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Models based on deep convolutional neural networks (CNN) have significantly improved the performance of semantic segmentation. However, learning these models requires a large amount of training images with pixel-level labels, which are very…

Computer Vision and Pattern Recognition · Computer Science 2018-02-05 Linwei Ye , Zhi Liu , Yang Wang

This paper proposes a new active learning method for semantic segmentation. The core of our method lies in a new annotation query design. It samples informative local image regions (e.g., superpixels), and for each of such regions, asks an…

Computer Vision and Pattern Recognition · Computer Science 2023-11-07 Sehyun Hwang , Sohyun Lee , Hoyoung Kim , Minhyeon Oh , Jungseul Ok , Suha Kwak

Accurate text segmentation results are crucial for text-related generative tasks, such as text image generation, text editing, text removal, and text style transfer. Recently, some scene text segmentation methods have made significant…

Computer Vision and Pattern Recognition · Computer Science 2024-08-02 Xudong Xie , Yuzhe Li , Yang Liu , Zhifei Zhang , Zhaowen Wang , Wei Xiong , Xiang Bai

Driven by deep learning and the large volume of data, scene text recognition has evolved rapidly in recent years. Formerly, RNN-attention based methods have dominated this field, but suffer from the problem of \textit{attention drift} in…

Computer Vision and Pattern Recognition · Computer Science 2020-01-03 Zhaoyi Wan , Minghang He , Haoran Chen , Xiang Bai , Cong Yao

In this paper, we approach the problem of segmentation-free query-by-string word spotting for handwritten documents. In other words, we use methods inspired from computer vision and machine learning to search for words in large collections…

Computer Vision and Pattern Recognition · Computer Science 2017-08-18 Tomas Wilkinson , Jonas Lindström , Anders Brun

Multimodal Large Language Models (MLLMs) have shown exceptional capabilities in vision-language tasks; however, effectively integrating image segmentation into these models remains a significant challenge. In this paper, we introduce…

Computer Vision and Pattern Recognition · Computer Science 2025-02-18 Mengcheng Lan , Chaofeng Chen , Yue Zhou , Jiaxing Xu , Yiping Ke , Xinjiang Wang , Litong Feng , Wayne Zhang

Handwritten document-image binarization is a semantic segmentation process to differentiate ink pixels from background pixels. It is one of the essential steps towards character recognition, writer identification, and script-style evolution…

Computer Vision and Pattern Recognition · Computer Science 2026-01-06 Maruf A. Dhali , Jan Willem de Wit , Lambert Schomaker

Historical maps are valuable resources that capture detailed geographical information from the past. However, these maps are typically available in printed formats, which are not conducive to modern computer-based analyses. Digitizing these…

Computer Vision and Pattern Recognition · Computer Science 2025-01-06 Yunshuang Yuan , Frank Thiemann , Monika Sester

This paper presents a Convolutional Neural Network (CNN) based page segmentation method for handwritten historical document images. We consider page segmentation as a pixel labeling problem, i.e., each pixel is classified as one of the…

Computer Vision and Pattern Recognition · Computer Science 2017-04-10 Kai Chen , Mathias Seuret

In this paper we present a bottom up procedure for segmentation of text lines written or printed in the Latin script. The proposed method uses a combination of image morphology, feature extraction and Gaussian mixture model to perform this…

Computer Vision and Pattern Recognition · Computer Science 2017-10-10 Himanshu Jain , Archana Praveen Kumar

Text line detection is a key task in historical document analysis facing many challenges of arbitrary-shaped text lines, dense texts, and text lines with high aspect ratios, etc. In this paper, we propose a general framework for historical…

Computation and Language · Computer Science 2024-07-09 Xingjian Hu , Baole Wei , Liangcai Gao , Jun Wang

Semantic segmentation is crucial in remote sensing, where high-resolution satellite images are segmented into meaningful regions. Recent advancements in deep learning have significantly improved satellite image segmentation. However, most…

Computer Vision and Pattern Recognition · Computer Science 2024-08-07 Santiago Rivier , Carlos Hinojosa , Silvio Giancola , Bernard Ghanem

Models for semantic segmentation require a large amount of hand-labeled training data which is costly and time-consuming to produce. For this purpose, we present a label fusion framework that is capable of improving semantic pixel labels of…

Computer Vision and Pattern Recognition · Computer Science 2022-02-25 Florian Fervers , Timo Breuer , Gregor Stachowiak , Sebastian Bullinger , Christoph Bodensteiner , Michael Arens

Line separators are used to segregate text-lines from one another in document image analysis. Finding the separator points at every line terminal in a document image would enable text-line segmentation. In particular, identifying the…

Computer Vision and Pattern Recognition · Computer Science 2017-08-21 Amarnath R , P. Nagabhushan

Semantic segmentation is the pixel-wise labelling of an image. Since the problem is defined at the pixel level, determining image class labels only is not acceptable, but localising them at the original image pixel resolution is necessary.…

Computer Vision and Pattern Recognition · Computer Science 2022-03-17 Irem Ulku , Erdem Akagunduz

Deep neural networks have enabled major progresses in semantic segmentation. However, even the most advanced neural architectures suffer from important limitations. First, they are vulnerable to catastrophic forgetting, i.e. they perform…

Computer Vision and Pattern Recognition · Computer Science 2022-02-01 Fabio Cermelli , Massimiliano Mancini , Samuel Rota Buló , Elisa Ricci , Barbara Caputo

This work presents a two-stage text line detection method for historical documents. Each detected text line is represented by its baseline. In a first stage, a deep neural network called ARU-Net labels pixels to belong to one of the three…

Computer Vision and Pattern Recognition · Computer Science 2019-07-31 Tobias Grüning , Gundram Leifert , Tobias Strauß , Johannes Michael , Roger Labahn

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

From the literature, it is demonstrated that performing text-line segmentation directly in the run-length compressed handwritten document images significantly reduces the computational time and memory space. In this paper, we investigate…

Computer Vision and Pattern Recognition · Computer Science 2019-09-12 Amarnath R , P. Nagabhushan , Mohammed Javed

Semantic segmentation is a computer vision task where classification is performed at a pixel level. Due to this, the process of labeling images for semantic segmentation is time-consuming and expensive. To mitigate this cost there has been…

Computer Vision and Pattern Recognition · Computer Science 2025-01-07 Javier Montalvo , Álvaro García-Martín , Pablo Carballeira , Juan C. SanMiguel