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30,402
Human activity recognition from mobile inertial sensors using recurrence plots
cs.CV
Inertial sensors are present in most mobile devices nowadays and such devices are used by people during most of their daily activities. In this paper, we present an approach for human activity recognition based on inertial sensors by employing recurrence plots (RP) and visual descriptors. The pipeline of the proposed a...
computer science
30,403
AI Oriented Large-Scale Video Management for Smart City: Technologies, Standards and Beyond
cs.CV
Deep learning has achieved substantial success in a series of tasks in computer vision. Intelligent video analysis, which can be broadly applied to video surveillance in various smart city applications, can also be driven by such powerful deep learning engines. To practically facilitate deep neural network models in th...
computer science
30,404
Zone-based Keyword Spotting in Bangla and Devanagari Documents
cs.CV
In this paper we present a word spotting system in text lines for offline Indic scripts such as Bangla (Bengali) and Devanagari. Recently, it was shown that zone-wise recognition method improves the word recognition performance than conventional full word recognition system in Indic scripts. Inspired with this idea we ...
computer science
30,405
4DFAB: A Large Scale 4D Facial Expression Database for Biometric Applications
cs.CV
The progress we are currently witnessing in many computer vision applications, including automatic face analysis, would not be made possible without tremendous efforts in collecting and annotating large scale visual databases. To this end, we propose 4DFAB, a new large scale database of dynamic high-resolution 3D faces...
computer science
30,406
Adversarial Attribute-Image Person Re-identification
cs.CV
While attributes have been widely used for person re-identification (Re-ID) that matches the same person images across disjoint camera views, they are used either as extra features or for performing multi-task learning to assist the image-image person matching task. However, how to find a set of person images according...
computer science
30,407
Fully Automatic Segmentation of Lumbar Vertebrae from CT Images using Cascaded 3D Fully Convolutional Networks
cs.CV
We present a method to address the challenging problem of segmentation of lumbar vertebrae from CT images acquired with varying fields of view. Our method is based on cascaded 3D Fully Convolutional Networks (FCNs) consisting of a localization FCN and a segmentation FCN. More specifically, in the first step we train a ...
computer science
30,408
Joint Embedding and Classification for SAR Target Recognition
cs.CV
Deep learning can be an effective and efficient means to automatically detect and classify targets in synthetic aperture radar (SAR) images, but it is critical for trained neural networks to be robust to variations that exist between training and test environments. The layers in a neural network can be understood as su...
computer science
30,409
O-CNN: Octree-based Convolutional Neural Networks for 3D Shape Analysis
cs.CV
We present O-CNN, an Octree-based Convolutional Neural Network (CNN) for 3D shape analysis. Built upon the octree representation of 3D shapes, our method takes the average normal vectors of a 3D model sampled in the finest leaf octants as input and performs 3D CNN operations on the octants occupied by the 3D shape surf...
computer science
30,410
Deep Learning for automatic sale receipt understanding
cs.CV
As a general rule, data analytics are now mandatory for companies. Scanned document analysis brings additional challenges introduced by paper damages and scanning quality.In an industrial context, this work focuses on the automatic understanding of sale receipts which enable access to essential and accurate consumption...
computer science
30,411
Empirically Analyzing the Effect of Dataset Biases on Deep Face Recognition Systems
cs.CV
It is unknown what kind of biases modern in the wild face datasets have because of their lack of annotation. A direct consequence of this is that total recognition rates alone only provide limited insight about the generalization ability of a Deep Convolutional Neural Networks (DCNNs). We propose to empirically study t...
computer science
30,412
Keypoint-based object tracking and localization using networks of low-power embedded smart cameras
cs.CV
Object tracking and localization is a complex task that typically requires processing power beyond the capabilities of low-power embedded cameras. This paper presents a new approach to real-time object tracking and localization using multi-view binary keypoints descriptor. The proposed approach offers a compromise betw...
computer science
30,413
Can CNNs Construct Highly Accurate Model Efficiently with Limited Training Samples?
cs.CV
It is well known that metamodel or surrogate modeling techniques have been widely applied in engineering problems due to their higher efficiency. However, with the increase of the linearity and dimensions, it is difficult for the present popular metamodeling techniques to construct reliable metamodel and apply to more ...
computer science
30,414
Automatic Spine Segmentation using Convolutional Neural Network via Redundant Generation of Class Labels for 3D Spine Modeling
cs.CV
There has been a significant increase from 2010 to 2016 in the number of people suffering from spine problems. The automatic image segmentation of the spine obtained from a computed tomography (CT) image is important for diagnosing spine conditions and for performing surgery with computer-assisted surgery systems. The ...
computer science
30,415
Color Face Recognition using High-Dimension Quaternion-based Adaptive Representation
cs.CV
Recently, quaternion collaborative representation-based classification (QCRC) and quaternion sparse representation-based classification (QSRC) have been proposed for color face recognition. They can obtain correlation information among different color channels. However, their performance is unstable in different condit...
computer science
30,416
Vision Recognition using Discriminant Sparse Optimization Learning
cs.CV
To better select the correct training sample and obtain the robust representation of the query sample, this paper proposes a discriminant-based sparse optimization learning model. This learning model integrates discriminant and sparsity together. Based on this model, we then propose a classifier called locality-based d...
computer science
30,417
Open Evaluation Tool for Layout Analysis of Document Images
cs.CV
This paper presents an open tool for standardizing the evaluation process of the layout analysis task of document images at pixel level. We introduce a new evaluation tool that is both available as a standalone Java application and as a RESTful web service. This evaluation tool is free and open-source in order to be a ...
computer science
30,418
Constrained Manifold Learning for Hyperspectral Imagery Visualization
cs.CV
Displaying the large number of bands in a hyper- spectral image (HSI) on a trichromatic monitor is important for HSI processing and analysis system. The visualized image shall convey as much information as possible from the original HSI and meanwhile facilitate image interpretation. However, most existing methods displ...
computer science
30,419
Recognizing Gender from Human Facial Regions using Genetic Algorithm
cs.CV
Recently, recognition of gender from facial images has gained a lot of importance. There exist a handful of research work that focus on feature extraction to obtain gender specific information from facial images. However, analyzing different facial regions and their fusion help in deciding the gender of a person from f...
computer science
30,420
Accelerating Convolutional Neural Networks for Continuous Mobile Vision via Cache Reuse
cs.CV
Convolutional Neural Network (CNN) is the state-of-the-art algorithm of many mobile vision fields. It is also applied in many vision tasks such as face detection and augmented reality on mobile devices. Though benefited from the high accuracy achieved via deep CNN models, nowadays commercial mobile devices are often sh...
computer science
30,421
IEOPF: An Active Contour Model for Image Segmentation with Inhomogeneities Estimated by Orthogonal Primary Functions
cs.CV
Image segmentation is still an open problem especially when intensities of the interested objects are overlapped due to the presence of intensity inhomogeneity (also known as bias field). To segment images with intensity inhomogeneities, a bias correction embedded level set model is proposed where Inhomogeneities are E...
computer science
30,422
Automated Pruning for Deep Neural Network Compression
cs.CV
In this work we present a method to improve the pruning step of the current state-of-the-art methodology to compress neural networks. The novelty of the proposed pruning technique is in its differentiability, which allows pruning to be performed during the backpropagation phase of the network training. This enables an ...
computer science
30,423
Convolutional Recurrent Neural Networks for Dynamic MR Image Reconstruction
cs.CV
Accelerating the data acquisition of dynamic magnetic resonance imaging (MRI) leads to a challenging ill-posed inverse problem, which has received great interest from both the signal processing and machine learning community over the last decades. The key ingredient to the problem is how to exploit the temporal correla...
computer science
30,424
Tech Report: A Fast Multiscale Spatial Regularization for Sparse Hyperspectral Unmixing
cs.CV
Sparse hyperspectral unmixing from large spectral libraries has been considered to circumvent limitations of endmember extraction algorithms in many applications. This strategy often leads to ill-posed inverse problems, which can benefit from spatial regularization strategies. While existing spatial regularization meth...
computer science
30,425
R-FCN-3000 at 30fps: Decoupling Detection and Classification
cs.CV
We present R-FCN-3000, a large-scale real-time object detector in which objectness detection and classification are decoupled. To obtain the detection score for an RoI, we multiply the objectness score with the fine-grained classification score. Our approach is a modification of the R-FCN architecture in which position...
computer science
30,426
Factoring Shape, Pose, and Layout from the 2D Image of a 3D Scene
cs.CV
The goal of this paper is to take a single 2D image of a scene and recover the 3D structure in terms of a small set of factors: a layout representing the enclosing surfaces as well as a set of objects represented in terms of shape and pose. We propose a convolutional neural network-based approach to predict this repres...
computer science
30,427
Structured Set Matching Networks for One-Shot Part Labeling
cs.CV
Diagrams often depict complex phenomena and serve as a good test bed for visual and textual reasoning. However, understanding diagrams using natural image understanding approaches requires large training datasets of diagrams, which are very hard to obtain. Instead, this can be addressed as a matching problem either bet...
computer science
30,428
Grounding Referring Expressions in Images by Variational Context
cs.CV
We focus on grounding (i.e., localizing or linking) referring expressions in images, e.g., "largest elephant standing behind baby elephant". This is a general yet challenging vision-language task since it does not only require the localization of objects, but also the multimodal comprehension of context --- visual attr...
computer science
30,429
Population-based Respiratory 4D Motion Atlas Construction and its Application for VR Simulations of Liver Punctures
cs.CV
Virtual reality (VR) training simulators of liver needle insertion in the hepatic area of breathing virtual patients currently need 4D data acquisitions as a prerequisite. Here, first a population-based breathing virtual patient 4D atlas can be built and second the requirement of a dose-relevant or expensive acquisitio...
computer science
30,430
Co-domain Embedding using Deep Quadruplet Networks for Unseen Traffic Sign Recognition
cs.CV
Recent advances in visual recognition show overarching success by virtue of large amounts of supervised data. However,the acquisition of a large supervised dataset is often challenging. This is also true for intelligent transportation applications, i.e., traffic sign recognition. For example, a model trained with data ...
computer science
30,431
The Best of Both Worlds: Learning Geometry-based 6D Object Pose Estimation
cs.CV
We address the task of estimating the 6D pose of known rigid objects, from RGB and RGB-D input images, in scenarios where the objects are heavily occluded. Our main contribution is a new modular processing pipeline. The first module localizes all known objects in the image via an existing instance segmentation network....
computer science
30,432
Zero-Shot Visual Recognition using Semantics-Preserving Adversarial Embedding Network
cs.CV
We propose a novel framework called Semantics-Preserving Adversarial Embedding Network (SP-AEN) for zero-shot visual recognition (ZSL), where test images and their classes are both unseen during training. SP-AEN aims to tackle the inherent problem --- semantic loss --- in the prevailing family of embedding-based ZSL, w...
computer science
30,433
Blind Image Deblurring Using Row-Column Sparse Representations
cs.CV
Blind image deblurring is a particularly challenging inverse problem where the blur kernel is unknown and must be estimated en route to recover the deblurred image. The problem is of strong practical relevance since many imaging devices such as cellphone cameras, must rely on deblurring algorithms to yield satisfactory...
computer science
30,434
Learning Latent Super-Events to Detect Multiple Activities in Videos
cs.CV
In this paper, we introduce the concept of learning latent \emph{super-events} from activity videos, and present how it benefits activity detection in continuous videos. We define a super-event as a set of multiple events occurring together in videos with a particular temporal organization; it is the opposite concept o...
computer science
30,435
Learning to Forecast Videos of Human Activity with Multi-granularity Models and Adaptive Rendering
cs.CV
We propose an approach for forecasting video of complex human activity involving multiple people. Direct pixel-level prediction is too simple to handle the appearance variability in complex activities. Hence, we develop novel intermediate representations. An architecture combining a hierarchical temporal model for pred...
computer science
30,436
What's in my closet?: Image classification using fuzzy logic
cs.CV
A fuzzy system was created in MATLAB to identify an item of clothing as a dress, shirt, or pair of pants from a series of input images. The system was initialized using a high-contrast vector-image of each item of clothing as the state closest to a direct solution. Nine other user-input images (three of each item) were...
computer science
30,437
Learning Semantic Concepts and Order for Image and Sentence Matching
cs.CV
Image and sentence matching has made great progress recently, but it remains challenging due to the large visual-semantic discrepancy. This mainly arises from that the representation of pixel-level image usually lacks of high-level semantic information as in its matched sentence. In this work, we propose a semantic-enh...
computer science
30,438
Saliency Preservation in Low-Resolution Grayscale Images
cs.CV
Visual salience detection originated over 500 million years ago and is one of the most efficient mechanisms in nature. In contrast, state-of-the-art computational saliency models are often complex and inefficient, primarily because they process high-resolution color (HC) images. Insights into the evolutionary origins o...
computer science
30,439
Unsupervised Multi-Domain Image Translation with Domain-Specific Encoders/Decoders
cs.CV
Unsupervised Image-to-Image Translation achieves spectacularly advanced developments nowadays. However, recent approaches mainly focus on one model with two domains, which may face heavy burdens with large cost of $O(n^2)$ training time and model parameters, under such a requirement that $n$ domains are freely transfer...
computer science
30,440
Show-and-Fool: Crafting Adversarial Examples for Neural Image Captioning
cs.CV
Modern neural image captioning systems typically adopt the encoder-decoder framework consisting of two principal components: a convolutional neural network (CNN) for image feature extraction and a recurrent neural network (RNN) for caption generation. Inspired by the robustness analysis of CNN-based image classifiers t...
computer science
30,441
Automatic Segmentation and Overall Survival Prediction in Gliomas using Fully Convolutional Neural Network and Texture Analysis
cs.CV
In this paper, we use a fully convolutional neural network (FCNN) for the segmentation of gliomas from Magnetic Resonance Images (MRI). A fully automatic, voxel based classification was achieved by training a 23 layer deep FCNN on 2-D slices extracted from patient volumes. The network was trained on slices extracted fr...
computer science
30,442
Separating Reflection and Transmission Images in the Wild
cs.CV
The reflections caused by common semi-reflectors, such as glass windows, can severely impact the performance of computer vision algorithms. State-of-the-art works can successfully remove reflections on synthetic data and in controlled scenarios. However, they are based on strong assumptions and fail to generalize to re...
computer science
30,443
Detecting Curve Text in the Wild: New Dataset and New Solution
cs.CV
Scene text detection has been made great progress in recent years. The detection manners are evolving from axis-aligned rectangle to rotated rectangle and further to quadrangle. However, current datasets contain very little curve text, which can be widely observed in scene images such as signboard, product name and so ...
computer science
30,444
Beyond the Pixel-Wise Loss for Topology-Aware Delineation
cs.CV
Delineation of curvilinear structures is an important problem in Computer Vision with multiple practical applications. With the advent of Deep Learning, many current approaches on automatic delineation have focused on finding more powerful deep architectures, but have continued using the habitual pixel-wise losses such...
computer science
30,445
Stretching Domain Adaptation: How far is too far?
cs.CV
While deep learning has led to significant advances in visual recognition over the past few years, such advances often require a lot of annotated data. While unsupervised domain adaptation has emerged as an alternative approach that doesn't require as much annotated data, prior evaluations of domain adaptation have bee...
computer science
30,446
Joint 3D Proposal Generation and Object Detection from View Aggregation
cs.CV
We present AVOD, an Aggregate View Object Detection network for autonomous driving scenarios. The proposed neural network architecture uses LIDAR point clouds and RGB images to generate features that are shared by two subnetworks: a region proposal network (RPN) and a second stage detector network. The proposed RPN use...
computer science
30,447
From Lifestyle Vlogs to Everyday Interactions
cs.CV
A major stumbling block to progress in understanding basic human interactions, such as getting out of bed or opening a refrigerator, is lack of good training data. Most past efforts have gathered this data explicitly: starting with a laundry list of action labels, and then querying search engines for videos tagged with...
computer science
30,448
Burst Denoising with Kernel Prediction Networks
cs.CV
We present a technique for jointly denoising bursts of images taken from a handheld camera. In particular, we propose a convolutional neural network architecture for predicting spatially varying kernels that can both align and denoise frames, a synthetic data generation approach based on a realistic noise formation mod...
computer science
30,449
Top-down Flow Transformer Networks
cs.CV
We study the deformation fields of feature maps across convolutional network layers under explicit top-down spatial transformations. We propose top-down flow transformer (TFT) by focusing on three transformations: translation, rotation, and scaling. Flow transformation generators, under controllable parameters, are lea...
computer science
30,450
Deep Regionlets for Object Detection
cs.CV
A key challenge in generic object detection is being to handle large variations in object scale, poses, viewpoints, especially part deformations when determining the location for specified object categories. Recent advances in deep neural networks have achieved promising results for object detection by extending the tr...
computer science
30,451
Tomographic Reconstruction using Global Statistical Prior
cs.CV
Recent research in tomographic reconstruction is motivated by the need to efficiently recover detailed anatomy from limited measurements. One of the ways to compensate for the increasingly sparse sets of measurements is to exploit the information from templates, i.e., prior data available in the form of already reconst...
computer science
30,452
CURE-TSR: Challenging Unreal and Real Environments for Traffic Sign Recognition
cs.CV
In this paper, we investigate the robustness of traffic sign recognition algorithms under challenging conditions. Existing datasets are limited in terms of their size and challenging condition coverage, which motivated us to generate the Challenging Unreal and Real Environments for Traffic Sign Recognition (CURE-TSR) d...
computer science
30,453
Stacked Conditional Generative Adversarial Networks for Jointly Learning Shadow Detection and Shadow Removal
cs.CV
Understanding shadows from a single image spontaneously derives into two types of task in previous studies, containing shadow detection and shadow removal. In this paper, we present a multi-task perspective, which is not embraced by any existing work, to jointly learn both detection and removal in an end-to-end fashion...
computer science
30,454
TV-GAN: Generative Adversarial Network Based Thermal to Visible Face Recognition
cs.CV
This work tackles the face recognition task on images captured using thermal camera sensors which can operate in the non-light environment. While it can greatly increase the scope and benefits of the current security surveillance systems, performing such a task using thermal images is a challenging problem compared to ...
computer science
30,455
Broadcasting Convolutional Network
cs.CV
While convolutional neural networks (CNNs) are widely used for handling spatio-temporal scenes, there exist limitations in reasoning relations among spatial features caused by their inherent structures, which have been issued consistently in many studies. In this paper, we propose Broadcasting Convolutional Networks (B...
computer science
30,456
Maximum Classifier Discrepancy for Unsupervised Domain Adaptation
cs.CV
In this work, we present a method for unsupervised domain adaptation (UDA), where we aim to transfer knowledge from a label-rich domain (i.e., a source domain) to an unlabeled domain (i.e., a target domain). Many adversarial learning methods have been proposed for this task. These methods train domain classifier networ...
computer science
30,457
Consistent Multiple Graph Matching with Multi-layer Random Walks Synchronization
cs.CV
We address the correspondence search problem among multiple graphs with complex properties while considering the matching consistency. We describe each pair of graphs by combining multiple attributes, then jointly match them in a unified framework. The main contribution of this paper is twofold. First, we formulate the...
computer science
30,458
In-Place Activated BatchNorm for Memory-Optimized Training of DNNs
cs.CV
In this work we present In-Place Activated Batch Normalization (InPlace-ABN) - a novel approach to drastically reduce the training memory footprint of modern deep neural networks in a computationally efficient way. Our solution substitutes the conventionally used succession of BatchNorm + Activation layers with a singl...
computer science
30,459
Disentangled Person Image Generation
cs.CV
Generating novel, yet realistic, images of persons is a challenging task due to the complex interplay between the different image factors, such as the foreground, background and pose information. In this work, we aim at generating such images based on a novel, two-stage reconstruction pipeline that learns a disentangle...
computer science
30,460
Creating Capsule Wardrobes from Fashion Images
cs.CV
We propose to automatically create capsule wardrobes. Given an inventory of candidate garments and accessories, the algorithm must assemble a minimal set of items that provides maximal mix-and-match outfits. We pose the task as a subset selection problem. To permit efficient subset selection over the space of all outfi...
computer science
30,461
Incremental Learning in Deep Convolutional Neural Networks Using Partial Network Sharing
cs.CV
Deep convolutional neural network (DCNN) based supervised learning is a widely practiced approach for large-scale image classification. However, retraining these large networks to accommodate new, previously unseen data demands high computational time and energy requirements. Also, previously seen training samples may ...
computer science
30,462
On the Duality Between Retinex and Image Dehazing
cs.CV
Image dehazing deals with the removal of undesired loss of visibility in outdoor images due to the presence of fog. Retinex is a color vision model mimicking the ability of the Human Visual System to robustly discount varying illuminations when observing a scene under different spectral lighting conditions. Retinex has...
computer science
30,463
Super-FAN: Integrated facial landmark localization and super-resolution of real-world low resolution faces in arbitrary poses with GANs
cs.CV
This paper addresses two challenging tasks: improving the quality of real-world low resolution face images via super-resolution and accurately locating the facial landmarks on such poor resolution images. To this end, we make the following 5 contributions: (a) we propose Super-FAN: the very first end-to-end system that...
computer science
30,464
Hybrid eye center localization using cascaded regression and hand-crafted model fitting
cs.CV
We propose a new cascaded regressor for eye center detection. Previous methods start from a face or an eye detector and use either advanced features or powerful regressors for eye center localization, but not both. Instead, we detect the eyes more accurately using an existing facial feature alignment method. We improve...
computer science
30,465
Stacked Denoising Autoencoders and Transfer Learning for Immunogold Particles Detection and Recognition
cs.CV
In this paper we present a system for the detection of immunogold particles and a Transfer Learning (TL) framework for the recognition of these immunogold particles. Immunogold particles are part of a high-magnification method for the selective localization of biological molecules at the subcellular level only visible ...
computer science
30,466
Self-supervised Multi-level Face Model Learning for Monocular Reconstruction at over 250 Hz
cs.CV
The reconstruction of dense 3D models of face geometry and appearance from a single image is highly challenging and ill-posed. To constrain the problem, many approaches rely on strong priors, such as parametric face models learned from limited 3D scan data. However, prior models restrict generalization of the true dive...
computer science
30,467
MoDL: Model Based Deep Learning Architecture for Inverse Problems
cs.CV
We introduce a model-based image reconstruction framework with a convolution neural network (CNN) based regularization prior. While CNN based image recovery methods are ideally suited for inverse problems with a convolutional structure, deep learning architectures for problems that do not have a convolutional structure...
computer science
30,468
Learned Perceptual Image Enhancement
cs.CV
Learning a typical image enhancement pipeline involves minimization of a loss function between enhanced and reference images. While L1 and L2 losses are perhaps the most widely used functions for this purpose, they do not necessarily lead to perceptually compelling results. In this paper, we show that adding a learned ...
computer science
30,469
Multi-Scale Video Frame-Synthesis Network with Transitive Consistency Loss
cs.CV
Traditional approaches to interpolate/extrapolate frames in a video sequence require accurate pixel correspondences between images, e.g., using optical flow. Their results stem on the accuracy of optical flow estimation, and could generate heavy artifacts when flow estimation failed. Recently methods using auto-encoder...
computer science
30,470
Network Analysis for Explanation
cs.CV
Safety critical systems strongly require the quality aspects of artificial intelligence including explainability. In this paper, we analyzed a trained network to extract features which mainly contribute the inference. Based on the analysis, we developed a simple solution to generate explanations of the inference proces...
computer science
30,471
Deep Image Smoothing based on Texture and Structure Guidance
cs.CV
Image smoothing is a fundamental task in computer vision, which aims to retain salient structures and remove insignificant textures. In this paper, we tackle the natural deficiency of existing methods, that they cannot properly distinguish textures and structures with similar low-level appearance. While deep learning a...
computer science
30,472
Chaining Identity Mapping Modules for Image Denoising
cs.CV
We propose to learn a fully-convolutional network model that consists of a Chain of Identity Mapping Modules (CIMM) for image denoising. The CIMM structure possesses two distinctive features that are important for the noise removal task. Firstly, each residual unit employs identity mappings as the skip connections and ...
computer science
30,473
Dense Optical Flow based Change Detection Network Robust to Difference of Camera Viewpoints
cs.CV
This paper presents a novel method for detecting scene changes from a pair of images with a difference of camera viewpoints using a dense optical flow based change detection network. In the case that camera poses of input images are fixed or known, such as with surveillance and satellite cameras, the pixel corresponden...
computer science
30,474
Compact Hash Code Learning with Binary Deep Neural Network
cs.CV
In this work, we firstly propose deep network models and learning algorithms for learning binary hash codes given image representations under both unsupervised and supervised manners. Then, by leveraging the powerful capacity of convolutional neural networks, we propose an end-to-end architecture which jointly learns t...
computer science
30,475
Shape from Shading through Shape Evolution
cs.CV
In this paper, we address the shape-from-shading problem by training deep networks with synthetic images. Unlike conventional approaches that combine deep learning and synthetic imagery, we propose an approach that does not need any external shape dataset to render synthetic images. Our approach consists of two synergi...
computer science
30,476
Learning 2D Gabor Filters by Infinite Kernel Learning Regression
cs.CV
Gabor functions have wide-spread applications in image processing and computer vision. In this paper, we prove that 2D Gabor functions are translation-invariant positive-definite kernels and propose a novel formulation for the problem of image representation with Gabor functions based on infinite kernel learning regres...
computer science
30,477
Defense against Adversarial Attacks Using High-Level Representation Guided Denoiser
cs.CV
Neural networks are vulnerable to adversarial examples. This phenomenon poses a threat to their applications in security-sensitive systems. It is thus important to develop effective defending methods to strengthen the robustness of neural networks to adversarial attacks. Many techniques have been proposed, but only a f...
computer science
30,478
Direct and Real-Time Cardiovascular Risk Prediction
cs.CV
Coronary artery calcium (CAC) burden quantified in low-dose chest CT is a predictor of cardiovascular events. We propose an automatic method for CAC quantification, circumventing intermediate segmentation of CAC. The method determines a bounding box around the heart using a ConvNet for localization. Subsequently, a ded...
computer science
30,479
A Frequency Domain Neural Network for Fast Image Super-resolution
cs.CV
In this paper, we present a frequency domain neural network for image super-resolution. The network employs the convolution theorem so as to cast convolutions in the spatial domain as products in the frequency domain. Moreover, the non-linearity in deep nets, often achieved by a rectifier unit, is here cast as a convol...
computer science
30,480
An Integrated Platform for Live 3D Human Reconstruction and Motion Capturing
cs.CV
The latest developments in 3D capturing, processing, and rendering provide means to unlock novel 3D application pathways. The main elements of an integrated platform, which target tele-immersion and future 3D applications, are described in this paper, addressing the tasks of real-time capturing, robust 3D human shape/a...
computer science
30,481
Image Inpainting for High-Resolution Textures using CNN Texture Synthesis
cs.CV
Deep neural networks have been successfully applied to problems such as image segmentation, image super-resolution, coloration and image inpainting. In this work we propose the use of convolutional neural networks (CNN) for image inpainting of large regions in high-resolution textures. Due to limited computational reso...
computer science
30,482
Weaving Multi-scale Context for Single Shot Detector
cs.CV
Aggregating context information from multiple scales has been proved to be effective for improving accuracy of Single Shot Detectors (SSDs) on object detection. However, existing multi-scale context fusion techniques are computationally expensive, which unfavorably diminishes the advantageous speed of SSD. In this work...
computer science
30,483
Combining Deep Universal Features, Semantic Attributes, and Hierarchical Classification for Zero-Shot Learning
cs.CV
We address zero-shot (ZS) learning, building upon prior work in hierarchical classification by combining it with approaches based on semantic attribute estimation. For both non-novel and novel image classes we compare multiple formulations of the problem, starting with deep universal features in each case. We investiga...
computer science
30,484
Minimal Solvers for Monocular Rolling Shutter Compensation under Ackermann Motion
cs.CV
Modern automotive vehicles are often equipped with a budget commercial rolling shutter camera. These devices often produce distorted images due to the inter-row delay of the camera while capturing the image. Recent methods for monocular rolling shutter motion compensation utilize blur kernel and the straightness proper...
computer science
30,485
Class Rectification Hard Mining for Imbalanced Deep Learning
cs.CV
Recognising detailed facial or clothing attributes in images of people is a challenging task for computer vision, especially when the training data are both in very large scale and extremely imbalanced among different attribute classes. To address this problem, we formulate a novel scheme for batch incremental hard sam...
computer science
30,486
Basic Thresholding Classification
cs.CV
In this thesis, we propose a light-weight sparsity-based algorithm, basic thresholding classifier (BTC), for classification applications (such as face identification, hyper-spectral image classification, etc.) which is capable of identifying test samples extremely rapidly and performing high classification accuracy. Or...
computer science
30,487
Transformational Sparse Coding
cs.CV
A fundamental problem faced by object recognition systems is that objects and their features can appear in different locations, scales and orientations. Current deep learning methods attempt to achieve invariance to local translations via pooling, discarding the locations of features in the process. Other approaches ex...
computer science
30,488
IQA: Visual Question Answering in Interactive Environments
cs.CV
We introduce Interactive Question Answering (IQA), the task of answering questions that require an autonomous agent to interact with a dynamic visual environment. IQA presents the agent with a scene and a question, like: "Are there any apples in the fridge?" The agent must navigate around the scene, acquire visual unde...
computer science
30,489
Fine-Grained Object Recognition and Zero-Shot Learning in Remote Sensing Imagery
cs.CV
Fine-grained object recognition that aims to identify the type of an object among a large number of subcategories is an emerging application with the increasing resolution that exposes new details in image data. Traditional fully supervised algorithms fail to handle this problem where there is low between-class varianc...
computer science
30,490
MapNet: Geometry-Aware Learning of Maps for Camera Localization
cs.CV
Maps are a key component in image-based camera localization and visual SLAM systems: they are used to establish geometric constraints between images, correct drift in relative pose estimation, and relocalize cameras after lost tracking. The exact definitions of maps, however, are often application-specific and hand-cra...
computer science
30,491
Visual aesthetic analysis using deep neural network: model and techniques to increase accuracy without transfer learning
cs.CV
We train a deep Convolutional Neural Network (CNN) from scratch for visual aesthetic analysis in images and discuss techniques we adopt to improve the accuracy. We avoid the prevalent best transfer learning approaches of using pretrained weights to perform the task and train a model from scratch to get accuracy of 78.7...
computer science
30,492
Deep Koalarization: Image Colorization using CNNs and Inception-ResNet-v2
cs.CV
We review some of the most recent approaches to colorize gray-scale images using deep learning methods. Inspired by these, we propose a model which combines a deep Convolutional Neural Network trained from scratch with high-level features extracted from the Inception-ResNet-v2 pre-trained model. Thanks to its fully con...
computer science
30,493
CycleGAN Face-off
cs.CV
Face-off is an interesting case of style transfer where the facial expressions and attributes of one person could be fully transformed to another face. We are interested in the unsupervised training process which only requires two sequences of unaligned video frames from each person and learns what shared attributes to...
computer science
30,494
SPP-Net: Deep Absolute Pose Regression with Synthetic Views
cs.CV
Image based localization is one of the important problems in computer vision due to its wide applicability in robotics, augmented reality, and autonomous systems. There is a rich set of methods described in the literature how to geometrically register a 2D image w.r.t.\ a 3D model. Recently, methods based on deep (and ...
computer science
30,495
Single-Shot Multi-Person 3D Body Pose Estimation From Monocular RGB Input
cs.CV
We propose a new efficient single-shot method for multi-person 3D pose estimation in general scenes from a monocular RGB camera. Our fully convolutional DNN-based approach jointly infers 2D and 3D joint locations on the basis of an extended 3D location map supported by body part associations. This new formulation enabl...
computer science
30,496
Geometry Guided Adversarial Facial Expression Synthesis
cs.CV
Facial expression synthesis has drawn much attention in the field of computer graphics and pattern recognition. It has been widely used in face animation and recognition. However, it is still challenging due to the high-level semantic presence of large and non-linear face geometry variations. This paper proposes a Geom...
computer science
30,497
3D Facial Expression Reconstruction using Cascaded Regression
cs.CV
This paper proposes a novel model fitting algorithm for 3D facial expression reconstruction from a single image. Face expression reconstruction from a single image is a challenging task in computer vision. Most state-of-the-art methods fit the input image to a 3D Morphable Model (3DMM). These methods need to solve a st...
computer science
30,498
Dynamics Transfer GAN: Generating Video by Transferring Arbitrary Temporal Dynamics from a Source Video to a Single Target Image
cs.CV
In this paper, we propose Dynamics Transfer GAN; a new method for generating video sequences based on generative adversarial learning. The spatial constructs of a generated video sequence are acquired from the target image. The dynamics of the generated video sequence are imported from a source video sequence, with arb...
computer science
30,499
FHEDN: A based on context modeling Feature Hierarchy Encoder-Decoder Network for face detection
cs.CV
Because of affected by weather conditions, camera pose and range, etc. Objects are usually small, blur, occluded and diverse pose in the images gathered from outdoor surveillance cameras or access control system. It is challenging and important to detect faces precisely for face recognition system in the field of publi...
computer science
30,500
The Effectiveness of Data Augmentation for Detection of Gastrointestinal Diseases from Endoscopical Images
cs.CV
The lack, due to privacy concerns, of large public databases of medical pathologies is a well-known and major problem, substantially hindering the application of deep learning techniques in this field. In this article, we investigate the possibility to supply to the deficiency in the number of data by means of data aug...
computer science
30,501
Can We Teach Computers to Understand Art? Domain Adaptation for Enhancing Deep Networks Capacity to De-Abstract Art
cs.CV
Humans comprehend a natural scene at a single glance; painters and other visual artists, through their abstract representations, stressed this capacity to the limit. The performance of computer vision solutions matched that of humans in many problems of visual recognition. In this paper we address the problem of recogn...
computer science