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While the performance of face recognition systems has improved significantly in the last decade, they are proved to be highly vulnerable to presentation attacks (spoofing). Most of the research in the field of face presentation attack…

Computer Vision and Pattern Recognition · Computer Science 2019-07-10 Olegs Nikisins , Anjith George , Sebastien Marcel

Recently, arbitrary-scale point cloud upsampling mechanism became increasingly popular due to its efficiency and convenience for practical applications. To achieve this, most previous approaches formulate it as a problem of surface…

Computer Vision and Pattern Recognition · Computer Science 2024-03-11 Hang Du , Xuejun Yan , Jingjing Wang , Di Xie , Shiliang Pu

3D to 2D retinal vessel segmentation is a challenging problem in Optical Coherence Tomography Angiography (OCTA) images. Accurate retinal vessel segmentation is important for the diagnosis and prevention of ophthalmic diseases. However,…

Image and Video Processing · Electrical Eng. & Systems 2021-12-17 Zhuojie Wu , Zijian Wang , Wenxuan Zou , Fan Ji , Hao Dang , Wanting Zhou , Muyi Sun

3D face recognition has shown its potential in many application scenarios. Among numerous 3D face recognition methods, deep-learning-based methods have developed vigorously in recent years. In this paper, an end-to-end deep learning network…

Computer Vision and Pattern Recognition · Computer Science 2021-04-01 Yi Yu , Feipeng Da , Ziyu Zhang

In light of the rising demand for biometric-authentication systems, preventing face spoofing attacks is a critical issue for the safe deployment of face recognition systems. Here, we propose an efficient face presentation attack detection…

Computer Vision and Pattern Recognition · Computer Science 2020-12-17 Akinori F. Ebihara , Kazuyuki Sakurai , Hitoshi Imaoka

Voice-based human-machine interfaces with an automatic speaker verification (ASV) component are commonly used in the market. However, the threat from presentation attacks is also growing since attackers can use recent speech synthesis…

Audio and Speech Processing · Electrical Eng. & Systems 2022-01-11 Xin Wang , Junichi Yamagishi

Face presentation attack detection (fPAD) plays a critical role in the modern face recognition pipeline. The generalization ability of face presentation attack detection models to unseen attacks has become a key issue for real-world…

Computer Vision and Pattern Recognition · Computer Science 2021-10-26 Rui Shao , Bochao Zhang , Pong C. Yuen , Vishal M. Patel

Wearing a mask has proven to be one of the most effective ways to prevent the transmission of SARS-CoV-2 coronavirus. However, wearing a mask poses challenges for different face recognition tasks and raises concerns about the performance of…

Computer Vision and Pattern Recognition · Computer Science 2021-11-09 Meiling Fang , Fadi Boutros , Arjan Kuijper , Naser Damer

3D hand shape and pose estimation from a single depth map is a new and challenging computer vision problem with many applications. The state-of-the-art methods directly regress 3D hand meshes from 2D depth images via 2D convolutional neural…

Computer Vision and Pattern Recognition · Computer Science 2020-04-06 Jameel Malik , Ibrahim Abdelaziz , Ahmed Elhayek , Soshi Shimada , Sk Aziz Ali , Vladislav Golyanik , Christian Theobalt , Didier Stricker

Face aging, which aims at aesthetically rendering a given face to predict its future appearance, has received significant research attention in recent years. Although great progress has been achieved with the success of Generative…

Computer Vision and Pattern Recognition · Computer Science 2019-11-18 Yunfan Liu , Qi Li , Zhenan Sun , Tieniu Tan

Many recent works on 3D object detection have focused on designing neural network architectures that can consume point cloud data. While these approaches demonstrate encouraging performance, they are typically based on a single modality and…

Computer Vision and Pattern Recognition · Computer Science 2019-04-04 Vishwanath A. Sindagi , Yin Zhou , Oncel Tuzel

The recent advancements in point cloud learning have enabled intelligent vehicles and robots to comprehend 3D environments better. However, processing large-scale 3D scenes remains a challenging problem, such that efficient downsampling…

Computer Vision and Pattern Recognition · Computer Science 2024-08-06 Hongcheng Yang , Dingkang Liang , Dingyuan Zhang , Zhe Liu , Zhikang Zou , Xingyu Jiang , Yingying Zhu

The low-cost, user-friendly, and convenient nature of Automatic Fingerprint Recognition Systems (AFRS) makes them suitable for a wide range of applications. This spreading use of AFRS also makes them vulnerable to various security threats.…

Computer Vision and Pattern Recognition · Computer Science 2023-06-07 Anuj Rai , Ashutosh Anshul , Ashwini Jha , Prayag Jain , Ramprakash Sharma , Somnath Dey

Knowledge of 3D properties of objects is a necessity in order to build effective computer vision systems. However, lack of large scale 3D datasets can be a major constraint for data-driven approaches in learning such properties. We consider…

Computer Vision and Pattern Recognition · Computer Science 2018-11-29 Navaneet K L , Priyanka Mandikal , Mayank Agarwal , R. Venkatesh Babu

3D object detection from point clouds plays a critical role in autonomous driving. Currently, the primary methods for point cloud processing are voxel-based and pillar-based approaches. Voxel-based methods offer high accuracy through…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Liu Qifeng , Zhao Dawei , Dong Yabo , Xiao Liang , Wang Juan , Min Chen , Li Fuyang , Jiang Weizhong , Lu Dongming , Nie Yiming

Efficiently and accurately detecting people from 3D point cloud data is of great importance in many robotic and autonomous driving applications. This fundamental perception task is still very challenging due to (i) significant deformations…

Computer Vision and Pattern Recognition · Computer Science 2022-11-18 Duy-Tho Le , Hengcan Shi , Hamid Rezatofighi , Jianfei Cai

In this work, we address the problem of 3D object detection from point cloud data in real time. For autonomous vehicles to work, it is very important for the perception component to detect the real world objects with both high accuracy and…

Computer Vision and Pattern Recognition · Computer Science 2021-08-12 Abhinav Sagar

Face recognition systems are widely deployed for biometric authentication. Despite this, it is well-known that, without any safeguards, face recognition systems are highly vulnerable to presentation attacks. In response to this security…

Computer Vision and Pattern Recognition · Computer Science 2023-08-29 M. Ibsen , C. Rathgeb , F. Brechtel , R. Klepp , K. Pöppelmann , A. George , S. Marcel , C. Busch

The integration of multimodal models into Presentation Attack Detection (PAD) for ID Documents represents a significant advancement in biometric security. Traditional PAD systems rely solely on visual features, which often fail to detect…

Computer Vision and Pattern Recognition · Computer Science 2026-04-01 Marina Villanueva , Juan M. Espin , Juan E. Tapia

Pose-invariant face recognition refers to the problem of identifying or verifying a person by analyzing face images captured from different poses. This problem is challenging due to the large variation of pose, illumination and facial…

Computer Vision and Pattern Recognition · Computer Science 2020-11-11 In Seop Na , Chung Tran , Dung Nguyen , Sang Dinh