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Developing robot perception systems for recognizing objects in the real-world requires computer vision algorithms to be carefully scrutinized with respect to the expected operating domain. This demands large quantities of ground truth data…

机器人学 · 计算机科学 2019-03-04 Markus Suchi , Timothy Patten , David Fischinger , Markus Vincze

In this paper we introduce a method that significantly reduces the character error rates for OCR text obtained from OCRopus models trained on early printed books. The method uses a combination of cross fold training and confidence based…

计算机视觉与模式识别 · 计算机科学 2018-07-25 Christian Reul , Uwe Springmann , Christoph Wick , Frank Puppe

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

We present OCR-Quality, a comprehensive human-annotated dataset designed for evaluating and developing OCR quality assessment methods. The dataset consists of 1,000 PDF pages converted to PNG images at 300 DPI, sampled from diverse…

计算机视觉与模式识别 · 计算机科学 2025-10-28 Yulong Zhang

Contemporary deep learning techniques have made image recognition a reasonably reliable technology. However training effective photo classifiers typically takes numerous examples which limits image recognition's scalability and…

计算机视觉与模式识别 · 计算机科学 2018-05-01 Conghui Hu , Da Li , Yi-Zhe Song , Tao Xiang , Timothy M. Hospedales

We present the Recognize Anything Model (RAM): a strong foundation model for image tagging. RAM makes a substantial step for large models in computer vision, demonstrating the zero-shot ability to recognize any common category with high…

计算机视觉与模式识别 · 计算机科学 2023-06-12 Youcai Zhang , Xinyu Huang , Jinyu Ma , Zhaoyang Li , Zhaochuan Luo , Yanchun Xie , Yuzhuo Qin , Tong Luo , Yaqian Li , Shilong Liu , Yandong Guo , Lei Zhang

Optical Character Recognition (OCR) technology finds applications in digitizing books and unstructured documents, along with applications in other domains such as mobility statistics, law enforcement, traffic, security systems, etc. The…

计算机视觉与模式识别 · 计算机科学 2023-07-11 Aishik Rakshit , Samyak Mehta , Anirban Dasgupta

Classification based on Zero-shot Learning (ZSL) is the ability of a model to classify inputs into novel classes on which the model has not previously seen any training examples. Providing an auxiliary descriptor in the form of a set of…

计算机视觉与模式识别 · 计算机科学 2024-01-31 Samuele Ruffino , Geethan Karunaratne , Michael Hersche , Luca Benini , Abu Sebastian , Abbas Rahimi

Recognizing unseen fine-grained categories demands a model that can distinguish subtle visual differences. This is typically achieved by transferring visual-attribute relationships from seen classes to unseen classes. The core challenge is…

计算机视觉与模式识别 · 计算机科学 2025-12-16 Zhi Chen , Jingcai Guo , Taotao Cai , Yuxiang Cai

Since the dawn of the computing era, information has been represented digitally so that it can be processed by electronic computers. Paper books and documents were abundant and widely being published at that time; and hence, there was a…

计算与语言 · 计算机科学 2012-04-03 Youssef Bassil , Mohammad Alwani

Detection and recognition of text from scans and other images, commonly denoted as Optical Character Recognition (OCR), is a widely used form of automated document processing with a number of methods available. Yet OCR systems still do not…

计算机视觉与模式识别 · 计算机科学 2023-01-24 Krzysztof Olejniczak , Milan Šulc

In recent years, text-image joint pre-training techniques have shown promising results in various tasks. However, in Optical Character Recognition (OCR) tasks, aligning text instances with their corresponding text regions in images poses a…

计算机视觉与模式识别 · 计算机科学 2024-04-18 Chen Duan , Pei Fu , Shan Guo , Qianyi Jiang , Xiaoming Wei

A crucial component for the scene text based reasoning required for TextVQA and TextCaps datasets involve detecting and recognizing text present in the images using an optical character recognition (OCR) system. The current systems are…

计算机视觉与模式识别 · 计算机科学 2021-05-13 Amanpreet Singh , Guan Pang , Mandy Toh , Jing Huang , Wojciech Galuba , Tal Hassner

Zero-shot denoisers address the dataset dependency of deep-learning-based denoisers, enabling the denoising of unseen single images. Nonetheless, existing zero-shot methods suffer from long training times and rely on the assumption of noise…

计算机视觉与模式识别 · 计算机科学 2025-10-15 Yanlin Jiang , Yuchen Liu , Mingren Liu

The biggest challenge in the field of image processing is to recognize documents both in printed and handwritten format. Optical Character Recognition OCR is a type of document image analysis where scanned digital image that contains either…

计算机视觉与模式识别 · 计算机科学 2016-12-05 Singh Vijendra , Nisha Vasudeva , Hem Jyotsana Parashar

In this paper, we evaluate state-of-the-art OCR methods on Egocentric data. We annotate text in EPIC-KITCHENS images, and demonstrate that existing OCR methods struggle with rotated text, which is frequently observed on objects being…

计算机视觉与模式识别 · 计算机科学 2022-06-14 Valentin Popescu , Dima Damen , Toby Perrett

Optical Character Recognition (OCR) on historical printings is a challenging task mainly due to the complexity of the layout and the highly variant typography. Nevertheless, in the last few years great progress has been made in the area of…

Optical character recognition (OCR) is widely applied in real applications serving as a key preprocessing tool. The adoption of deep neural network (DNN) in OCR results in the vulnerability against adversarial examples which are crafted to…

计算机视觉与模式识别 · 计算机科学 2020-02-11 Lu Chen , Wei Xu

Annotating words in a historical document image archive for word image recognition purpose demands time and skilled human resource (like historians, paleographers). In a real-life scenario, obtaining sample images for all possible words is…

计算机视觉与模式识别 · 计算机科学 2022-12-22 Ravi Bhatt , Anuj Rai , Narayanan C. Krishnan , Sukalpa Chanda

The contribution of this paper is fourfold. The first contribution is a novel, generic method for automatic ground truth generation of camera-captured document images (books, magazines, articles, invoices, etc.). It enables us to build…

计算机视觉与模式识别 · 计算机科学 2016-05-05 Sheraz Ahmed , Muhammad Imran Malik , Muhammad Zeshan Afzal , Koichi Kise , Masakazu Iwamura , Andreas Dengel , Marcus Liwicki