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In this paper a novel hand crafted local quadruple pattern (LQPAT) is proposed for facial image recognition and retrieval. Most of the existing hand-crafted descriptors encodes only a limited number of pixels in the local neighbourhood.…

Computer Vision and Pattern Recognition · Computer Science 2022-01-05 Soumendu Chakraborty , Satish Kumar Singh , Pavan Chakraborty

We introduce a method called multi-scale local shape analysis, or MLSA, for extracting features that describe the local structure of points within a dataset. The method uses both geometric and topological features at multiple levels of…

Computational Geometry · Computer Science 2014-10-14 Paul Bendich , Ellen Gasparovic , John Harer , Rauf Izmailov , Linda Ness

Deep learning-based bilateral grid processing has emerged as a promising solution for image enhancement, inherently encoding spatial and intensity information while enabling efficient full-resolution processing through slicing operations.…

Computer Vision and Pattern Recognition · Computer Science 2025-07-17 Junyu Lou , Xiaorui Zhao , Kexuan Shi , Shuhang Gu

Online palmprint recognition and latent palmprint identification are two branches of palmprint studies. The former uses middle-resolution images collected by a digital camera in a well-controlled or contact-based environment with user…

Computer Vision and Pattern Recognition · Computer Science 2019-12-02 Wojciech Michal Matkowski , Tingting Chai , Adams Wai Kin Kong

This paper explores the automated analysis of palmar features using machine learning techniques. We present a computer vision pipeline that extracts key characteristics from palm images, such as principal line structures, texture, and shape…

Computer Vision and Pattern Recognition · Computer Science 2025-09-03 Shweta Patil

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

Local feature detection is a key ingredient of many image processing and computer vision applications, such as visual odometry and localization. Most existing algorithms focus on feature detection from a sharp image. They would thus have…

Computer Vision and Pattern Recognition · Computer Science 2022-11-30 Zhenjun Zhao , Yu Zhai , Ben M. Chen , Peidong Liu

Accurately detecting pedestrians in images plays a critically important role in many computer vision applications. Extraction of effective features is the key to this task. Promising features should be discriminative, robust to various…

Computer Vision and Pattern Recognition · Computer Science 2010-09-20 Yongbin Zheng , Chunhua Shen , Richard Hartley , Xinsheng Huang

In this paper we present the use of Sparse Radial Sampling Local Binary Patterns, a variant of Local Binary Patterns (LBP) for text-as-texture classification. By adapting and extending the standard LBP operator to the particularities of…

Computer Vision and Pattern Recognition · Computer Science 2015-04-24 Anguelos Nicolaou , Andrew D. Bagdanov , Marcus Liwicki , Dimosthenis Karatzas

Texture is an important spatial feature which plays a vital role in content based image retrieval. The enormous growth of the internet and the wide use of digital data have increased the need for both efficient image database creation and…

Computer Vision and Pattern Recognition · Computer Science 2011-11-11 B. Vijayalakshmi , V. Subbiah Bharathi

Accurate and fast extraction of the foreground object is one of the most significant issues to be solved due to its important meaning for object tracking and recognition in video surveillance. Although many foreground object detection…

Computer Vision and Pattern Recognition · Computer Science 2018-10-19 Dongdong Zeng , Ming Zhu , Hang Yang

With the growing use of biometric authentication systems in the past years, spoof fingerprint detection has become increasingly important. In this work, we implement and evaluate two different feature extraction techniques for…

Computer Vision and Pattern Recognition · Computer Science 2015-08-04 Rodrigo Frassetto Nogueira , Roberto de Alencar Lotufo , Rubens Campos Machado

This study conducts an empirical examination of MLP networks investigated through a rigorous methodical experimentation process involving three diverse datasets: TinyFace, Heart Disease, and Iris. Study Overview: The study includes three…

Machine Learning · Computer Science 2025-06-13 Mohammad Subhi Al-Batah , Mowafaq Salem Alzboon , Muhyeeddin Alqaraleh

This review presents a comprehensive survey and benchmark of pulse shape discrimination (PSD) algorithms for radiation detection, classifying nearly sixty methods into statistical (time-domain, frequency-domain, neural network-based) and…

Machine Learning · Computer Science 2026-04-21 Haoran Liu , Yihan Zhan , Mingzhe Liu , Yanhua Liu , Peng Li , Zhuo Zuo , Bingqi Liu , Runxi Liu

Contactless and online palmprint identfication offers improved user convenience, hygiene, user-security and is highly desirable in a range of applications. This technical report details an accurate and generalizable deep learning-based…

Computer Vision and Pattern Recognition · Computer Science 2019-01-01 Yang Liu , Ajay Kumar

In this paper, anew algorithm which is based on geometrical moments and local binary patterns (LBP) for content based image retrieval (CBIR) is proposed. In geometrical moments, each vector is compared with the all other vectors for edge…

Computer Vision and Pattern Recognition · Computer Science 2013-01-14 Mohamed Eisa , Amira Eletrebi , Ebrahim Elhenawy

In this paper we propose the use of multiple local binary patterns(LBPs) to effectively classify land use images. We use the UC Merced 21 class land use image dataset. Task is challenging for classification as the dataset contains intra…

Machine Learning · Computer Science 2019-02-12 Harjot Singh Parmar

The prevalence of smartphone and consumer camera has led to more evidence in the form of digital images, which are mostly taken in uncontrolled and uncooperative environments. In these images, criminals likely hide or cover their faces…

Computer Vision and Pattern Recognition · Computer Science 2023-11-10 Wojciech Michal Matkowski , Xiaojie Li , Adams Wai Kin Kong

Palm vein identification (PVI) is a modern biometric security technique used for increasing security and authentication systems. The key characteristics of palm vein patterns include, its uniqueness to each individual, unforgettable,…

Computer Vision and Pattern Recognition · Computer Science 2020-08-03 Mohammed Hamzah Abed , Ali H. Alsaeedi , Ali D. Alfoudi , Abayomi M. Otebolaku , Yasmeen Sajid Razooqi

For image recognition, an extensive number of methods have been proposed to overcome the high-dimensionality problem of feature vectors being used. These methods vary from unsupervised to supervised, and from statistics to graph-theory…

Computer Vision and Pattern Recognition · Computer Science 2018-01-12 Cigdem Turan , Kin-Man Lam , Xiangjian He