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The goal of full-reference image quality assessment (FR-IQA) is to predict the quality of an image as perceived by human observers with using its pristine, reference counterpart. In this study, we explore a novel, combined approach which…

Computer Vision and Pattern Recognition · Computer Science 2020-12-04 Domonkos Varga

Neuroimaging data analysis often involves \emph{a-priori} selection of data features to study the underlying neural activity. Since this could lead to sub-optimal feature selection and thereby prevent the detection of subtle patterns in…

Neurons and Cognition · Quantitative Biology 2018-07-03 Arna Ghosh , Fabien dal Maso , Marc Roig , Georgios D Mitsis , Marie-Hélène Boudrias

Image retrieval refers to finding relevant images from an image database for a query, which is considered difficult for the gap between low-level representation of images and high-level representation of queries. Recently further developed…

Computer Vision and Pattern Recognition · Computer Science 2013-12-24 Yalong Bai , Kuiyuan Yang , Wei Yu , Wei-Ying Ma , Tiejun Zhao

Image descriptors based on activations of Convolutional Neural Networks (CNNs) have become dominant in image retrieval due to their discriminative power, compactness of representation, and search efficiency. Training of CNNs, either from…

Computer Vision and Pattern Recognition · Computer Science 2018-07-12 Filip Radenović , Giorgos Tolias , Ondřej Chum

When a deep neural network is trained on data with only image-level labeling, the regions activated in each image tend to identify only a small region of the target object. We propose a method of using videos automatically harvested from…

Computer Vision and Pattern Recognition · Computer Science 2019-08-14 Jungbeom Lee , Eunji Kim , Sungmin Lee , Jangho Lee , Sungroh Yoon

A novel deep neural network training paradigm that exploits the conjoint information in multiple heterogeneous sources is proposed. Specifically, in a RGB-D based action recognition task, it cooperatively trains a single convolutional…

Computer Vision and Pattern Recognition · Computer Science 2018-01-04 Pichao Wang , Wanqing Li , Jun Wan , Philip Ogunbona , Xinwang Liu

Variational methods are widely applied to ill-posed inverse problems for they have the ability to embed prior knowledge about the solution. However, the level of performance of these methods significantly depends on a set of parameters,…

Optimization and Control · Mathematics 2020-01-23 Carla Bertocchi , Emilie Chouzenoux , Marie-Caroline Corbineau , Jean-Christophe Pesquet , Marco Prato

Low level image restoration is an integral component of modern artificial intelligence (AI) driven camera pipelines. Most of these frameworks are based on deep neural networks which present a massive computational overhead on resource…

Computer Vision and Pattern Recognition · Computer Science 2020-07-14 Avisek Lahiri , Sourav Bairagya , Sutanu Bera , Siddhant Haldar , Prabir Kumar Biswas

Convolutional Neural Networks have demonstrated superior performance on single image depth estimation in recent years. These works usually use stacked spatial pooling or strided convolution to get high-level information which are common…

Computer Vision and Pattern Recognition · Computer Science 2018-09-05 Zhixiang Hao , Yu Li , Shaodi You , Feng Lu

Deep neural networks (DNNs) for supervised learning can be viewed as a pipeline of the feature extractor (i.e., last hidden layer) and a linear classifier (i.e., output layer) that are trained jointly with stochastic gradient descent (SGD)…

Machine Learning · Computer Science 2022-11-28 Xin Li , Xiangrui Li , Deng Pan , Yao Qiang , Dongxiao Zhu

In recent years, hashing methods have been popular in the large-scale media search for low storage and strong representation capabilities. To describe objects with similar overall appearance but subtle differences, more and more studies…

Information Retrieval · Computer Science 2024-01-11 Xin Lu , Shikun Chen , Yichao Cao , Xin Zhou , Xiaobo Lu

In this paper, we present a local geometric analysis to interpret how deep feedforward neural networks extract low-dimensional features from high-dimensional data. Our study shows that, in a local geometric region, the optimal weight in one…

Machine Learning · Computer Science 2022-02-11 Md Kamran Chowdhury Shisher , Tasmeen Zaman Ornee , Yin Sun

In this paper we propose an ensemble of local and deep features for object classification. We also compare and contrast effectiveness of feature representation capability of various layers of convolutional neural network. We demonstrate…

Computer Vision and Pattern Recognition · Computer Science 2017-12-14 Siddharth Srivastava , Prerana Mukherjee , Brejesh Lall , Kamlesh Jaiswal

Deep Convolutional features extracted from a comprehensive labeled dataset, contain substantial representations which could be effectively used in a new domain. Despite the fact that generic features achieved good results in many visual…

Computer Vision and Pattern Recognition · Computer Science 2018-05-06 Qun Liu , Supratik Mukhopadhyay

We test this premise and explore representation spaces from a single deep convolutional network and their visualization to argue for a novel unified feature extraction framework. The objective is to utilize and re-purpose trained feature…

Computer Vision and Pattern Recognition · Computer Science 2017-07-19 Dalton Lunga , Dilip Patlolla , Lexie Yang , Jeanette Weaver , Budhendra Bhadhuri

We propose a method for integration of features extracted using deep representations of Convolutional Neural Networks (CNNs) each of which is learned using a different image dataset of objects and materials for material recognition. Given a…

Computer Vision and Pattern Recognition · Computer Science 2016-04-22 Yan Zhang , Mete Ozay , Xing Liu , Takayuki Okatani

This paper addresses the problem of very large-scale image retrieval, focusing on improving its accuracy and robustness. We target enhanced robustness of search to factors such as variations in illumination, object appearance and scale,…

Computer Vision and Pattern Recognition · Computer Science 2019-06-18 Syed Sameed Husain , Miroslaw Bober

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

This study addresses the application of deep learning techniques in joint sound signal classification and localization networks. Current state-of-the-art sound source localization deep learning networks lack feature aggregation within their…

Sound · Computer Science 2024-01-30 Brendan Healy , Patrick McNamee , Zahra Nili Ahmadabadi

Current approaches for explaining machine learning models fall into two distinct classes: antecedent event influence and value attribution. The former leverages training instances to describe how much influence a training point exerts on a…

Machine Learning · Computer Science 2019-01-30 Umang Bhatt , Pradeep Ravikumar , Jose M. F. Moura