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We present ZeroRF, a novel per-scene optimization method addressing the challenge of sparse view 360{\deg} reconstruction in neural field representations. Current breakthroughs like Neural Radiance Fields (NeRF) have demonstrated…

Computer Vision and Pattern Recognition · Computer Science 2023-12-15 Ruoxi Shi , Xinyue Wei , Cheng Wang , Hao Su

Although significant progress has been made in face recognition, demographic bias still exists in face recognition systems. For instance, it usually happens that the face recognition performance for a certain demographic group is lower than…

Computer Vision and Pattern Recognition · Computer Science 2022-11-29 Fu-En Wang , Chien-Yi Wang , Min Sun , Shang-Hong Lai

This paper focuses on solving unconstrained privacy-preserving black-box optimization (PBBO), its corresponding least Frobenius norm updating of quadratic models, and the differentially privacy mechanisms for PBBO. Optimization problems…

Cryptography and Security · Computer Science 2026-01-21 Pengcheng Xie

A face morph is created by combining the face images usually pertaining to two distinct identities. The goal is to generate an image that can be matched with two identities thereby undermining the security of a face recognition system. To…

Computer Vision and Pattern Recognition · Computer Science 2024-08-21 Nitish Shukla , Arun Ross

We study a new family of inverse problems for recovering representations of corrupted data. We assume access to a pre-trained representation learning network R(x) that operates on clean images, like CLIP. The problem is to recover the…

Machine Learning · Computer Science 2021-10-28 Sriram Ravula , Georgios Smyrnis , Matt Jordan , Alexandros G. Dimakis

Deep learning models are used in safety-critical tasks such as automated driving and face recognition. However, small perturbations in the model input can significantly change the predictions. Adversarial attacks are used to identify small…

Cryptography and Security · Computer Science 2025-12-03 Issa Oe , Keiichiro Yamamura , Hiroki Ishikura , Ryo Hamahira , Katsuki Fujisawa

Face recognition system is one of the esteemed research areas in pattern recognition and computer vision as long as its major challenges. A few challenges in recognizing faces are blur, illumination, and varied expressions. Blur is natural…

Computer Vision and Pattern Recognition · Computer Science 2019-03-01 Anubha Pearline. S , Hemalatha. M

Pose-invariant face recognition has become a challenging problem for modern AI-based face recognition systems. It aims at matching a profile face captured in the wild with a frontal face registered in a database. Existing methods perform…

Computer Vision and Pattern Recognition · Computer Science 2025-05-23 Nikolay Stanishev , Yuhang Lu , Touradj Ebrahimi

Blind face restoration has made great progress in producing high-quality and lifelike images. Yet it remains challenging to preserve the ID information especially when the degradation is heavy. Current reference-guided face restoration…

Computer Vision and Pattern Recognition · Computer Science 2024-11-22 Jiacheng Ying , Mushui Liu , Zhe Wu , Runming Zhang , Zhu Yu , Siming Fu , Si-Yuan Cao , Chao Wu , Yunlong Yu , Hui-Liang Shen

With the advancement of face recognition (FR) systems, privacy-preserving face recognition (PPFR) systems have gained popularity for their accurate recognition, enhanced facial privacy protection, and robustness to various attacks. However,…

Computer Vision and Pattern Recognition · Computer Science 2026-02-16 Dong Han , Yong Li , Joachim Denzler

Deep neural network (DNN) architecture based models have high expressive power and learning capacity. However, they are essentially a black box method since it is not easy to mathematically formulate the functions that are learned within…

Computer Vision and Pattern Recognition · Computer Science 2018-03-02 Gaurav Goswami , Nalini Ratha , Akshay Agarwal , Richa Singh , Mayank Vatsa

Deep Learning in Image Registration (DLIR) methods have been tremendously successful in image registration due to their speed and ability to incorporate weak label supervision at training time. However, existing DLIR methods forego many of…

Computer Vision and Pattern Recognition · Computer Science 2025-05-06 Rohit Jena , Pratik Chaudhari , James C. Gee

Different from face verification, face identification is much more demanding. To reach comparable performance, an identifier needs to be roughly N times better than a verifier. To expect a breakthrough in face identification, we need a…

Computer Vision and Pattern Recognition · Computer Science 2015-06-16 Yang Zhong , Haibo Li

This paper presents face recognition using maximum a posteriori (MAP) discriminant on YCbCr color space. The YCbCr color space is considered in order to cover the skin information of face image on the recognition process. The proposed…

Computer Vision and Pattern Recognition · Computer Science 2018-07-09 I Gede Pasek Suta Wijaya

The present research scholars are having keen interest in doing their research activities in the area of Data mining all over the world. Especially, [13]Mining Image data is the one of the essential features in this present scenario since…

Computer Vision and Pattern Recognition · Computer Science 2010-12-02 A. Kannan , V. Mohan , N. Anbazhagan

Recent text-to-image diffusion models have demonstrated remarkable generation of realistic facial images conditioned on textual prompts and human identities, enabling creating personalized facial imagery. However, existing prompt-based…

Computer Vision and Pattern Recognition · Computer Science 2025-12-30 Han-Wei Kung , Tuomas Varanka , Nicu Sebe

Portrait customization (PC) has recently garnered significant attention due to its potential applications. However, existing PC methods lack precise identity (ID) preservation and face control. To address these tissues, we propose Diff-PC,…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Yifang Xu , Benxiang Zhai , Chenyu Zhang , Ming Li , Yang Li , Sidan Du

Visual place recognition is a critical task in computer vision, especially for localization and navigation systems. Existing methods often rely on contrastive learning: image descriptors are trained to have small distance for similar images…

Computer Vision and Pattern Recognition · Computer Science 2024-01-30 María Leyva-Vallina , Nicola Strisciuglio , Nicolai Petkov

Face Recognition is a common problem in Machine Learning. This technology has already been widely used in our lives. For example, Facebook can automatically tag people's faces in images, and also some mobile devices use face recognition to…

Computer Vision and Pattern Recognition · Computer Science 2017-05-09 Fares Jalled

Zeroth-order optimization has emerged as a promising approach for fine-tuning large language models under differential privacy (DP) and memory constraints. While privacy amplification by iteration (PABI) provides convergent DP bounds for…

Machine Learning · Computer Science 2026-05-15 Eli Chien , Wei-Ning Chen , Pan Li