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28,702
Beyond Forward Shortcuts: Fully Convolutional Master-Slave Networks (MSNets) with Backward Skip Connections for Semantic Segmentation
cs.CV
Recent deep CNNs contain forward shortcut connections; i.e. skip connections from low to high layers. Reusing features from lower layers that have higher resolution (location information) benefit higher layers to recover lost details and mitigate information degradation. However, during inference the lower layers do no...
computer science
28,703
Spectral Filter Tracking
cs.CV
Visual object tracking is a challenging computer vision task with numerous real-world applications. Here we propose a simple but efficient Spectral Filter Tracking (SFT)method. To characterize rotational and translation invariance of tracking targets, the candidate image region is models as a pixelwise grid graph. Inst...
computer science
28,704
Batch based Monocular SLAM for Egocentric Videos
cs.CV
Simultaneous Localization and Mapping (SLAM) from a monocular camera has been a well researched area. However, estimating camera pose and 3d geometry reliably for egocentric videos still remain a challenge. Some of the common causes of failures are dominant 3D rotations and low parallax between successive frames, resul...
computer science
28,705
Fast Feature Fool: A data independent approach to universal adversarial perturbations
cs.CV
State-of-the-art object recognition Convolutional Neural Networks (CNNs) are shown to be fooled by image agnostic perturbations, called universal adversarial perturbations. It is also observed that these perturbations generalize across multiple networks trained on the same target data. However, these algorithms require...
computer science
28,706
One-shot Face Recognition by Promoting Underrepresented Classes
cs.CV
In this paper, we study the problem of training large-scale face identification model with imbalanced training data. This problem naturally exists in many real scenarios including large-scale celebrity recognition, movie actor annotation, etc. Our solution contains two components. First, we build a face feature extract...
computer science
28,707
Domain Adaptation for Resume Classification Using Convolutional Neural Networks
cs.CV
We propose a novel method for classifying resume data of job applicants into 27 different job categories using convolutional neural networks. Since resume data is costly and hard to obtain due to its sensitive nature, we use domain adaptation. In particular, we train a classifier on a large number of freely available j...
computer science
28,708
Fast Screening Algorithm for Rotation and Scale Invariant Template Matching
cs.CV
This paper presents a generic pre-processor for expediting conventional template matching techniques. Instead of locating the best matched patch in the reference image to a query template via exhaustive search, the proposed algorithm rules out regions with no possible matches with minimum computational efforts. While w...
computer science
28,709
Faster Than Real-time Facial Alignment: A 3D Spatial Transformer Network Approach in Unconstrained Poses
cs.CV
Facial alignment involves finding a set of landmark points on an image with a known semantic meaning. However, this semantic meaning of landmark points is often lost in 2D approaches where landmarks are either moved to visible boundaries or ignored as the pose of the face changes. In order to extract consistent alignme...
computer science
28,710
Exploiting Convolutional Representations for Multiscale Human Settlement Detection
cs.CV
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 extractors without the need for network retraining on three remote sensing tasks i...
computer science
28,711
Hashed Binary Search Sampling for Convolutional Network Training with Large Overhead Image Patches
cs.CV
Very large overhead imagery associated with ground truth maps has the potential to generate billions of training image patches for machine learning algorithms. However, random sampling selection criteria often leads to redundant and noisy-image patches for model training. With minimal research efforts behind this chall...
computer science
28,712
Learning Fashion Compatibility with Bidirectional LSTMs
cs.CV
The ubiquity of online fashion shopping demands effective recommendation services for customers. In this paper, we study two types of fashion recommendation: (i) suggesting an item that matches existing components in a set to form a stylish outfit (a collection of fashion items), and (ii) generating an outfit with mult...
computer science
28,713
Skeleton-Based Human Action Recognition with Global Context-Aware Attention LSTM Networks
cs.CV
Human action recognition in 3D skeleton sequences has attracted a lot of research attention. Recently, Long Short-Term Memory (LSTM) networks have shown promising performance in this task due to their strengths in modeling the dependencies and dynamics in sequential data. As not all skeletal joints are informative for ...
computer science
28,714
Transitioning between Convolutional and Fully Connected Layers in Neural Networks
cs.CV
Digital pathology has advanced substantially over the last decade however tumor localization continues to be a challenging problem due to highly complex patterns and textures in the underlying tissue bed. The use of convolutional neural networks (CNNs) to analyze such complex images has been well adopted in digital pat...
computer science
28,715
A Novel Deep Learning Architecture for Testis Histology Image Classification
cs.CV
Unlike other histology analysis, classification of tubule status in testis histology is very challenging due to their high similarity of texture and shape. Traditional deep learning networks have difficulties to capture nuance details among different tubule categories. In this paper, we propose a novel deep learning ar...
computer science
28,716
Discovering Class-Specific Pixels for Weakly-Supervised Semantic Segmentation
cs.CV
We propose an approach to discover class-specific pixels for the weakly-supervised semantic segmentation task. We show that properly combining saliency and attention maps allows us to obtain reliable cues capable of significantly boosting the performance. First, we propose a simple yet powerful hierarchical approach to...
computer science
28,717
The Devil is in the Decoder
cs.CV
Many machine vision applications require predictions for every pixel of the input image (for example semantic segmentation, boundary detection). Models for such problems usually consist of encoders which decreases spatial resolution while learning a high-dimensional representation, followed by decoders who recover the ...
computer science
28,718
Recognizing and Curating Photo Albums via Event-Specific Image Importance
cs.CV
Automatic organization of personal photos is a problem with many real world ap- plications, and can be divided into two main tasks: recognizing the event type of the photo collection, and selecting interesting images from the collection. In this paper, we attempt to simultaneously solve both tasks: album-wise event rec...
computer science
28,719
Learning Unified Embedding for Apparel Recognition
cs.CV
In apparel recognition, specialized models (e.g. models trained for a particular vertical like dresses) can significantly outperform general models (i.e. models that cover a wide range of verticals). Therefore, deep neural network models are often trained separately for different verticals. However, using specialized m...
computer science
28,720
Face Alignment Robust to Pose, Expressions and Occlusions
cs.CV
We propose an Ensemble of Robust Constrained Local Models for alignment of faces in the presence of significant occlusions and of any unknown pose and expression. To account for partial occlusions we introduce, Robust Constrained Local Models, that comprises of a deformable shape and local landmark appearance model and...
computer science
28,721
Image Projective Invariants
cs.CV
In this paper, we propose relative projective differential invariants (RPDIs) which are invariant to general projective transformations. By using RPDIs and the structural frame of integral invariant, projective weighted moment invariants (PIs) can be constructed very easily. It is first proved that a kind of projective...
computer science
28,722
When Unsupervised Domain Adaptation Meets Tensor Representations
cs.CV
Domain adaption (DA) allows machine learning methods trained on data sampled from one distribution to be applied to data sampled from another. It is thus of great practical importance to the application of such methods. Despite the fact that tensor representations are widely used in Computer Vision to capture multi-lin...
computer science
28,723
Drone-based Object Counting by Spatially Regularized Regional Proposal Network
cs.CV
Existing counting methods often adopt regression-based approaches and cannot precisely localize the target objects, which hinders the further analysis (e.g., high-level understanding and fine-grained classification). In addition, most of prior work mainly focus on counting objects in static environments with fixed came...
computer science
28,724
Orthogonal and Idempotent Transformations for Learning Deep Neural Networks
cs.CV
Identity transformations, used as skip-connections in residual networks, directly connect convolutional layers close to the input and those close to the output in deep neural networks, improving information flow and thus easing the training. In this paper, we introduce two alternative linear transforms, orthogonal tran...
computer science
28,725
Detecting Parts for Action Localization
cs.CV
In this paper, we propose a new framework for action localization that tracks people in videos and extracts full-body human tubes, i.e., spatio-temporal regions localizing actions, even in the case of occlusions or truncations. This is achieved by training a novel human part detector that scores visible parts while reg...
computer science
28,726
Supervising Neural Attention Models for Video Captioning by Human Gaze Data
cs.CV
The attention mechanisms in deep neural networks are inspired by human's attention that sequentially focuses on the most relevant parts of the information over time to generate prediction output. The attention parameters in those models are implicitly trained in an end-to-end manner, yet there have been few trials to e...
computer science
28,727
Modeling the Intra-class Variability for Liver Lesion Detection using a Multi-class Patch-based CNN
cs.CV
Automatic detection of liver lesions in CT images poses a great challenge for researchers. In this work we present a deep learning approach that models explicitly the variability within the non-lesion class, based on prior knowledge of the data, to support an automated lesion detection system. A multi-class convolution...
computer science
28,728
Deep View-Sensitive Pedestrian Attribute Inference in an end-to-end Model
cs.CV
Pedestrian attribute inference is a demanding problem in visual surveillance that can facilitate person retrieval, search and indexing. To exploit semantic relations between attributes, recent research treats it as a multi-label image classification task. The visual cues hinting at attributes can be strongly localized ...
computer science
28,729
Discriminative convolutional Fisher vector network for action recognition
cs.CV
In this work we propose a novel neural network architecture for the problem of human action recognition in videos. The proposed architecture expresses the processing steps of classical Fisher vector approaches, that is dimensionality reduction by principal component analysis (PCA) projection, Gaussian mixture model (GM...
computer science
28,730
Channel Pruning for Accelerating Very Deep Neural Networks
cs.CV
In this paper, we introduce a new channel pruning method to accelerate very deep convolutional neural networks.Given a trained CNN model, we propose an iterative two-step algorithm to effectively prune each layer, by a LASSO regression based channel selection and least square reconstruction. We further generalize this ...
computer science
28,731
Object-Extent Pooling for Weakly Supervised Single-Shot Localization
cs.CV
In the face of scarcity in detailed training annotations, the ability to perform object localization tasks in real-time with weak-supervision is very valuable. However, the computational cost of generating and evaluating region proposals is heavy. We adapt the concept of Class Activation Maps (CAM) into the very first ...
computer science
28,732
Domain-adversarial neural networks to address the appearance variability of histopathology images
cs.CV
Preparing and scanning histopathology slides consists of several steps, each with a multitude of parameters. The parameters can vary between pathology labs and within the same lab over time, resulting in significant variability of the tissue appearance that hampers the generalization of automatic image analysis methods...
computer science
28,733
Pose-Invariant Face Alignment with a Single CNN
cs.CV
Face alignment has witnessed substantial progress in the last decade. One of the recent focuses has been aligning a dense 3D face shape to face images with large head poses. The dominant technology used is based on the cascade of regressors, e.g., CNN, which has shown promising results. Nonetheless, the cascade of CNNs...
computer science
28,734
STag: A Stable Fiducial Marker System
cs.CV
In this paper, we propose STag, a fiducial marker system that provides stable pose estimation. The outer square border of the marker is used for detection and pose estimation. This is followed by a novel pose refinement step using the inner circular border. The refined pose is more stable and robust across viewing cond...
computer science
28,735
Automatic Segmentation of Retinal Vasculature
cs.CV
Segmentation of retinal vessels from retinal fundus images is the key step in the automatic retinal image analysis. In this paper, we propose a new unsupervised automatic method to segment the retinal vessels from retinal fundus images. Contrast enhancement and illumination correction are carried out through a series o...
computer science
28,736
Multi-Branch Fully Convolutional Network for Face Detection
cs.CV
Face detection is a fundamental problem in computer vision. It is still a challenging task in unconstrained conditions due to significant variations in scale, pose, expressions, and occlusion. In this paper, we propose a multi-branch fully convolutional network (MB-FCN) for face detection, which considers both efficien...
computer science
28,737
Sunrise or Sunset: Selective Comparison Learning for Subtle Attribute Recognition
cs.CV
The difficulty of image recognition has gradually increased from general category recognition to fine-grained recognition and to the recognition of some subtle attributes such as temperature and geolocation. In this paper, we try to focus on the classification between sunrise and sunset and hope to give a hint about ho...
computer science
28,738
ThiNet: A Filter Level Pruning Method for Deep Neural Network Compression
cs.CV
We propose an efficient and unified framework, namely ThiNet, to simultaneously accelerate and compress CNN models in both training and inference stages. We focus on the filter level pruning, i.e., the whole filter would be discarded if it is less important. Our method does not change the original network structure, th...
computer science
28,739
Unsupervised Object Discovery and Co-Localization by Deep Descriptor Transforming
cs.CV
Reusable model design becomes desirable with the rapid expansion of computer vision and machine learning applications. In this paper, we focus on the reusability of pre-trained deep convolutional models. Specifically, different from treating pre-trained models as feature extractors, we reveal more treasures beneath con...
computer science
28,740
Adaptive Feeding: Achieving Fast and Accurate Detections by Adaptively Combining Object Detectors
cs.CV
Object detection aims at high speed and accuracy simultaneously. However, fast models are usually less accurate, while accurate models cannot satisfy our need for speed. A fast model can be 10 times faster but 50\% less accurate than an accurate model. In this paper, we propose Adaptive Feeding (AF) to combine a fast (...
computer science
28,741
Semantic Segmentation with Reverse Attention
cs.CV
Recent development in fully convolutional neural network enables efficient end-to-end learning of semantic segmentation. Traditionally, the convolutional classifiers are taught to learn the representative semantic features of labeled semantic objects. In this work, we propose a reverse attention network (RAN) architect...
computer science
28,742
Scalable Full Flow with Learned Binary Descriptors
cs.CV
We propose a method for large displacement optical flow in which local matching costs are learned by a convolutional neural network (CNN) and a smoothness prior is imposed by a conditional random field (CRF). We tackle the computation- and memory-intensive operations on the 4D cost volume by a min-projection which redu...
computer science
28,743
cvpaper.challenge in 2016: Futuristic Computer Vision through 1,600 Papers Survey
cs.CV
The paper gives futuristic challenges disscussed in the cvpaper.challenge. In 2015 and 2016, we thoroughly study 1,600+ papers in several conferences/journals such as CVPR/ICCV/ECCV/NIPS/PAMI/IJCV.
computer science
28,744
A Novel Space-Time Representation on the Positive Semidefinite Con for Facial Expression Recognition
cs.CV
In this paper, we study the problem of facial expression recognition using a novel space-time geometric representation. We describe the temporal evolution of facial landmarks as parametrized trajectories on the Riemannian manifold of positive semidefinite matrices of fixed-rank. Our representation has the advantage to ...
computer science
28,745
Video Object Segmentation using Tracked Object Proposals
cs.CV
We present an approach to semi-supervised video object segmentation, in the context of the DAVIS 2017 challenge. Our approach combines category-based object detection, category-independent object appearance segmentation and temporal object tracking. We are motivated by the fact that the objects semantic category tends ...
computer science
28,746
Pictures of Combinatorial Cubes
cs.CV
We prove that the 8-point algorithm always fails to reconstruct a unique fundamental matrix $F$ independent on the camera positions, when its input are image point configurations that are perspective projections of the vertices of a combinatorial cube in $\mathbb{R}^3$. We give an algorithm that improves the 7- and 8-p...
computer science
28,747
The iNaturalist Challenge 2017 Dataset
cs.CV
Existing image classification datasets used in computer vision tend to have an even number of images for each object category. In contrast, the natural world is heavily imbalanced, as some species are more abundant and easier to photograph than others. To encourage further progress in challenging real world conditions ...
computer science
28,748
Local Geometry Inclusive Global Shape Representation
cs.CV
Knowledge of shape geometry plays a pivotal role in many shape analysis applications. In this paper we introduce a local geometry-inclusive global representation of 3D shapes based on computation of the shortest quasi-geodesic paths between all possible pairs of points on the 3D shape manifold. In the proposed represen...
computer science
28,749
Temporal Convolution Based Action Proposal: Submission to ActivityNet 2017
cs.CV
In this notebook paper, we describe our approach in the submission to the temporal action proposal (task 3) and temporal action localization (task 4) of ActivityNet Challenge hosted at CVPR 2017. Since the accuracy in action classification task is already very high (nearly 90% in ActivityNet dataset), we believe that t...
computer science
28,750
Improved Bilinear Pooling with CNNs
cs.CV
Bilinear pooling of Convolutional Neural Network (CNN) features [22, 23], and their compact variants [10], have been shown to be effective at fine-grained recognition, scene categorization, texture recognition, and visual question-answering tasks among others. The resulting representation captures second-order statisti...
computer science
28,751
Neural Person Search Machines
cs.CV
We investigate the problem of person search in the wild in this work. Instead of comparing the query against all candidate regions generated in a query-blind manner, we propose to recursively shrink the search area from the whole image till achieving precise localization of the target person, by fully exploiting inform...
computer science
28,752
3DCNN-DQN-RNN: A Deep Reinforcement Learning Framework for Semantic Parsing of Large-scale 3D Point Clouds
cs.CV
Semantic parsing of large-scale 3D point clouds is an important research topic in computer vision and remote sensing fields. Most existing approaches utilize hand-crafted features for each modality independently and combine them in a heuristic manner. They often fail to consider the consistency and complementary inform...
computer science
28,753
Head Detection with Depth Images in the Wild
cs.CV
Head detection and localization is a demanding task and a key element for many computer vision applications, like video surveillance, Human Computer Interaction and face analysis. The stunning amount of work done for detecting faces on RGB images, together with the availability of huge face datasets, allowed to setup v...
computer science
28,754
Recurrent Neural Networks for Online Video Popularity Prediction
cs.CV
In this paper, we address the problem of popularity prediction of online videos shared in social media. We prove that this challenging task can be approached using recently proposed deep neural network architectures. We cast the popularity prediction problem as a classification task and we aim to solve it using only vi...
computer science
28,755
Text Recognition in Scene Image and Video Frame using Color Channel Selection
cs.CV
In recent years, recognition of text from natural scene image and video frame has got increased attention among the researchers due to its various complexities and challenges. Because of low resolution, blurring effect, complex background, different fonts, color and variant alignment of text within images and video fra...
computer science
28,756
Evaluation of Hashing Methods Performance on Binary Feature Descriptors
cs.CV
In this paper we evaluate performance of data-dependent hashing methods on binary data. The goal is to find a hashing method that can effectively produce lower dimensional binary representation of 512-bit FREAK descriptors. A representative sample of recent unsupervised, semi-supervised and supervised hashing methods w...
computer science
28,757
HMM-based Writer Identification in Music Score Documents without Staff-Line Removal
cs.CV
Writer identification from musical score documents is a challenging task due to its inherent problem of overlapping of musical symbols with staff lines. Most of the existing works in the literature of writer identification in musical score documents were performed after a preprocessing stage of staff lines removal. In ...
computer science
28,758
Date-Field Retrieval in Scene Image and Video Frames using Text Enhancement and Shape Coding
cs.CV
Text recognition in scene image and video frames is difficult because of low resolution, blur, background noise, etc. Since traditional OCRs do not perform well in such images, information retrieval using keywords could be an alternative way to index/retrieve such text information. Date is a useful piece of information...
computer science
28,759
Neuron Pruning for Compressing Deep Networks using Maxout Architectures
cs.CV
This paper presents an efficient and robust approach for reducing the size of deep neural networks by pruning entire neurons. It exploits maxout units for combining neurons into more complex convex functions and it makes use of a local relevance measurement that ranks neurons according to their activation on the traini...
computer science
28,760
Retinal Microaneurysms Detection using Local Convergence Index Features
cs.CV
Retinal microaneurysms are the earliest clinical sign of diabetic retinopathy disease. Detection of microaneurysms is crucial for the early diagnosis of diabetic retinopathy and prevention of blindness. In this paper, a novel and reliable method for automatic detection of microaneurysms in retinal images is proposed. I...
computer science
28,761
Semantic Image Synthesis via Adversarial Learning
cs.CV
In this paper, we propose a way of synthesizing realistic images directly with natural language description, which has many useful applications, e.g. intelligent image manipulation. We attempt to accomplish such synthesis: given a source image and a target text description, our model synthesizes images to meet two requ...
computer science
28,762
Learning Aerial Image Segmentation from Online Maps
cs.CV
This study deals with semantic segmentation of high-resolution (aerial) images where a semantic class label is assigned to each pixel via supervised classification as a basis for automatic map generation. Recently, deep convolutional neural networks (CNNs) have shown impressive performance and have quickly become the d...
computer science
28,763
What Looks Good with my Sofa: Multimodal Search Engine for Interior Design
cs.CV
In this paper, we propose a multi-modal search engine for interior design that combines visual and textual queries. The goal of our engine is to retrieve interior objects, e.g. furniture or wall clocks, that share visual and aesthetic similarities with the query. Our search engine allows the user to take a photo of a r...
computer science
28,764
A Multi-Scale CNN and Curriculum Learning Strategy for Mammogram Classification
cs.CV
Screening mammography is an important front-line tool for the early detection of breast cancer, and some 39 million exams are conducted each year in the United States alone. Here, we describe a multi-scale convolutional neural network (CNN) trained with a curriculum learning strategy that achieves high levels of accura...
computer science
28,765
Persistent-homology-based gait recognition
cs.CV
Gait recognition is an important biometric technique for video surveillance tasks, due to the advantage of using it at distance. In this paper, we present a persistent homology-based method to extract topological features (the so-called {\it topological gait signature}) from the the body silhouettes of a gait sequence....
computer science
28,766
Memory-Efficient Implementation of DenseNets
cs.CV
The DenseNet architecture is highly computationally efficient as a result of feature reuse. However, a naive DenseNet implementation can require a significant amount of GPU memory: If not properly managed, pre-activation batch normalization and contiguous convolution operations can produce feature maps that grow quadra...
computer science
28,767
Confidence estimation in Deep Neural networks via density modelling
cs.CV
State-of-the-art Deep Neural Networks can be easily fooled into providing incorrect high-confidence predictions for images with small amounts of adversarial noise. Does this expose a flaw with deep neural networks, or do we simply need a better way to estimate confidence? In this paper we consider the problem of accura...
computer science
28,768
What-and-Where to Match: Deep Spatially Multiplicative Integration Networks for Person Re-identification
cs.CV
Matching pedestrians across disjoint camera views, known as person re-identification (re-id), is a challenging problem that is of importance to visual recognition and surveillance. Most existing methods exploit local regions within spatial manipulation to perform matching in local correspondence. However, they essentia...
computer science
28,769
Motion Compensated Dynamic MRI Reconstruction with Local Affine Optical Flow Estimation
cs.CV
This paper proposes a novel framework to reconstruct the dynamic magnetic resonance images (DMRI) with motion compensation (MC). Due to the inherent motion effects during DMRI acquisition, reconstruction of DMRI using motion estimation/compensation (ME/MC) has been studied under a compressed sensing (CS) scheme. In thi...
computer science
28,770
PatchShuffle Regularization
cs.CV
This paper focuses on regularizing the training of the convolutional neural network (CNN). We propose a new regularization approach named ``PatchShuffle`` that can be adopted in any classification-oriented CNN models. It is easy to implement: in each mini-batch, images or feature maps are randomly chosen to undergo a t...
computer science
28,771
Deep Networks for Compressed Image Sensing
cs.CV
The compressed sensing (CS) theory has been successfully applied to image compression in the past few years as most image signals are sparse in a certain domain. Several CS reconstruction models have been recently proposed and obtained superior performance. However, there still exist two important challenges within the...
computer science
28,772
Single Image Super-Resolution with Dilated Convolution based Multi-Scale Information Learning Inception Module
cs.CV
Traditional works have shown that patches in a natural image tend to redundantly recur many times inside the image, both within the same scale, as well as across different scales. Make full use of these multi-scale information can improve the image restoration performance. However, the current proposed deep learning ba...
computer science
28,773
Multi-Oriented Text Detection and Verification in Video Frames and Scene Images
cs.CV
In this paper, we bring forth a novel approach of video text detection using Fourier-Laplacian filtering in the frequency domain that includes a verification technique using Hidden Markov Model (HMM). The proposed approach deals with the text region appearing not only in horizontal or vertical directions, but also in a...
computer science
28,774
Coarse-to-Fine Lifted MAP Inference in Computer Vision
cs.CV
There is a vast body of theoretical research on lifted inference in probabilistic graphical models (PGMs). However, few demonstrations exist where lifting is applied in conjunction with top of the line applied algorithms. We pursue the applicability of lifted inference for computer vision (CV), with the insight that a ...
computer science
28,775
Comparing Apples and Oranges: Off-Road Pedestrian Detection on the NREC Agricultural Person-Detection Dataset
cs.CV
Person detection from vehicles has made rapid progress recently with the advent of multiple highquality datasets of urban and highway driving, yet no large-scale benchmark is available for the same problem in off-road or agricultural environments. Here we present the NREC Agricultural Person-Detection Dataset to spur r...
computer science
28,776
Emotion Recognition by Body Movement Representation on the Manifold of Symmetric Positive Definite Matrices
cs.CV
Emotion recognition is attracting great interest for its potential application in a multitude of real-life situations. Much of the Computer Vision research in this field has focused on relating emotions to facial expressions, with investigations rarely including more than upper body. In this work, we propose a new scen...
computer science
28,777
A survey of exemplar-based texture synthesis
cs.CV
Exemplar-based texture synthesis is the process of generating, from an input sample, new texture images of arbitrary size and which are perceptually equivalent to the sample. The two main approaches are statistics-based methods and patch re-arrangement methods. In the first class, a texture is characterized by a statis...
computer science
28,778
Eyemotion: Classifying facial expressions in VR using eye-tracking cameras
cs.CV
One of the main challenges of social interaction in virtual reality settings is that head-mounted displays occlude a large portion of the face, blocking facial expressions and thereby restricting social engagement cues among users. Hence, auxiliary means of sensing and conveying these expressions are needed. We present...
computer science
28,779
Spatio-temporal Human Action Localisation and Instance Segmentation in Temporally Untrimmed Videos
cs.CV
Current state-of-the-art human action recognition is focused on the classification of temporally trimmed videos in which only one action occurs per frame. In this work we address the problem of action localisation and instance segmentation in which multiple concurrent actions of the same class may be segmented out of a...
computer science
28,780
SAR Image Colorization: Converting Single-Polarization to Fully Polarimetric Using Deep Neural Networks
cs.CV
A deep neural networks based method is proposed to convert single polarization grayscale SAR image to fully polarimetric. It consists of two components: a feature extractor network to extract hierarchical multi-scale spatial features of grayscale SAR image, followed by a feature translator network to map spatial featur...
computer science
28,781
Towards Good Practices for Deep 3D Hand Pose Estimation
cs.CV
3D hand pose estimation from single depth image is an important and challenging problem for human-computer interaction. Recently deep convolutional networks (ConvNet) with sophisticated design have been employed to address it, but the improvement over traditional random forest based methods is not so apparent. To explo...
computer science
28,782
Detecting and Grouping Identical Objects for Region Proposal and Classification
cs.CV
Often multiple instances of an object occur in the same scene, for example in a warehouse. Unsupervised multi-instance object discovery algorithms are able to detect and identify such objects. We use such an algorithm to provide object proposals to a convolutional neural network (CNN) based classifier. This results in ...
computer science
28,783
Deeply-Learned Part-Aligned Representations for Person Re-Identification
cs.CV
In this paper, we address the problem of person re-identification, which refers to associating the persons captured from different cameras. We propose a simple yet effective human part-aligned representation for handling the body part misalignment problem. Our approach decomposes the human body into regions (parts) whi...
computer science
28,784
Deep Optical Flow Estimation Via Multi-Scale Correspondence Structure Learning
cs.CV
As an important and challenging problem in computer vision, learning based optical flow estimation aims to discover the intrinsic correspondence structure between two adjacent video frames through statistical learning. Therefore, a key issue to solve in this area is how to effectively model the multi-scale corresponden...
computer science
28,785
Exploiting Deep Features for Remote Sensing Image Retrieval: A Systematic Investigation
cs.CV
Remote sensing (RS) image retrieval based on visual content is of great significance for geological information mining. Over the past two decades, a large amount of research on this task has been carried out, which mainly focuses on the following three core issues of image retrieval: visual feature, similarity metric a...
computer science
28,786
Person Re-identification Using Visual Attention
cs.CV
Despite recent attempts for solving the person re-identification problem, it remains a challenging task since a person's appearance can vary significantly when large variations in view angle, human pose and illumination are involved. The concept of attention is one of the most interesting recent architectural innovatio...
computer science
28,787
Compact Model Representation for 3D Reconstruction
cs.CV
3D reconstruction from 2D images is a central problem in computer vision. Recent works have been focusing on reconstruction directly from a single image. It is well known however that only one image cannot provide enough information for such a reconstruction. A prior knowledge that has been entertained are 3D CAD model...
computer science
28,788
Group-wise Deep Co-saliency Detection
cs.CV
In this paper, we propose an end-to-end group-wise deep co-saliency detection approach to address the co-salient object discovery problem based on the fully convolutional network (FCN) with group input and group output. The proposed approach captures the group-wise interaction information for group images by learning a...
computer science
28,789
Contrastive-center loss for deep neural networks
cs.CV
The deep convolutional neural network(CNN) has significantly raised the performance of image classification and face recognition. Softmax is usually used as supervision, but it only penalizes the classification loss. In this paper, we propose a novel auxiliary supervision signal called contrastivecenter loss, which can...
computer science
28,790
Synthesizing Robust Adversarial Examples
cs.CV
Neural network-based classifiers parallel or exceed human-level accuracy on many common tasks and are used in practical systems. Yet, neural networks are susceptible to adversarial examples, carefully perturbed inputs that cause networks to misbehave in arbitrarily chosen ways. When generated with standard methods, the...
computer science
28,791
Toward Geometric Deep SLAM
cs.CV
We present a point tracking system powered by two deep convolutional neural networks. The first network, MagicPoint, operates on single images and extracts salient 2D points. The extracted points are "SLAM-ready" because they are by design isolated and well-distributed throughout the image. We compare this network agai...
computer science
28,792
Traffic scene recognition based on deep cnn and vlad spatial pyramids
cs.CV
Traffic scene recognition is an important and challenging issue in Intelligent Transportation Systems (ITS). Recently, Convolutional Neural Network (CNN) models have achieved great success in many applications, including scene classification. The remarkable representational learning capability of CNN remains to be furt...
computer science
28,793
Generative OpenMax for Multi-Class Open Set Classification
cs.CV
We present a conceptually new and flexible method for multi-class open set classification. Unlike previous methods where unknown classes are inferred with respect to the feature or decision distance to the known classes, our approach is able to provide explicit modelling and decision score for unknown classes. The prop...
computer science
28,794
LV-ROVER: Lexicon Verified Recognizer Output Voting Error Reduction
cs.CV
Offline handwritten text line recognition is a hard task that requires both an efficient optical character recognizer and language model. Handwriting recognition state of the art methods are based on Long Short Term Memory (LSTM) recurrent neural networks (RNN) coupled with the use of linguistic knowledge. Most of the ...
computer science
28,795
Delineation of line patterns in images using B-COSFIRE filters
cs.CV
Delineation of line patterns in images is a basic step required in various applications such as blood vessel detection in medical images, segmentation of rivers or roads in aerial images, detection of cracks in walls or pavements, etc. In this paper we present trainable B-COSFIRE filters, which are a model of some neur...
computer science
28,796
Infinite Latent Feature Selection: A Probabilistic Latent Graph-Based Ranking Approach
cs.CV
Feature selection is playing an increasingly significant role with respect to many computer vision applications spanning from object recognition to visual object tracking. However, most of the recent solutions in feature selection are not robust across different and heterogeneous set of data. In this paper, we address ...
computer science
28,797
Towards Accurate Markerless Human Shape and Pose Estimation over Time
cs.CV
Existing marker-less motion capture methods often assume known backgrounds, static cameras, and sequence specific motion priors, which narrows its application scenarios. Here we propose a fully automatic method that given multi-view video, estimates 3D human motion and body shape. We take recent SMPLify \cite{bogo2016k...
computer science
28,798
Joint Background Reconstruction and Foreground Segmentation via A Two-stage Convolutional Neural Network
cs.CV
Foreground segmentation in video sequences is a classic topic in computer vision. Due to the lack of semantic and prior knowledge, it is difficult for existing methods to deal with sophisticated scenes well. Therefore, in this paper, we propose an end-to-end two-stage deep convolutional neural network (CNN) framework f...
computer science
28,799
Vision-Based Fallen Person Detection for the Elderly
cs.CV
Falls are serious and costly for elderly people. The Centers for Disease Control and Prevention of the US reports that millions of older people, 65 and older, fall each year at least once. Serious injuries such as; hip fractures, broken bones or head injury, are caused by 20% of the falls. The time it takes to respond ...
computer science
28,800
Liver lesion segmentation informed by joint liver segmentation
cs.CV
We propose a model for the joint segmentation of the liver and liver lesions in computed tomography (CT) volumes. We build the model from two fully convolutional networks, connected in tandem and trained together end-to-end. We evaluate our approach on the 2017 MICCAI Liver Tumour Segmentation Challenge, attaining comp...
computer science
28,801
Detection of curved lines with B-COSFIRE filters: A case study on crack delineation
cs.CV
The detection of curvilinear structures is an important step for various computer vision applications, ranging from medical image analysis for segmentation of blood vessels, to remote sensing for the identification of roads and rivers, and to biometrics and robotics, among others. %The visual system of the brain has re...
computer science