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Patch-based sparse representation modeling has shown great potential in image compressive sensing (CS) reconstruction. However, this model usually suffers from some limits, such as dictionary learning with great computational complexity,…

Computer Vision and Pattern Recognition · Computer Science 2017-08-18 Zhiyuan Zha , Xinggan Zhang , Qiong Wang , Lan Tang , Xin Liu

Reconstructing category-specific objects using Neural Radiance Field (NeRF) from a single image is a promising yet challenging task. Existing approaches predominantly rely on projection-based feature retrieval to associate 3D points in the…

Computer Vision and Pattern Recognition · Computer Science 2025-02-18 Kun Wang , Zhiqiang Yan , Zhenyu Zhang , Xiang Li , Jun Li , Jian Yang

This paper makes a focused contribution to supervised aspect extraction. It shows that if the system has performed aspect extraction from many past domains and retained their results as knowledge, Conditional Random Fields (CRF) can…

Computation and Language · Computer Science 2017-05-02 Lei Shu , Hu Xu , Bing Liu

A key recent advance in face recognition models a test face image as a sparse linear combination of a set of training face images. The resulting sparse representations have been shown to possess robustness against a variety of distortions…

Computer Vision and Pattern Recognition · Computer Science 2011-11-09 Yi Chen , Umamahesh Srinivas , Thong T. Do , Vishal Monga , Trac D. Tran

Over the last decades, hand-crafted feature extractors have been used to encode image visual properties into feature vectors. Recently, data-driven feature learning approaches have been successfully explored as alternatives for producing…

Computer Vision and Pattern Recognition · Computer Science 2020-11-25 Érico M. Pereira , Ricardo da S. Torres , Jefersson A. dos Santos

This paper addresses the problem of holistic road scene understanding based on the integration of visual and range data. To achieve the grand goal, we propose an approach that jointly tackles object-level image segmentation and semantic…

Computer Vision and Pattern Recognition · Computer Science 2014-07-01 Wenqi Huang , Xiaojin Gong

Image classification is an essential task in computer vision, which aims to categorise a set of images into different groups based on some visual criteria. Existing methods, such as convolutional neural networks, have been successfully…

Neural and Evolutionary Computing · Computer Science 2019-10-01 Benjamin Patrick Evans , Harith Al-Sahaf , Bing Xue , Mengjie Zhang

Existing deep learning based facial landmark detection methods have achieved excellent performance. These methods, however, do not explicitly embed the structural dependencies among landmark points. They hence cannot preserve the geometric…

Computer Vision and Pattern Recognition · Computer Science 2022-06-29 Lisha Chen , Hui Su , Qiang Ji

We aim to improve the Inverted Neural Radiance Fields (iNeRF) algorithm which defines the image pose estimation problem as a NeRF based iterative linear optimization. NeRFs are novel neural space representation models that can synthesize…

Computer Vision and Pattern Recognition · Computer Science 2023-10-06 Ágoston István Csehi , Csaba Máté Józsa

Various multi-modal imaging sensors are currently involved at different steps of an interventional therapeutic work-flow. Cone beam computed tomography (CBCT), computed tomography (CT) or Magnetic Resonance (MR) images thereby provides…

Image and Video Processing · Electrical Eng. & Systems 2020-11-25 Luc Lafitte , Rémi Giraud , Cornel Zachiu , Mario Ries , Olivier Sutter , Antoine Petit , Olivier Seror , Clair Poignard , Baudouin Denis de Senneville

Instance retrieval requires one to search for images that contain a particular object within a large corpus. Recent studies show that using image features generated by pooling convolutional layer feature maps (CFMs) of a pretrained…

Computer Vision and Pattern Recognition · Computer Science 2016-06-23 Jiewei Cao , Lingqiao Liu , Peng Wang , Zi Huang , Chunhua Shen , Heng Tao Shen

Feature point detection and description is the backbone for various computer vision applications, such as Structure-from-Motion, visual SLAM, and visual place recognition. While learning-based methods have surpassed traditional handcrafted…

Computer Vision and Pattern Recognition · Computer Science 2024-09-23 Ali Youssef , Francisco Vasconcelos

Effective image classification hinges on discerning relevant features from both foreground and background elements, with the foreground typically holding the critical information. While humans adeptly classify images with limited exposure,…

Computer Vision and Pattern Recognition · Computer Science 2024-05-08 Weihao Jiang , Haoyang Cui , Kun He

Graph neural networks (GNNs) have shown great success in learning from graph-based data. The key mechanism of current GNNs is message passing, where a node's feature is updated based on the information passing from its local neighbourhood.…

Machine Learning · Computer Science 2024-05-09 Yongze Wang , Haimin Zhang , Qiang Wu , Min Xu

In recent years, it has been found that screen content images (SCI) can be effectively compressed based on appropriate probability modelling and suitable entropy coding methods such as arithmetic coding. The key objective is determining the…

Image and Video Processing · Electrical Eng. & Systems 2023-05-11 Shabhrish Reddy Uddehal , Tilo Strutz , Hannah Och , André Kaup

Many deep learning architectures for semantic segmentation involve a Fully Convolutional Neural Network (FCN) followed by a Conditional Random Field (CRF) to carry out inference over an image. These models typically involve unary potentials…

Computer Vision and Pattern Recognition · Computer Science 2018-05-25 Cristina Mata , Guy Ben-Yosef , Boris Katz

We propose a novel discriminative model for sequence labeling called Bregman conditional random fields (BCRF). Contrary to standard linear-chain conditional random fields, BCRF allows fast parallelizable inference algorithms based on…

Machine Learning · Computer Science 2025-06-03 Caio Corro , Mathieu Lacroix , Joseph Le Roux

In recent years, image forensics has attracted more and more attention, and many forensic methods have been proposed for identifying image processing operations. Up to now, most existing methods are based on hand crafted features, and just…

Multimedia · Computer Science 2020-09-01 Bolin Chen , Haodong Li , Weiqi Luo

Random field and random cluster theory are used to describe certain mathematical results concerning the probability distribution of image pixel intensities characterized as generic $2D$ integer arrays. The size of the smallest bounded…

Image and Video Processing · Electrical Eng. & Systems 2023-04-27 Robert A. Murphy

In this paper, we present a robust method for scene recognition, which leverages Convolutional Neural Networks (CNNs) features and Sparse Coding setting by creating a new representation of indoor scenes. Although CNNs highly benefited the…

Computer Vision and Pattern Recognition · Computer Science 2017-08-28 Guilherme Nascimento , Camila Laranjeira , Vinicius Braz , Anisio Lacerda , Erickson R. Nascimento