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With the increased deployment of face recognition systems in our daily lives, face presentation attack detection (PAD) is attracting much attention and playing a key role in securing face recognition systems. Despite the great performance…

计算机视觉与模式识别 · 计算机科学 2021-11-03 Meiling Fang , Naser Damer , Florian Kirchbuchner , Arjan Kuijper

Intrinsic image decomposition, which is an essential task in computer vision, aims to infer the reflectance and shading of the scene. It is challenging since it needs to separate one image into two components. To tackle this, conventional…

计算机视觉与模式识别 · 计算机科学 2020-05-28 Yunfei Liu , Yu Li , Shaodi You , Feng Lu

Face animation is a challenging task. Existing model-based methods (utilizing 3DMMs or landmarks) often result in a model-like reconstruction effect, which doesn't effectively preserve identity. Conversely, model-free approaches face…

计算机视觉与模式识别 · 计算机科学 2025-01-30 Lei Zhu , Yuanqi Chen , Xiaohang Liu , Thomas H. Li , Ge Li

Deep learning has enabled realistic face manipulation (i.e., deepfake), which poses significant concerns over the integrity of the media in circulation. Most existing deep learning techniques for deepfake detection can achieve promising…

计算机视觉与模式识别 · 计算机科学 2022-12-26 Bosheng Yan , Chang-Tsun Li , Xuequan Lu

Decoding brain imaging data are gaining popularity, with applications in brain-computer interfaces and the study of neural representations. Decoding is typicallysubject-specific and does not generalise well over subjects, due to high…

机器学习 · 计算机科学 2024-01-22 Richard Csaky , Mats Van Es , Oiwi Parker Jones , Mark Woolrich

Recent advancements in text-to-image generative models have demonstrated a remarkable ability to capture a deep semantic understanding of images. In this work, we leverage this semantic knowledge to transfer the visual appearance between…

计算机视觉与模式识别 · 计算机科学 2023-11-07 Yuval Alaluf , Daniel Garibi , Or Patashnik , Hadar Averbuch-Elor , Daniel Cohen-Or

Anatomical segmentation is a fundamental task in medical image computing, generally tackled with fully convolutional neural networks which produce dense segmentation masks. These models are often trained with loss functions such as…

图像与视频处理 · 电气工程与系统科学 2022-11-28 Nicolás Gaggion , Lucas Mansilla , Candelaria Mosquera , Diego H. Milone , Enzo Ferrante

In this paper we examine the problem of inverse rendering of real face images. Existing methods decompose a face image into three components (albedo, normal, and illumination) by supervised training on synthetic face data. However, due to…

计算机视觉与模式识别 · 计算机科学 2020-03-27 Yuda Qiu , Zhangyang Xiong , Kai Han , Zhongyuan Wang , Zixiang Xiong , Xiaoguang Han

The success of supervised learning requires large-scale ground truth labels which are very expensive, time-consuming, or may need special skills to annotate. To address this issue, many self- or un-supervised methods are developed. Unlike…

计算机视觉与模式识别 · 计算机科学 2020-04-14 Longlong Jing , Yucheng Chen , Ling Zhang , Mingyi He , Yingli Tian

We explore a new idea for learning based shape reconstruction from a point cloud, based on the recently popularized implicit neural shape representations. We cast the problem as a few-shot learning of implicit neural signed distance…

计算机视觉与模式识别 · 计算机科学 2022-07-12 Amine Ouasfi , Adnane Boukhayma

Hyperspectral imaging has the potential to improve intraoperative decision making if tissue characterisation is performed in real-time and with high-resolution. Hyperspectral snapshot mosaic sensors offer a promising approach due to their…

图像与视频处理 · 电气工程与系统科学 2023-03-27 Peichao Li , Muhammad Asad , Conor Horgan , Oscar MacCormac , Jonathan Shapey , Tom Vercauteren

Visual brain decoding aims to decode visual information from human brain activities. Despite the great progress, one critical limitation of current brain decoding research lies in the lack of generalization capability to unseen subjects.…

计算机视觉与模式识别 · 计算机科学 2024-10-22 Xiangtao Kong , Kexin Huang , Ping Li , Lei Zhang

In this work, we propose a cross-view learning approach, in which images captured from a ground-level view are used as weakly supervised annotations for interpreting overhead imagery. The outcome is a convolutional neural network for…

计算机视觉与模式识别 · 计算机科学 2018-08-06 Connor Greenwell , Scott Workman , Nathan Jacobs

This work introduces a Transformer-based image compression system. It has the flexibility to switch between the standard image reconstruction and the denoising reconstruction from a single compressed bitstream. Instead of training separate…

图像与视频处理 · 电气工程与系统科学 2024-02-21 Yi-Hsin Chen , Kuan-Wei Ho , Shiau-Rung Tsai , Guan-Hsun Lin , Alessandro Gnutti , Wen-Hsiao Peng , Riccardo Leonardi

With a proliferation of generic domain-adaptation approaches, we report a simple yet effective technique for learning difficult per-pixel 2.5D and 3D regression representations of articulated people. We obtained strong sim-to-real domain…

计算机视觉与模式识别 · 计算机科学 2020-07-31 Tyler Zhu , Per Karlsson , Christoph Bregler

In domains where computational resources and labeled data are limited, such as in robotics, deep networks with millions of weights might not be the optimal solution. In this paper, we introduce a connectivity scheme for pyramidal…

计算机视觉与模式识别 · 计算机科学 2021-03-24 Henrique Siqueira , Pablo Barros , Sven Magg , Cornelius Weber , Stefan Wermter

In recent years, U-Net and its variants have been widely used in pathology image segmentation tasks. One of the key designs of U-Net is the use of skip connections between the encoder and decoder, which helps to recover detailed information…

图像与视频处理 · 电气工程与系统科学 2023-10-18 Zongyi Li , Hongbing Lyu , Jun Wang

In this work, we present a new method for 3D face reconstruction from sparse-view RGB images. Unlike previous methods which are built upon 3D morphable models (3DMMs) with limited details, we leverage an implicit representation to encode…

计算机视觉与模式识别 · 计算机科学 2022-10-04 Moran Li , Haibin Huang , Yi Zheng , Mengtian Li , Nong Sang , Chongyang Ma

Modern deep neural networks exhibit strong generalization even in highly overparameterized regimes. Significant progress has been made to understand this phenomenon in the context of supervised learning, but for unsupervised tasks such as…

机器学习 · 统计学 2025-06-02 Jonghyun Ham , Maximilian Fleissner , Debarghya Ghoshdastidar

This paper proposes a fast and accurate surface normal estimation method which can be directly used on depth maps (organized point clouds). The surface normal estimation process is formulated as a closed-form expression. In order to reduce…

计算机视觉与模式识别 · 计算机科学 2022-09-20 Saed Moradi , Alireza Memarmoghadam , Denis Laurendeau