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29,902
Towards Effective Low-bitwidth Convolutional Neural Networks
cs.CV
This paper tackles the problem of training a deep convolutional neural network with both low-precision weights and low-bitwidth activations. Optimizing a low-precision network is very challenging since the training process can easily get trapped in a poor local minima, which results in substantial accuracy loss. To mit...
computer science
29,903
3D-SSD: Learning Hierarchical Features from RGB-D Images for Amodal 3D Object Detection
cs.CV
This paper aims at developing a faster and a more accurate solution to the amodal 3D object detection problem for indoor scenes. It is achieved through a novel neural network that takes a pair of RGB-D images as the input and delivers oriented 3D bounding boxes as the output. The network, named 3D-SSD, composed of two ...
computer science
29,904
Adversarial Learning of Structure-Aware Fully Convolutional Networks for Landmark Localization
cs.CV
Landmark/pose estimation in single monocular images have received much effort in computer vision due to its important applications. It remains a challenging task when input images severe occlusions caused by, e.g., adverse camera views. Under such circumstances, biologically implausible pose predictions may be produced...
computer science
29,905
Multi-View Data Generation Without View Supervision
cs.CV
The development of high-dimensional generative models has recently gained a great surge of interest with the introduction of variational auto-encoders and generative adversarial neural networks. Different variants have been proposed where the underlying latent space is structured, for example, based on attributes descr...
computer science
29,906
Robust Saliency Detection via Fusing Foreground and Background Priors
cs.CV
Automatic Salient object detection has received tremendous attention from research community and has been an increasingly important tool in many computer vision tasks. This paper proposes a novel bottom-up salient object detection framework which considers both foreground and background cues. First, A series of backgro...
computer science
29,907
Automatic calcium scoring in low-dose chest CT using deep neural networks with dilated convolutions
cs.CV
Heavy smokers undergoing screening with low-dose chest CT are affected by cardiovascular disease as much as by lung cancer. Low-dose chest CT scans acquired in screening enable quantification of atherosclerotic calcifications and thus enable identification of subjects at increased cardiovascular risk. This paper presen...
computer science
29,908
Complex-valued image denosing based on group-wise complex-domain sparsity
cs.CV
Phase imaging and wavefront reconstruction from noisy observations of complex exponent is a topic of this paper. It is a highly non-linear problem because the exponent is a 2{\pi}-periodic function of phase. The reconstruction of phase and amplitude is difficult. Even with an additive Gaussian noise in observations dis...
computer science
29,909
Data, Depth, and Design: Learning Reliable Models for Melanoma Screening
cs.CV
State of the art on melanoma screening evolved rapidly in the last two years, with the adoption of deep learning. Those models, however, pose challenges of their own, as they are expensive to train and difficult to parameterize. Objective: We investigate the methodological issues for designing and evaluating deep learn...
computer science
29,910
Almost instant brain atlas segmentation for large-scale studies
cs.CV
Large scale studies of group differences in healthy controls and patients and screenings for early stage disease prevention programs require processing and analysis of extensive multisubject datasets. Complexity of the task increases even further when segmenting structural MRI of the brain into an atlas with more than ...
computer science
29,911
Widening siamese architectures for stereo matching
cs.CV
Computational stereo is one of the classical problems in computer vision. Numerous algorithms and solutions have been reported in recent years focusing on developing methods for computing similarity, aggregating it to obtain spatial support and finally optimizing an energy function to find the final disparity. In this ...
computer science
29,912
Random Subspace Two-dimensional LDA for Face Recognition
cs.CV
In this paper, a novel technique named random subspace two-dimensional LDA (RS-2DLDA) is developed for face recognition. This approach offers a number of improvements over the random subspace two-dimensional PCA (RS2DPCA) framework introduced by Nguyen et al. [5]. Firstly, the eigenvectors from 2DLDA have more discrimi...
computer science
29,913
Deep Learning from Noisy Image Labels with Quality Embedding
cs.CV
There is an emerging trend to leverage noisy image datasets in many visual recognition tasks. However, the label noise among the datasets severely degenerates the \mbox{performance of deep} learning approaches. Recently, one mainstream is to introduce the latent label to handle label noise, which has shown promising im...
computer science
29,914
A Bio-Inspired Multi-Exposure Fusion Framework for Low-light Image Enhancement
cs.CV
Low-light images are not conducive to human observation and computer vision algorithms due to their low visibility. Although many image enhancement techniques have been proposed to solve this problem, existing methods inevitably introduce contrast under- and over-enhancement. Inspired by human visual system, we design ...
computer science
29,915
Data Augmentation in Emotion Classification Using Generative Adversarial Networks
cs.CV
It is a difficult task to classify images with multiple class labels using only a small number of labeled examples, especially when the label (class) distribution is imbalanced. Emotion classification is such an example of imbalanced label distribution, because some classes of emotions like \emph{disgusted} are relativ...
computer science
29,916
Development and validation of a novel dementia of Alzheimer's type (DAT) score based on metabolism FDG-PET imaging
cs.CV
Fluorodeoxyglucose positron emission tomography (FDG-PET) imaging based 3D topographic brain glucose metabolism patterns from normal controls (NC) and individuals with dementia of Alzheimer's type (DAT) are used to train a novel multi-scale ensemble classification model. This ensemble model outputs a FDG-PET DAT score ...
computer science
29,917
Understanding and Predicting The Attractiveness of Human Action Shot
cs.CV
Selecting attractive photos from a human action shot sequence is quite challenging, because of the subjective nature of the "attractiveness", which is mainly a combined factor of human pose in action and the background. Prior works have actively studied high-level image attributes including interestingness, memorabilit...
computer science
29,918
Statistical evaluation of visual quality metrics for image denoising
cs.CV
This paper studies the problem of full reference visual quality assessment of denoised images with a special emphasis on images with low contrast and noise-like texture. Denoising of such images together with noise removal often results in image details loss or smoothing. A new test image database, FLT, containing 75 n...
computer science
29,919
The Achievement of Higher Flexibility in Multiple Choice-based Tests Using Image Classification Techniques
cs.CV
In spite of the high accuracy of the existing optical mark reading (OMR) systems and devices, a few restrictions remain existent. In this work, we aim to reduce the restrictions of multiple choice questions (MCQ) within tests. We use an image registration technique to extract the answer boxes from the answer sheets. Un...
computer science
29,920
AxonDeepSeg: automatic axon and myelin segmentation from microscopy data using convolutional neural networks
cs.CV
Segmentation of axon and myelin from microscopy images of the nervous system provides useful quantitative information about the tissue microstructure, such as axon density and myelin thickness. This could be used for instance to document cell morphometry across species, or to validate novel non-invasive quantitative ma...
computer science
29,921
In-Bed Pose Estimation: Deep Learning with Shallow Dataset
cs.CV
Although human pose estimation for various computer vision (CV) applications has been studied extensively in the last few decades, yet in-bed pose estimation using camera-based vision methods has been ignored by the CV community because it is assumed to be identical to the general purpose pose estimation methods. Howev...
computer science
29,922
A Taught-Obesrve-Ask (TOA) Method for Object Detection with Critical Supervision
cs.CV
Being inspired by child's learning experience - taught first and followed by observation and questioning, we investigate a critically supervised learning methodology for object detection in this work. Specifically, we propose a taught-observe-ask (TOA) method that consists of several novel components such as negative o...
computer science
29,923
Multi-Glimpse LSTM with Color-Depth Feature Fusion for Human Detection
cs.CV
With the development of depth cameras such as Kinect and Intel Realsense, RGB-D based human detection receives continuous research attention due to its usage in a variety of applications. In this paper, we propose a new Multi-Glimpse LSTM (MG-LSTM) network, in which multi-scale contextual information is sequentially in...
computer science
29,924
Ω-Net (Omega-Net): Fully Automatic, Multi-View Cardiac MR Detection, Orientation, and Segmentation with Deep Neural Networks
cs.CV
Pixelwise segmentation of the left ventricular (LV) myocardium and the four cardiac chambers in 2-D steady state free precession (SSFP) cine sequences is an essential preprocessing step for a wide range of analyses. Variability in contrast, appearance, orientation, and placement of the heart between patients, clinical ...
computer science
29,925
Motion Artifact Detection in Confocal Laser Endomicroscopy Images
cs.CV
Confocal Laser Endomicroscopy (CLE), an optical imaging technique allowing non-invasive examination of the mucosa on a (sub)cellular level, has proven to be a valuable diagnostic tool in gastroenterology and shows promising results in various anatomical regions including the oral cavity. Recently, the feasibility of au...
computer science
29,926
End-to-end Flow Correlation Tracking with Spatial-temporal Attention
cs.CV
Discriminative correlation filters (DCF) with deep convolutional features have achieved favorable performance in recent tracking benchmarks. However, most of existing DCF trackers only consider appearance features of current frame, and hardly benefit from motion and inter-frame information. The lack of temporal informa...
computer science
29,927
Distributed Unmixing of Hyperspectral Data With Sparsity Constraint
cs.CV
Spectral unmixing (SU) is a data processing problem in hyperspectral remote sensing. The significant challenge in the SU problem is how to identify endmembers and their weights, accurately. For estimation of signature and fractional abundance matrices in a blind problem, nonnegative matrix factorization (NMF) and its d...
computer science
29,928
Computationally efficient cardiac views projection using 3D Convolutional Neural Networks
cs.CV
4D Flow is an MRI sequence which allows acquisition of 3D images of the heart. The data is typically acquired volumetrically, so it must be reformatted to generate cardiac long axis and short axis views for diagnostic interpretation. These views may be generated by placing 6 landmarks: the left and right ventricle apex...
computer science
29,929
An Iterative Co-Saliency Framework for RGBD Images
cs.CV
As a newly emerging and significant topic in computer vision community, co-saliency detection aims at discovering the common salient objects in multiple related images. The existing methods often generate the co-saliency map through a direct forward pipeline which is based on the designed cues or initialization, but la...
computer science
29,930
DDD17: End-To-End DAVIS Driving Dataset
cs.CV
Event cameras, such as dynamic vision sensors (DVS), and dynamic and active-pixel vision sensors (DAVIS) can supplement other autonomous driving sensors by providing a concurrent stream of standard active pixel sensor (APS) images and DVS temporal contrast events. The APS stream is a sequence of standard grayscale glob...
computer science
29,931
Attentional Pooling for Action Recognition
cs.CV
We introduce a simple yet surprisingly powerful model to incorporate attention in action recognition and human object interaction tasks. Our proposed attention module can be trained with or without extra supervision, and gives a sizable boost in accuracy while keeping the network size and computational cost nearly the ...
computer science
29,932
Object-Centric Photometric Bundle Adjustment with Deep Shape Prior
cs.CV
Reconstructing 3D shapes from a sequence of images has long been a problem of interest in computer vision. Classical Structure from Motion (SfM) methods have attempted to solve this problem through projected point displacement \& bundle adjustment. More recently, deep methods have attempted to solve this problem by dir...
computer science
29,933
Towards Automatic 3D Shape Instantiation for Deployed Stent Grafts: 2D Multiple-class and Class-imbalance Marker Segmentation with Equally-weighted Focal U-Net
cs.CV
Robot-assisted Fenestrated Endovascular Aortic Repair (FEVAR) is currently navigated by 2D fluoroscopy which is insufficiently informative. Previously, a semi-automatic 3D shape instantiation method was developed to instantiate the 3D shape of a main, deployed, and fenestrated stent graft from a single fluoroscopy proj...
computer science
29,934
Registration and Fusion of Multi-Spectral Images Using a Novel Edge Descriptor
cs.CV
In this paper we introduce a fully end-to-end approach for multi-spectral image registration and fusion. Our method for fusion combines images from different spectral channels into a single fused image by different approaches for low and high frequency signals. A prerequisite of fusion is a stage of geometric alignment...
computer science
29,935
The Local Dimension of Deep Manifold
cs.CV
Based on our observation that there exists a dramatic drop for the singular values of the fully connected layers or a single feature map of the convolutional layer, and that the dimension of the concatenated feature vector almost equals the summation of the dimension on each feature map, we propose a singular value dec...
computer science
29,936
Adversarial Dropout Regularization
cs.CV
We present a method for transferring neural representations from label-rich source domains to unlabeled target domains. Recent adversarial methods proposed for this task learn to align features across domains by fooling a special domain critic network. However, a drawback of this approach is that the critic simply labe...
computer science
29,937
Simultaneous Joint and Object Trajectory Templates for Human Activity Recognition from 3-D Data
cs.CV
The availability of low-cost range sensors and the development of relatively robust algorithms for the extraction of skeleton joint locations have inspired many researchers to develop human activity recognition methods using the 3-D data. In this paper, an effective method for the recognition of human activities from t...
computer science
29,938
Spatial Pyramid Context-Aware Moving Object Detection and Tracking for Full Motion Video and Wide Aerial Motion Imagery
cs.CV
A robust and fast automatic moving object detection and tracking system is essential to characterize target object and extract spatial and temporal information for different functionalities including video surveillance systems, urban traffic monitoring and navigation, robotic. In this dissertation, I present a collabor...
computer science
29,939
End-to-End Video Classification with Knowledge Graphs
cs.CV
Video understanding has attracted much research attention especially since the recent availability of large-scale video benchmarks. In this paper, we address the problem of multi-label video classification. We first observe that there exists a significant knowledge gap between how machines and humans learn. That is, wh...
computer science
29,940
Active Learning for Visual Question Answering: An Empirical Study
cs.CV
We present an empirical study of active learning for Visual Question Answering, where a deep VQA model selects informative question-image pairs from a pool and queries an oracle for answers to maximally improve its performance under a limited query budget. Drawing analogies from human learning, we explore cramming (ent...
computer science
29,941
HyperNetworks with statistical filtering for defending adversarial examples
cs.CV
Deep learning algorithms have been known to be vulnerable to adversarial perturbations in various tasks such as image classification. This problem was addressed by employing several defense methods for detection and rejection of particular types of attacks. However, training and manipulating networks according to parti...
computer science
29,942
PersonRank: Detecting Important People in Images
cs.CV
Always, some individuals in images are more important/attractive than others in some events such as presentation, basketball game or speech. However, it is challenging to find important people among all individuals in images directly based on their spatial or appearance information due to the existence of diverse varia...
computer science
29,943
Mitigating Adversarial Effects Through Randomization
cs.CV
Convolutional neural networks have demonstrated high accuracy on various tasks in recent years. However, they are extremely vulnerable to adversarial examples. For example, imperceptible perturbations added to clean images can cause convolutional neural networks to fail. In this paper, we propose to utilize randomizati...
computer science
29,944
Artificial Generation of Big Data for Improving Image Classification: A Generative Adversarial Network Approach on SAR Data
cs.CV
Very High Spatial Resolution (VHSR) large-scale SAR image databases are still an unresolved issue in the Remote Sensing field. In this work, we propose such a dataset and use it to explore patch-based classification in urban and periurban areas, considering 7 distinct semantic classes. In this context, we investigate t...
computer science
29,945
A Joint 3D-2D based Method for Free Space Detection on Roads
cs.CV
In this paper, we address the problem of road segmentation and free space detection in the context of autonomous driving. Traditional methods either use 3-dimensional (3D) cues such as point clouds obtained from LIDAR, RADAR or stereo cameras or 2-dimensional (2D) cues such as lane markings, road boundaries and object ...
computer science
29,946
Image Segmentation of Multi-Shaped Overlapping Objects
cs.CV
In this work, we propose a new segmentation algorithm for images containing convex objects present in multiple shapes with a high degree of overlap. The proposed algorithm is carried out in two steps, first we identify the visible contours, segment them using concave points and finally group the segments belonging to t...
computer science
29,947
Challenges in Disentangling Independent Factors of Variation
cs.CV
We study the problem of building models that disentangle independent factors of variation. Such models could be used to encode features that can efficiently be used for classification and to transfer attributes between different images in image synthesis. As data we use a weakly labeled training set. Our weak labels in...
computer science
29,948
Doppler-Radar Based Hand Gesture Recognition System Using Convolutional Neural Networks
cs.CV
Hand gesture recognition has long been a hot topic in human computer interaction. Traditional camera-based hand gesture recognition systems cannot work properly under dark circumstances. In this paper, a Doppler Radar based hand gesture recognition system using convolutional neural networks is proposed. A cost-effectiv...
computer science
29,949
GradNorm: Gradient Normalization for Adaptive Loss Balancing in Deep Multitask Networks
cs.CV
Deep multitask networks, in which one neural network produces multiple predictive outputs, are more scalable and often better regularized than their single-task counterparts. Such advantages can potentially lead to gains in both speed and performance, but multitask networks are also difficult to train without finding t...
computer science
29,950
Can Maxout Units Downsize Restoration Networks? - Single Image Super-Resolution Using Lightweight CNN with Maxout Units
cs.CV
Rectified linear units (ReLU) are well-known to be helpful in obtaining faster convergence and thus higher performance for many deep-learning-based applications. However, networks with ReLU tend to perform poorly when the number of filter parameters is constrained to a small number. To overcome it, in this paper, we pr...
computer science
29,951
An EEG-based Image Annotation System
cs.CV
The success of deep learning in computer vision has greatly increased the need for annotated image datasets. We propose an EEG (Electroencephalogram)-based image annotation system. While humans can recognize objects in 20-200 milliseconds, the need to manually label images results in a low annotation throughput. Our sy...
computer science
29,952
Unconstrained Scene Text and Video Text Recognition for Arabic Script
cs.CV
Building robust recognizers for Arabic has always been challenging. We demonstrate the effectiveness of an end-to-end trainable CNN-RNN hybrid architecture in recognizing Arabic text in videos and natural scenes. We outperform previous state-of-the-art on two publicly available video text datasets - ALIF and ACTIV. For...
computer science
29,953
MSR-net:Low-light Image Enhancement Using Deep Convolutional Network
cs.CV
Images captured in low-light conditions usually suffer from very low contrast, which increases the difficulty of subsequent computer vision tasks in a great extent. In this paper, a low-light image enhancement model based on convolutional neural network and Retinex theory is proposed. Firstly, we show that multi-scale ...
computer science
29,954
Fine-tuning CNN Image Retrieval with No Human Annotation
cs.CV
Image descriptors based on activations of Convolutional Neural Networks (CNNs) have become dominant in image retrieval due to their discriminative power, compactness of the representation, and the efficiency of search. Training of CNNs, either from scratch or fine-tuning, requires a large amount of annotated data, wher...
computer science
29,955
Few-Shot Adversarial Domain Adaptation
cs.CV
This work provides a framework for addressing the problem of supervised domain adaptation with deep models. The main idea is to exploit adversarial learning to learn an embedded subspace that simultaneously maximizes the confusion between two domains while semantically aligning their embedding. The supervised setting b...
computer science
29,956
Remote Sensing Image Fusion Based on Two-stream Fusion Network
cs.CV
Remote sensing image fusion (also known as pan-sharpening) aims at generating high resolution multi-spectral (MS) image from inputs of a high spatial resolution single band panchromatic (PAN) image and a low spatial resolution multi-spectral image. Inspired by the astounding achievements of convolutional neural network...
computer science
29,957
Image Captioning and Classification of Dangerous Situations
cs.CV
Current robot platforms are being employed to collaborate with humans in a wide range of domestic and industrial tasks. These environments require autonomous systems that are able to classify and communicate anomalous situations such as fires, injured persons, car accidents; or generally, any potentially dangerous situ...
computer science
29,958
Compression-aware Training of Deep Networks
cs.CV
In recent years, great progress has been made in a variety of application domains thanks to the development of increasingly deeper neural networks. Unfortunately, the huge number of units of these networks makes them expensive both computationally and memory-wise. To overcome this, exploiting the fact that deep network...
computer science
29,959
Latent hypernet: Exploring all Layers from Convolutional Neural Networks
cs.CV
Since Convolutional Neural Networks (ConvNets) are able to simultaneously learn features and classifiers to discriminate different categories of activities, recent works have employed ConvNets approaches to perform human activity recognition (HAR) based on wearable sensors, allowing the removal of expensive human work ...
computer science
29,960
Curve-Structure Segmentation from Depth Maps: A CNN-based Approach and Its Application to Exploring Cultural Heritage Objects
cs.CV
Motivated by the important archaeological application of exploring cultural heritage objects, in this paper we study the challenging problem of automatically segmenting curve structures that are very weakly stamped or carved on an object surface in the form of a highly noisy depth map. Different from most classical low...
computer science
29,961
A New Hybrid-parameter Recurrent Neural Networks for Online Handwritten Chinese Character Recognition
cs.CV
The recurrent neural network (RNN) is appropriate for dealing with temporal sequences. In this paper, we present a deep RNN with new features and apply it for online handwritten Chinese character recognition. Compared with the existing RNN models, three innovations are involved in the proposed system. First, a new hidd...
computer science
29,962
Multi-label Image Recognition by Recurrently Discovering Attentional Regions
cs.CV
This paper proposes a novel deep architecture to address multi-label image recognition, a fundamental and practical task towards general visual understanding. Current solutions for this task usually rely on an extra step of extracting hypothesis regions (i.e., region proposals), resulting in redundant computation and s...
computer science
29,963
Heuristic Search for Structural Constraints in Data Association
cs.CV
The research on multi-object tracking (MOT) is essentially to solve for the data association assignment, the core of which is to design the association cost as discriminative as possible. Generally speaking, the match ambiguities caused by similar appearances of objects and the moving cameras make the data association ...
computer science
29,964
Transductive Zero-Shot Hashing via Coarse-to-Fine Similarity Mining
cs.CV
Zero-shot Hashing (ZSH) is to learn hashing models for novel/target classes without training data, which is an important and challenging problem. Most existing ZSH approaches exploit transfer learning via an intermediate shared semantic representations between the seen/source classes and novel/target classes. However, ...
computer science
29,965
Offline signature authenticity verification through unambiguously connected skeleton segments
cs.CV
A method for offline signature verification is presented in this paper. It is based on the segmentation of the signature skeleton (through standard image skeletonization) into unambiguous sequences of points, or unambiguously connected skeleton segments corresponding to vectorial representations of signature portions. ...
computer science
29,966
Curve Reconstruction via the Global Statistics of Natural Curves
cs.CV
Reconstructing the missing parts of a curve has been the subject of much computational research, with applications in image inpainting, object synthesis, etc. Different approaches for solving that problem are typically based on processes that seek visually pleasing or perceptually plausible completions. In this work we...
computer science
29,967
Multi-stage Suture Detection for Robot Assisted Anastomosis based on Deep Learning
cs.CV
In robotic surgery, task automation and learning from demonstration combined with human supervision is an emerging trend for many new surgical robot platforms. One such task is automated anastomosis, which requires bimanual needle handling and suture detection. Due to the complexity of the surgical environment and vary...
computer science
29,968
CyCADA: Cycle-Consistent Adversarial Domain Adaptation
cs.CV
Domain adaptation is critical for success in new, unseen environments. Adversarial adaptation models applied in feature spaces discover domain invariant representations, but are difficult to visualize and sometimes fail to capture pixel-level and low-level domain shifts. Recent work has shown that generative adversaria...
computer science
29,969
Fingerprint Orientation Refinement through Iterative Smoothing
cs.CV
We propose a new gradient-based method for the extraction of the orientation field associated to a fingerprint, and a regularisation procedure to improve the orientation field computed from noisy fingerprint images. The regularisation algorithm is based on three new integral operators, introduced and discussed in this ...
computer science
29,970
Predicting Scene Parsing and Motion Dynamics in the Future
cs.CV
The ability of predicting the future is important for intelligent systems, e.g. autonomous vehicles and robots to plan early and make decisions accordingly. Future scene parsing and optical flow estimation are two key tasks that help agents better understand their environments as the former provides dense semantic info...
computer science
29,971
Two-stream Collaborative Learning with Spatial-Temporal Attention for Video Classification
cs.CV
Video classification is highly important with wide applications, such as video search and intelligent surveillance. Video naturally consists of static and motion information, which can be represented by frame and optical flow. Recently, researchers generally adopt the deep networks to capture the static and motion info...
computer science
29,972
Feed Forward and Backward Run in Deep Convolution Neural Network
cs.CV
Convolution Neural Networks (CNN), known as ConvNets are widely used in many visual imagery application, object classification, speech recognition. After the implementation and demonstration of the deep convolution neural network in Imagenet classification in 2012 by krizhevsky, the architecture of deep Convolution Neu...
computer science
29,973
Fast camera focus estimation for gaze-based focus control
cs.CV
Many cameras implement auto-focus functionality. However, they typically require the user to manually identify the location to be focused on. While such an approach works for temporally-sparse autofocusing functionality (e.g., photo shooting), it presents extreme usability problems when the focus must be quickly switch...
computer science
29,974
Frangi-Net: A Neural Network Approach to Vessel Segmentation
cs.CV
In this paper, we reformulate the conventional 2-D Frangi vesselness measure into a pre-weighted neural network ("Frangi-Net"), and illustrate that the Frangi-Net is equivalent to the original Frangi filter. Furthermore, we show that, as a neural network, Frangi-Net is trainable. We evaluate the proposed method on a se...
computer science
29,975
One-pass Person Re-identification by Sketch Online Discriminant Analysis
cs.CV
Person re-identification (re-id) is to match people across disjoint camera views in a multi-camera system, and re-id has been an important technology applied in smart city in recent years. However, the majority of existing person re-id methods are not designed for processing sequential data in an online way. This ignor...
computer science
29,976
Making a long story short: A Multi-Importance fast-forwarding egocentric videos with the emphasis on relevant objects
cs.CV
The emergence of low-cost high-quality personal wearable cameras combined with the increasing storage capacity of video-sharing websites have evoked a growing interest in first-person videos, since most videos are composed of long-running unedited streams which are usually tedious and unpleasant to watch. State-of-the-...
computer science
29,977
Toward Depth Estimation Using Mask-Based Lensless Cameras
cs.CV
Recently, coded masks have been used to demonstrate a thin form-factor lensless camera, FlatCam, in which a mask is placed immediately on top of a bare image sensor. In this paper, we present an imaging model and algorithm to jointly estimate depth and intensity information in the scene from a single or multiple FlatCa...
computer science
29,978
Exploiting ConvNet Diversity for Flooding Identification
cs.CV
Flooding is the world's most costly type of natural disaster in terms of both economic losses and human causalities. A first and essential procedure towards flood monitoring is based on identifying the area most vulnerable to flooding, which gives authorities relevant regions to focus. In this work, we propose several ...
computer science
29,979
Unsupervised Learning of Geometry with Edge-aware Depth-Normal Consistency
cs.CV
Learning to reconstruct depths in a single image by watching unlabeled videos via deep convolutional network (DCN) is attracting significant attention in recent years. In this paper, we introduce a surface normal representation for unsupervised depth estimation framework. Our estimated depths are constrained to be comp...
computer science
29,980
Egocentric Hand Detection Via Dynamic Region Growing
cs.CV
Egocentric videos, which mainly record the activities carried out by the users of the wearable cameras, have drawn much research attentions in recent years. Due to its lengthy content, a large number of ego-related applications have been developed to abstract the captured videos. As the users are accustomed to interact...
computer science
29,981
A Fully Convolutional Tri-branch Network (FCTN) for Domain Adaptation
cs.CV
A domain adaptation method for urban scene segmentation is proposed in this work. We develop a fully convolutional tri-branch network, where two branches assign pseudo labels to images in the unlabeled target domain while the third branch is trained with supervision based on images in the pseudo-labeled target domain. ...
computer science
29,982
Material Classification in the Wild: Do Synthesized Training Data Generalise Better than Real-World Training Data?
cs.CV
We question the dominant role of real-world training images in the field of material classification by investigating whether synthesized data can generalise more effectively than real-world data. Experimental results on three challenging real-world material databases show that the best performing pre-trained convolutio...
computer science
29,983
Longitudinal Study of Child Face Recognition
cs.CV
We present a longitudinal study of face recognition performance on Children Longitudinal Face (CLF) dataset containing 3,682 face images of 919 subjects, in the age group [2, 18] years. Each subject has at least four face images acquired over a time span of up to six years. Face comparison scores are obtained from (i) ...
computer science
29,984
DeepKSPD: Learning Kernel-matrix-based SPD Representation for Fine-grained Image Recognition
cs.CV
Being symmetric positive-definite (SPD), covariance matrix has traditionally been used to represent a set of local descriptors in visual recognition. Recent study shows that kernel matrix can give considerably better representation by modelling the nonlinearity in the local descriptor set. Nevertheless, neither the des...
computer science
29,985
CT-SRCNN: Cascade Trained and Trimmed Deep Convolutional Neural Networks for Image Super Resolution
cs.CV
We propose methodologies to train highly accurate and efficient deep convolutional neural networks (CNNs) for image super resolution (SR). A cascade training approach to deep learning is proposed to improve the accuracy of the neural networks while gradually increasing the number of network layers. Next, we explore how...
computer science
29,986
Going Further with Point Pair Features
cs.CV
Point Pair Features is a widely used method to detect 3D objects in point clouds, however they are prone to fail in presence of sensor noise and background clutter. We introduce novel sampling and voting schemes that significantly reduces the influence of clutter and sensor noise. Our experiments show that with our imp...
computer science
29,987
Deep Residual Text Detection Network for Scene Text
cs.CV
Scene text detection is a challenging problem in computer vision. In this paper, we propose a novel text detection network based on prevalent object detection frameworks. In order to obtain stronger semantic feature, we adopt ResNet as feature extraction layers and exploit multi-level feature by combining hierarchical ...
computer science
29,988
End-to-end Video-level Representation Learning for Action Recognition
cs.CV
From the frame/clip-level feature learning to the video-level representation building, deep learning methods in action recognition have developed rapidly in recent years. However, current methods suffer from the confusion caused by partial observation training, or without end-to-end learning, or restricted to single te...
computer science
29,989
3D Randomized Connection Network with Graph-based Label Inference
cs.CV
In this paper, a novel 3D deep learning network is proposed for brain MR image segmentation with randomized connection, which can decrease the dependency between layers and increase the network capacity. The convolutional LSTM and 3D convolution are employed as network units to capture the long-term and short-term 3D p...
computer science
29,990
Latent Constrained Correlation Filter
cs.CV
Correlation filters are special classifiers designed for shift-invariant object recognition, which are robust to pattern distortions. The recent literature shows that combining a set of sub-filters trained based on a single or a small group of images obtains the best performance. The idea is equivalent to estimating va...
computer science
29,991
AON: Towards Arbitrarily-Oriented Text Recognition
cs.CV
Recognizing text from natural images is a hot research topic in computer vision due to its various applications. Despite the enduring research of several decades on optical character recognition (OCR), recognizing texts from natural images is still a challenging task. This is because scene texts are often in irregular ...
computer science
29,992
Robust Image Registration via Empirical Mode Decomposition
cs.CV
Spatially varying intensity noise is a common source of distortion in images. Bias field noise is one example of such distortion that is often present in the magnetic resonance (MR) images. In this paper, we first show that empirical mode decomposition (EMD) can considerably reduce the bias field noise in the MR images...
computer science
29,993
Feature Enhancement Network: A Refined Scene Text Detector
cs.CV
In this paper, we propose a refined scene text detector with a \textit{novel} Feature Enhancement Network (FEN) for Region Proposal and Text Detection Refinement. Retrospectively, both region proposal with \textit{only} $3\times 3$ sliding-window feature and text detection refinement with \textit{single scale} high lev...
computer science
29,994
Evaluation of trackers for Pan-Tilt-Zoom Scenarios
cs.CV
Tracking with a Pan-Tilt-Zoom (PTZ) camera has been a research topic in computer vision for many years. Compared to tracking with a still camera, the images captured with a PTZ camera are highly dynamic in nature because the camera can perform large motion resulting in quickly changing capture conditions. Furthermore, ...
computer science
29,995
Hand Gesture Recognition with Leap Motion
cs.CV
The recent introduction of depth cameras like Leap Motion Controller allows researchers to exploit the depth information to recognize hand gesture more robustly. This paper proposes a novel hand gesture recognition system with Leap Motion Controller. A series of features are extracted from Leap Motion tracking data, we...
computer science
29,996
Gender recognition and biometric identification using a large dataset of hand images
cs.CV
The human hand possesses distinctive features which can reveal gender information. In addition, the hand is considered one of the primary biometric traits used to identify a person. In this work, we propose a large dataset of human hand images with detailed ground-truth information for gender recognition and biometric ...
computer science
29,997
Crowd counting via scale-adaptive convolutional neural network
cs.CV
The task of crowd counting is to automatically estimate the pedestrian number in crowd images. To cope with the scale and perspective changes that commonly exist in crowd images, state-of-the-art approaches employ multi-column CNN architectures to regress density maps of crowd images. Multiple columns have different re...
computer science
29,998
All-Transfer Learning for Deep Neural Networks and its Application to Sepsis Classification
cs.CV
In this article, we propose a transfer learning method for deep neural networks (DNNs). Deep learning has been widely used in many applications. However, applying deep learning is problematic when a large amount of training data are not available. One of the conventional methods for solving this problem is transfer lea...
computer science
29,999
Visual Concepts and Compositional Voting
cs.CV
It is very attractive to formulate vision in terms of pattern theory \cite{Mumford2010pattern}, where patterns are defined hierarchically by compositions of elementary building blocks. But applying pattern theory to real world images is currently less successful than discriminative methods such as deep networks. Deep n...
computer science
30,000
An Automatic Diagnosis Method of Facial Acne Vulgaris Based on Convolutional Neural Network
cs.CV
In this paper, we present a new automatic diagnosis method of facial acne vulgaris based on convolutional neural network. This method is proposed to overcome the shortcoming of classification types in previous methods. The core of our method is to extract features of images based on convolutional neural network and ach...
computer science
30,001
Conditional Random Field and Deep Feature Learning for Hyperspectral Image Segmentation
cs.CV
Image segmentation is considered to be one of the critical tasks in hyperspectral remote sensing image processing. Recently, convolutional neural network (CNN) has established itself as a powerful model in segmentation and classification by demonstrating excellent performances. The use of a graphical model such as a co...
computer science