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While image registration has been studied in remote sensing community for decades, registering multimodal data [e.g., optical, LiDAR, SAR, and map] remains a challenging problem because of significant nonlinear intensity differences between…

Computer Vision and Pattern Recognition · Computer Science 2021-04-01 Yuanxin Ye , Lorenzo Bruzzone , Jie Shan , Francesca Bovolo , Qing Zhu

Internet banking (IB) continues to face security concerns arising from illegal access to users accounts. Use of personal identification numbers (PIN) as a single authentication method for IB users is prone to insecurities such as phishing,…

Cryptography and Security · Computer Science 2021-05-21 Cherinor Umaru Bah , Afzaal Hussain Seyal , Umar Yahya

The Local Binary Patterns (LBP) is a local descriptor proposed by Ojala et al to discriminate texture due to its discriminative power. However, the LBP is sensitive to noise and illumination changes. Consequently, several extensions to the…

Computer Vision and Pattern Recognition · Computer Science 2018-10-30 Yasin Musa Ayami , Aboubayda Shabat , Delene Heukelman

Face identification systems operating in the ciphertext domain have garnered significant attention due to increasing privacy concerns and the potential recovery of original facial data. However, as the size of ciphertext template libraries…

Computer Vision and Pattern Recognition · Computer Science 2025-07-04 Rundong Xin , Taotao Wang , Jin Wang , Chonghe Zhao , Jing Wang

Automatic facial expression analysis is a challenging issue and influenced so many areas such as human computer interaction. Due to the uncertainties of the light intensity and light direction, the face gray shades are uneven and the…

Computer Vision and Pattern Recognition · Computer Science 2015-03-06 Sahar Hooshmand , Ali Jamali Avilaq , Amir Hossein Rezaie

Feature description is one of the most frequently studied areas in the expert systems and machine learning. Effective encoding of the images is an essential requirement for accurate matching. These encoding schemes play a significant role…

Computer Vision and Pattern Recognition · Computer Science 2022-01-04 Soumendu Chakraborty , Satish Kumar Singh , Pavan Chakraborty

Face detection, as a fundamental technology for various applications, is always deployed on edge devices which have limited memory storage and low computing power. This paper introduces a Light and Fast Face Detector (LFFD) for edge…

Computer Vision and Pattern Recognition · Computer Science 2019-08-13 Yonghao He , Dezhong Xu , Lifang Wu , Meng Jian , Shiming Xiang , Chunhong Pan

Encoded Local Projections (ELP) is a recently introduced dense sampling image descriptor which uses projections in small neighbourhoods to construct a histogram/descriptor for the entire image. ELP has shown to be as accurate as other…

Computer Vision and Pattern Recognition · Computer Science 2018-09-18 Dhruv Sharma , Sarim Zafar , Morteza Babaie , H. R. Tizhoosh

In this paper R-Theta Local Neighborhood Pattern (RTLNP) is proposed for facial image retrieval. RTLNP exploits relationships amongst the pixels in local neighborhood of the reference pixel at different angular and radial widths. The…

Computer Vision and Pattern Recognition · Computer Science 2022-01-04 Soumendu Chakraborty , Satish Kumar Singh , Pavan Chakraborty

The local descriptors have been the backbone of most of the computer vision problems. Most of the existing local descriptors are generated over the raw input images. In order to increase the discriminative power of the local descriptors,…

Computer Vision and Pattern Recognition · Computer Science 2018-12-05 Shiv Ram Dubey

With the widespread sharing of personal face images in applications' public databases, face recognition systems faces real threat of being breached by potential adversaries who are able to access users' face images and use them to intrude…

Computer Vision and Pattern Recognition · Computer Science 2024-08-02 Lu Ou , Shaolin Liao , Shihui Gao , Guandong Huang , Zheng Qi

We present an improved Locality Preserving Projections (LPP) method, named Gloablity-Locality Preserving Projections (GLPP), to preserve both the global and local geometric structures of data. In our approach, an additional constraint of…

Computer Vision and Pattern Recognition · Computer Science 2013-11-07 Sheng Huang , Dan Yang , Fei Yang , Yongxin Ge , Xiaohong Zhang , Jiwen Lu

Mobile behavioral biometrics have become a popular topic of research, reaching promising results in terms of authentication, exploiting a multimodal combination of touchscreen and background sensor data. However, there is no way of knowing…

Computer Vision and Pattern Recognition · Computer Science 2022-10-05 Giuseppe Stragapede , Ruben Vera-Rodriguez , Ruben Tolosana , Aythami Morales

As the features from the traditional Local Binary Patterns (LBP) and Local Directional Patterns (LDP) are found to be ineffective for face recognition, we have proposed a new approach derived on the basis of Information sets whereby the…

Computer Vision and Pattern Recognition · Computer Science 2014-11-04 Abdullah Gubbi , Mohammad Fazle Azeem , M Sharmila Kumari

A light-weight low-resolution face gender classification method, called FaceHop, is proposed in this research. We have witnessed rapid progress in face gender classification accuracy due to the adoption of deep learning (DL) technology.…

Computer Vision and Pattern Recognition · Computer Science 2020-11-16 Mozhdeh Rouhsedaghat , Yifan Wang , Xiou Ge , Shuowen Hu , Suya You , C. -C. Jay Kuo

Thermal infra-red (IR) images focus on changes of temperature distribution on facial muscles and blood vessels. These temperature changes can be regarded as texture features of images. A comparative study of face recognition methods working…

Computer Vision and Pattern Recognition · Computer Science 2013-09-05 Ayan Seal , Suranjan Ganguly , Debotosh Bhattacharjee , Mita Nasipuri , Dipak Kumar Basu

Traditional authentication systems that rely on simple passwords, PIN numbers or tokens have many security issues, like easily guessed passwords, PIN numbers written on the back of cards, etc. Thus, biometric authentication methods that…

Cryptography and Security · Computer Science 2021-09-08 Richard Brown , Gueltoum Bendiab , Stavros Shiaeles , Bogdan Ghita

Biometrics authentication has become increasingly popular due to its security and convenience; however, traditional biometrics are becoming less desirable in scenarios such as new mobile devices, Virtual Reality, and Smart Vehicles. For…

Computer Vision and Pattern Recognition · Computer Science 2025-11-10 Huashan Chen , Yifan Xu , Yue Feng , Ming Jian , Feng Liu , Pengfei Hu , Kebin Peng , Sen He , Zi Wang

In this paper, we propose an intelligent embedded system for monitoring class attendance and sending the attendance list to a remote computer. The proposed system consists of two parts : an embedded device (Raspberry with PI camera) for…

Artificial Intelligence · Computer Science 2024-06-21 Touzene Abderraouf , Abed Abdeljalil Wassim , Slimane Larabi

Iris-based biometric identification is increasingly recognized for its significant accuracy and long-term stability compared to other biometric modalities such as fingerprints or facial features. However, all biometric modalities are highly…

Cryptography and Security · Computer Science 2026-03-31 Christina Karakosta , Lian Alhedaithy , William J. Knottenbelt