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A new local watermarking method based on histogram shifting has been proposed in this paper to deal with various signal processing attacks (e.g. median filtering, JPEG compression and Gaussian noise addition) and geometric attacks (e.g.…

多媒体 · 计算机科学 2023-02-09 Zi-yu Jiang , Chi-Man Pun , Xiao-Chen Yuan , Tong Liu

This paper introduces a novel method for human face detection with its orientation by using wavelet, principle component analysis (PCA) and redial basis networks. The input image is analyzed by two-dimensional wavelet and a two-dimensional…

计算机视觉与模式识别 · 计算机科学 2010-09-28 S. M. Kamruzzaman , Firoz Ahmed Siddiqi , Md. Saiful Islam , Md. Emdadul Haque , Mohammad Shamsul Alam

We propose a novel method that uses convolutional neural networks (CNNs) for feature extraction. Not just limited to conventional spatial domain representation, we use multilevel 2D discrete Haar wavelet transform, where image…

计算机视觉与模式识别 · 计算机科学 2018-01-08 Soumya Ukil , Swarnendu Ghosh , Sk Md Obaidullah , K. C. Santosh , Kaushik Roy , Nibaran Das

Automated signature verification is a critical biometric technique used in banking, identity authentication, and legal documentation. Despite the notable progress achieved by deep learning methods, most approaches in offline signature…

计算机视觉与模式识别 · 计算机科学 2025-10-21 Matheus Ramos Parracho

The wavelet transform has seen success when incorporated into neural network architectures, such as in wavelet scattering networks. More recently, it has been shown that the dual-tree complex wavelet transform can provide better…

信号处理 · 电气工程与系统科学 2018-06-06 Daniel Recoskie , Richard Mann

The lifting scheme of discrete wavelet transform (DWT) is now quite well established as an efficient technique for image compression, and has been incorporated into the JPEG2000 standards. However, the potential of the lifting scheme has…

分布式、并行与集群计算 · 计算机科学 2007-05-23 Chinmoy Bhattacharya , P. R. Mahapatra

For decades, fingerprint recognition has been prevalent for security, forensics, and other biometric applications. However, the availability of good-quality fingerprints is challenging, making recognition difficult. Fingerprint images might…

计算机视觉与模式识别 · 计算机科学 2023-10-03 Ekta Gavas , Anoop Namboodiri

Handwriting recognition is one of the desirable attributes of document comprehension and analysis. It is concerned with the documents writing style and characteristics that distinguish the authors. The diversity of text images, notably in…

计算机视觉与模式识别 · 计算机科学 2022-11-29 Vineet Kumar , Suresh Sundaram

The paper is aimed for a wavelet based steganographic or watermarking technique in frequency domain termed as WASTIR for secret message or image transmission or image authentication. Number system conversion of the secret image by changing…

密码学与安全 · 计算机科学 2013-05-17 Madhumita Sengupta , J. K. Mandal

Identity verification based on authenticity assessment of a handwritten signature is an important issue in biometrics. There are many effective methods for signature verification taking into account dynamics of a signing process. Methods…

计算机视觉与模式识别 · 计算机科学 2016-10-06 Krzysztof Cpalka , Marcin Zalasinski , Leszek Rutkowski

This paper describes the method to recognize offline handwritten characters. A robust algorithm for handwriting segmentation is described here with the help of which individual characters can be segmented from a selected word from a…

计算机视觉与模式识别 · 计算机科学 2015-07-21 Jayati Ghosh Dastidar , Surabhi Sarkar , Rick Punyadyuti Sinha , Kasturi Basu

Recognizing texts from camera images is a known hard problem because of the difficulties in text detection from the varied and complicated background. In this paper we propose a novel and efficient method to detect text region from images…

计算机视觉与模式识别 · 计算机科学 2024-09-17 Basavaraj Kaladagi , Jagadeesh Pujari

This paper proposes a multi-section vector quantization approach for on-line signature recognition. We have used the MCYT database, which consists of 330 users and 25 skilled forgeries per person performed by 5 different impostors. This…

计算机视觉与模式识别 · 计算机科学 2022-03-24 Juan-Manuel Pascual-Gaspar , Marcos Faundez-Zanuy , Carlos Vivaracho

In recent years, the continuous wavelet transform (CWT) has been employed as a spectral feature extractor for acoustic recognition tasks in conjunction with machine learning and deep learning models. However, applying the CWT to each…

音频与语音处理 · 电气工程与系统科学 2025-12-01 Dang Thoai Phan

To improve diagnostic accuracy of breast cancer detection, several researchers have used the wavelet-based tools, which provide additional insight and information for aiding diagnostic decisions. The accuracy of such diagnoses, however, can…

统计方法学 · 统计学 2022-01-25 Minkyoung Kang , William Auffermann , Brani Vidakovic

Recently anomaly detection (AD) has become an important application for target detection in hyperspectral remotely sensed images. In many applications, in addition to high accuracy of detection we need a fast and reliable algorithm as well.…

其他计算机科学 · 计算机科学 2012-01-11 Mohsen Zare Baghbidi , Kamal Jamshidi , Ahmad Reza Naghsh Nilchi , Saeid Homayouni

Writer identification due to its widespread application in various fields has gained popularity over the years. In scenarios where optimum handwriting samples are available, whether they be in the form of a single line, a sentence, or an…

计算机视觉与模式识别 · 计算机科学 2025-10-14 Vineet Kumar , Suresh Sundaram

Handwritten digit recognition remains a fundamental challenge in computer vision, with applications ranging from postal code reading to document digitization. This paper presents an ensemble-based approach that combines Convolutional Neural…

计算机视觉与模式识别 · 计算机科学 2025-03-11 Syed Sajid Ullah , Li Gang , Mudassir Riaz , Ahsan Ashfaq , Salman Khan , Sajawal Khan

The problem of detecting chirps is present in many applications of Signal Processing. Proper denoising, which involves filtering the signals after their acquisition, improves the efficacy of their detection. This manuscript describes how a…

计算工程、金融与科学 · 计算机科学 2023-05-24 Alejandro Silva

There are many difficulties facing a handwritten Arabic recognition system such as unlimited variation in human handwriting, similarities of distinct character shapes, interconnections of neighbouring characters and their position in the…

计算机视觉与模式识别 · 计算机科学 2014-02-27 Ahmed Sahlol , Cheng Suen