu , Junyu Han , Errui Ding

Previous approaches for scene text detection usually rely on manually defined sliding windows. This work presents an intuitive two-stage region-based method to detect multi-oriented text without any prior knowledge regarding the textual…

Computer Vision and Pattern Recognition · Computer Science 2019-06-04 Linjie Deng , Yanxiang Gong , Yi Lin , Jingwen Shuai , Xiaoguang Tu , Yuefei Zhang , Zheng Ma , Mei Xie

Modern oriented object detectors typically predict a set of bounding boxes and select the top-ranked ones based on estimated localization quality. Achieving high detection performance requires that the estimated quality closely aligns with…

Computer Vision and Pattern Recognition · Computer Science 2025-11-12 Yunhui Zhu , Buliao Huang

We present a new method to detect anomalies in texts (in general: in sequences of any data), using language models, in a totally unsupervised manner. The method considers probabilities (likelihoods) generated by a language model, but…

Computation and Language · Computer Science 2024-09-06 Filip Graliński , Ryszard Staruch , Krzysztof Jurkiewicz

In light of the mounting imperative for public security, the necessity for automated threat detection in high-risk scenarios is becoming increasingly pressing. However, existing methods generally suffer from the problems of uninterpretable…

Computer Vision and Pattern Recognition · Computer Science 2025-07-29 Yuhan Wang , Cheng Liu , Daou Zhang , Zihan Zhao , Jinyang Chen , Purui Dong , Zuyuan Yu , Ziru Wang , Weichao Wu