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This paper presents an novel illumination-invariant feature representation approach used to eliminate the varying illumination affection in undersampled face recognition. Firstly, a new illumination level classification technique based on…

Computer Vision and Pattern Recognition · Computer Science 2020-04-08 Yang Zhang , Changhui Hu , Xiaobo Lu

Few-shot adaptation of vision-language models (VLMs) like CLIP typically relies on learning textual prompts matched to global image embeddings. Recent works extend this paradigm by incorporating local image-text alignment to capture…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Deniz Kizaroğlu , Ülku Tuncer Küçüktas , Emre Çakmakyurdu , Alptekin Temizel

Supervised contour detection methods usually require many labeled training images to obtain satisfactory performance. However, a large set of annotated data might be unavailable or extremely labor intensive. In this paper, we investigate…

Computer Vision and Pattern Recognition · Computer Science 2016-05-18 Zizhao Zhang , Fuyong Xing , Xiaoshuang Shi , Lin Yang

We address the problem of vehicle self-localization from multi-modal sensor information and a reference map. The map is generated off-line by extracting landmarks from the vehicle's field of view, while the measurements are collected…

Robotics · Computer Science 2019-07-22 Nico Engel , Stefan Hoermann , Markus Horn , Vasileios Belagiannis , Klaus Dietmayer

Concatenation of the deep network representations extracted from different facial patches helps to improve face recognition performance. However, the concatenated facial template increases in size and contains redundant information.…

Computer Vision and Pattern Recognition · Computer Science 2019-04-16 Yuhang Wu , Ioannis A. Kakadiaris

We introduce a novel principle for self-supervised feature learning based on the discrimination of specific transformations of an image. We argue that the generalization capability of learned features depends on what image neighborhood size…

Computer Vision and Pattern Recognition · Computer Science 2020-04-07 Simon Jenni , Hailin Jin , Paolo Favaro

High-quality imaging in photoacoustic computed tomography (PACT) usually requires a high-channel count system for dense spatial sampling around the object to avoid aliasing-related artefacts. To reduce system complexity, various image…

Image and Video Processing · Electrical Eng. & Systems 2024-09-24 Bowei Yao , Shilong Cui , Haizhao Dai , Qing Wu , Youshen Xiao , Fei Gao , Jingyi Yu , Yuyao Zhang , Xiran Cai

Faces are highly deformable objects which may easily change their appearance over time. Not all face areas are subject to the same variability. Therefore decoupling the information from independent areas of the face is of paramount…

Computer Vision and Pattern Recognition · Computer Science 2016-11-18 Dakshina Ranjan Kisku , Massimo Tistarelli , Jamuna Kanta Sing , Phalguni Gupta

Masked time series modeling has recently gained much attention as a self-supervised representation learning strategy for time series. Inspired by masked image modeling in computer vision, recent works first patchify and partially mask out…

Machine Learning · Computer Science 2024-05-03 Seunghan Lee , Taeyoung Park , Kibok Lee

Recent learning-based super-resolution (SR) methods often focus on dictionary learning or network training. In this paper, we discuss in detail a new SR method based on local patch encoding (LPE) instead of traditional dictionary learning.…

Computer Vision and Pattern Recognition · Computer Science 2018-07-05 Yang Zhao , Ronggang Wang , Wei Jia , Jianchao Yang , Wenmin Wang , Wen Gao

We present a novel method for efficiently producing semi-dense matches across images. Previous detector-free matcher LoFTR has shown remarkable matching capability in handling large-viewpoint change and texture-poor scenarios but suffers…

Computer Vision and Pattern Recognition · Computer Science 2024-03-13 Yifan Wang , Xingyi He , Sida Peng , Dongli Tan , Xiaowei Zhou

Deepfake facial manipulation has garnered significant public attention due to its impacts on enhancing human experiences and posing privacy threats. Despite numerous passive algorithms that have been attempted to thwart malicious Deepfake…

Computer Vision and Pattern Recognition · Computer Science 2024-11-27 Tianyi Wang , Mengxiao Huang , Harry Cheng , Xiao Zhang , Zhiqi Shen

Transformer has been widely used for self-supervised pre-training in Natural Language Processing (NLP) and achieved great success. However, it has not been fully explored in visual self-supervised learning. Meanwhile, previous methods only…

Computer Vision and Pattern Recognition · Computer Science 2021-10-26 Zhaowen Li , Zhiyang Chen , Fan Yang , Wei Li , Yousong Zhu , Chaoyang Zhao , Rui Deng , Liwei Wu , Rui Zhao , Ming Tang , Jinqiao Wang

Latent Diffusion Models (LDMs) are generally trained at fixed resolutions, limiting their capability when scaling up to high-resolution images. While training-based approaches address this limitation by training on high-resolution datasets,…

Computer Vision and Pattern Recognition · Computer Science 2025-07-30 Sangmin Han , Jinho Jeong , Jinwoo Kim , Seon Joo Kim

We present Predictive Sparse Manifold Transform (PSMT), a minimalistic, interpretable and biologically plausible framework for learning and predicting natural dynamics. PSMT incorporates two layers where the first sparse coding layer…

Machine Learning · Statistics 2023-08-29 Yujia Xie , Xinhui Li , Vince D. Calhoun

We propose a novel end-to-end deep architecture for face landmark detection, based on a deep convolutional and deconvolutional network followed by carefully designed recurrent network structures. The pipeline of this architecture consists…

Computer Vision and Pattern Recognition · Computer Science 2016-11-01 Hanjiang Lai , Shengtao Xiao , Yan Pan , Zhen Cui , Jiashi Feng , Chunyan Xu , Jian Yin , Shuicheng Yan

The goal of point set registration is to find point-by-point correspondences between point sets, each of which characterizes the shape of an object. Because local preservation of object geometry is assumed, prevalent algorithms in the area…

Artificial Intelligence · Computer Science 2018-07-27 Osamu Hirose

Feature learning on point clouds has shown great promise, with the introduction of effective and generalizable deep learning frameworks such as pointnet++. Thus far, however, point features have been abstracted in an independent and…

Computer Vision and Pattern Recognition · Computer Science 2018-03-16 Chu Wang , Babak Samari , Kaleem Siddiqi

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…

Computer Vision and Pattern Recognition · Computer Science 2022-10-04 Moran Li , Haibin Huang , Yi Zheng , Mengtian Li , Nong Sang , Chongyang Ma

Cascaded Regression (CR) based methods have been proposed to solve facial landmarks detection problem, which learn a series of descent directions by multiple cascaded regressors separately trained in coarse and fine stages. They outperform…

Computer Vision and Pattern Recognition · Computer Science 2018-03-20 Tao Hu , Honggang Qi , Jizheng Xu , Qingming Huang