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Camera model identification (CMI) has gained significant importance in image forensics as digitally altered images are becoming increasingly commonplace. In this paper, a novel convolutional neural network (CNN) architecture is proposed for…

Image and Video Processing · Electrical Eng. & Systems 2020-06-30 Abdul Muntakim Rafi , Thamidul Islam Tonmoy , Uday Kamal , Q. M. Jonathan Wu , Md. Kamrul Hasan

We present compositional nearest neighbors (CompNN), a simple approach to visually interpreting distributed representations learned by a convolutional neural network (CNN) for pixel-level tasks (e.g., image synthesis and segmentation). It…

Computer Vision and Pattern Recognition · Computer Science 2018-09-05 Victor Fragoso , Chunhui Liu , Aayush Bansal , Deva Ramanan

This paper addresses the problem of viewpoint estimation of an object in a given image. It presents five key insights that should be taken into consideration when designing a CNN that solves the problem. Based on these insights, the paper…

Computer Vision and Pattern Recognition · Computer Science 2018-07-04 Gilad Divon , Ayellet Tal

In the problems of image retrieval and annotation, complete textual tag lists of images play critical roles. However, in real-world applications, the image tags are usually incomplete, thus it is important to learn the complete tags for…

Computer Vision and Pattern Recognition · Computer Science 2017-06-06 Yanyan Geng , Guohui Zhang , Weizhi Li , Yi Gu , Ru-Ze Liang , Gaoyuan Liang , Jingbin Wang , Yanbin Wu , Nitin Patil , Jing-Yan Wang

The convolutional neural network (CNN) learns the same object in different positions in images, which can improve the recognition accuracy of the model. An implication of this is that CNN may know where the object is. The usefulness of the…

Computer Vision and Pattern Recognition · Computer Science 2023-02-20 Nan Yang , Laicheng Zhong , Fan Huang , Dong Yuan , Wei Bao

Convolutional Neural Networks (CNNs) have achieved superior performance on object image retrieval, while Bag-of-Words (BoW) models with handcrafted local features still dominate the retrieval of overlapping images in 3D reconstruction. In…

Computer Vision and Pattern Recognition · Computer Science 2018-12-11 Tianwei Shen , Zixin Luo , Lei Zhou , Runze Zhang , Siyu Zhu , Tian Fang , Long Quan

Object viewpoint estimation from 2D images is an essential task in computer vision. However, two issues hinder its progress: scarcity of training data with viewpoint annotations, and a lack of powerful features. Inspired by the growing…

Computer Vision and Pattern Recognition · Computer Science 2015-05-22 Hao Su , Charles R. Qi , Yangyan Li , Leonidas Guibas

Image forgery detection is the task of detecting and localizing forged parts in tampered images. Previous works mostly focus on high resolution images using traces of resampling features, demosaicing features or sharpness of edges. However,…

Computer Vision and Pattern Recognition · Computer Science 2018-02-06 Zhongping Zhang , Yixuan Zhang , Zheng Zhou , Jiebo Luo

Face recognition is greatly improved by deep convolutional neural networks (CNNs). Recently, these face recognition models have been used for identity authentication in security sensitive applications. However, deep CNNs are vulnerable to…

Computer Vision and Pattern Recognition · Computer Science 2021-08-31 Zihao Xiao , Xianfeng Gao , Chilin Fu , Yinpeng Dong , Wei Gao , Xiaolu Zhang , Jun Zhou , Jun Zhu

We adopt Convolutional Neural Networks (CNNs) to be our parametric model to learn discriminative features and classifiers for local patch classification. Based on the occurrence frequency distribution of classes, an ensemble of CNNs…

Computer Vision and Pattern Recognition · Computer Science 2016-04-21 Bing Shuai , Zhen Zuo , Gang Wang , Bing Wang

This paper addresses the challenge of dense pixel correspondence estimation between two images. This problem is closely related to optical flow estimation task where ConvNets (CNNs) have recently achieved significant progress. While optical…

Computer Vision and Pattern Recognition · Computer Science 2018-10-23 Iaroslav Melekhov , Aleksei Tiulpin , Torsten Sattler , Marc Pollefeys , Esa Rahtu , Juho Kannala

Recently, outstanding identification rates in image classification tasks were achieved by convolutional neural networks (CNNs). to use such skills, selective CNNs trained on a dataset of well-known images of metal surface defects captured…

Computer Vision and Pattern Recognition · Computer Science 2024-06-24 Nadeem Jabbar Chaudhry , M. Bilal Khan , M. Javaid Iqbal , Siddiqui Muhammad Yasir

Distinguishing manipulated from real images is becoming increasingly difficult as new sophisticated image forgery approaches come out by the day. Naive classification approaches based on Convolutional Neural Networks (CNNs) show excellent…

Computer Vision and Pattern Recognition · Computer Science 2019-11-28 Davide Cozzolino , Justus Thies , Andreas Rössler , Christian Riess , Matthias Nießner , Luisa Verdoliva

Conventional 2D Convolutional Neural Networks (CNN) extract features from an input image by applying linear filters. These filters compute the spatial coherence by weighting the photometric information on a fixed neighborhood without taking…

Computer Vision and Pattern Recognition · Computer Science 2020-09-24 Zongwei Wu , Guillaume Allibert , Christophe Stolz , Cedric Demonceaux

This paper introduces an innovative keypoint detection technique based on Convolutional Neural Networks (CNNs) to enhance the performance of existing Deep Visual Servoing (DVS) models. To validate the convergence of the Image-Based Visual…

Robotics · Computer Science 2024-09-23 Niloufar Amiri , Guanghui Wang , Farrokh Janabi-Sharifi

One of the challenging problems in digital image forensics is the capability to identify images that are captured by the same camera device. This knowledge can help forensic experts in gathering intelligence about suspects by analyzing…

Image and Video Processing · Electrical Eng. & Systems 2020-04-27 Guru Swaroop Bennabhaktula , Enrique Alegre , Dimka Karastoyanova , George Azzopardi

We propose a novel image based localization system using graph neural networks (GNN). The pretrained ResNet50 convolutional neural network (CNN) architecture is used to extract the important features for each image. Following, the extracted…

Computer Vision and Pattern Recognition · Computer Science 2021-03-18 Ahmed Elmoogy , Xiaodai Dong , Tao Lu , Robert Westendorp , Kishore Reddy

Image classification has significantly improved using deep learning. This is mainly due to convolutional neural networks (CNNs) that are capable of learning rich feature extractors from large datasets. However, most deep learning…

Computer Vision and Pattern Recognition · Computer Science 2021-10-06 Xiaoyu Lin , Deblina Bhattacharjee , Majed El Helou , Sabine Süsstrunk

Convolutional Neural Networks (CNN) has been widely applied in the realm of computer vision. However, given the fact that CNN models are translation invariant, they are not aware of the coordinate information of each pixel. Thus the…

Computer Vision and Pattern Recognition · Computer Science 2020-03-25 Liliang Ren , Zhuonan Hao

We explore means to advance source camera identification based on sensor noise in a data-driven framework. Our focus is on improving the sensor pattern noise (SPN) extraction from a single image at test time. Where existing works suppress…

Computer Vision and Pattern Recognition · Computer Science 2020-02-10 Matthias Kirchner , Cameron Johnson
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