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30,502
Learning Surrogate Models of Document Image Quality Metrics for Automated Document Image Processing
cs.CV
Computation of document image quality metrics often depends upon the availability of a ground truth image corresponding to the document. This limits the applicability of quality metrics in applications such as hyperparameter optimization of image processing algorithms that operate on-the-fly on unseen documents. This w...
computer science
30,503
Deep convolutional neural networks for brain image analysis on magnetic resonance imaging: a review
cs.CV
In recent years, deep convolutional neural networks (CNNs) have shown record-shattering performance in a variety of computer vision problems, such as visual object recognition, detection and segmentation. These methods have also been utilized in medical image analysis domain for lesion segmentation, anatomical segmenta...
computer science
30,504
Error Correction for Dense Semantic Image Labeling
cs.CV
Pixelwise semantic image labeling is an important, yet challenging, task with many applications. Typical approaches to tackle this problem involve either the training of deep networks on vast amounts of images to directly infer the labels or the use of probabilistic graphical models to jointly model the dependencies of...
computer science
30,505
Variational models for joint subsampling and reconstruction of turbulence-degraded images
cs.CV
Turbulence-degraded image frames are distorted by both turbulent deformations and space-time-varying blurs. To suppress these effects, we propose a multi-frame reconstruction scheme to recover a latent image from the observed image sequence. Recent approaches are commonly based on registering each frame to a reference ...
computer science
30,506
Unsupervised Feature Learning for Audio Analysis
cs.CV
Identifying acoustic events from a continuously streaming audio source is of interest for many applications including environmental monitoring for basic research. In this scenario neither different event classes are known nor what distinguishes one class from another. Therefore, an unsupervised feature learning method ...
computer science
30,507
Using a single RGB frame for real time 3D hand pose estimation in the wild
cs.CV
We present a method for the real-time estimation of the full 3D pose of one or more human hands using a single commodity RGB camera. Recent work in the area has displayed impressive progress using RGBD input. However, since the introduction of RGBD sensors, there has been little progress for the case of monocular color...
computer science
30,508
Feature Mapping for Learning Fast and Accurate 3D Pose Inference from Synthetic Images
cs.CV
We propose a simple and efficient method for exploiting synthetic images when training a Deep Network to predict a 3D pose from an image. The ability of using synthetic images for training a Deep Network is extremely valuable as it is easy to create a virtually infinite training set made of such images, while capturing...
computer science
30,509
3D Hand Pose Estimation: From Current Achievements to Future Goals
cs.CV
In this paper, we strive to answer two questions: What is the current state of 3D hand pose estimation? And, what are the next challenges that need to be tackled? Following the successful Hands In the Million Challenge (HIM2017), we investigate 11 state-of-the-art methods on three tasks: single frame 3D pose estimation...
computer science
30,510
A GRU-based Encoder-Decoder Approach with Attention for Online Handwritten Mathematical Expression Recognition
cs.CV
In this study, we present a novel end-to-end approach based on the encoder-decoder framework with the attention mechanism for online handwritten mathematical expression recognition (OHMER). First, the input two-dimensional ink trajectory information of handwritten expression is encoded via the gated recurrent unit base...
computer science
30,511
Learning Compressible 360° Video Isomers
cs.CV
Standard video encoders developed for conventional narrow field-of-view video are widely applied to 360{\deg} video as well, with reasonable results. However, while this approach commits arbitrarily to a projection of the spherical frames, we observe that some orientations of a 360{\deg} video, once projected, are more...
computer science
30,512
Im2Flow: Motion Hallucination from Static Images for Action Recognition
cs.CV
Existing methods to recognize actions in static images take the images at their face value, learning the appearances---objects, scenes, and body poses---that distinguish each action class. However, such models are deprived of the rich dynamic structure and motions that also define human activity. We propose an approach...
computer science
30,513
200x Low-dose PET Reconstruction using Deep Learning
cs.CV
Positron emission tomography (PET) is widely used in various clinical applications, including cancer diagnosis, heart disease and neuro disorders. The use of radioactive tracer in PET imaging raises concerns due to the risk of radiation exposure. To minimize this potential risk in PET imaging, efforts have been made to...
computer science
30,514
A vision based system for underwater docking
cs.CV
Autonomous underwater vehicles (AUVs) have been deployed for underwater exploration. However, its potential is confined by its limited on-board battery energy and data storage capacity. This problem has been addressed using docking systems by underwater recharging and data transfer for AUVs. In this work, we propose a ...
computer science
30,515
Direction-aware Spatial Context Features for Shadow Detection
cs.CV
Shadow detection is a fundamental and challenging task, since it requires an understanding of global image semantics and there are various backgrounds around shadows. This paper presents a novel network for shadow detection by analyzing image context in a direction-aware manner. To achieve this, we first formulate the ...
computer science
30,516
Review. Machine learning techniques for traffic sign detection
cs.CV
An automatic road sign detection system localizes road signs from within images captured by an on-board camera of a vehicle, and support the driver to properly ride the vehicle. Most existing algorithms include a preprocessing step, feature extraction and detection step. This paper arranges the methods applied to road ...
computer science
30,517
Conditional Generative Adversarial Networks for Emoji Synthesis with Word Embedding Manipulation
cs.CV
Emojis have become a very popular part of daily digital communication. Their appeal comes largely in part due to their ability to capture and elicit emotions in a more subtle and nuanced way than just plain text is able to. In line with recent advances in the field of deep learning, there are far reaching implications ...
computer science
30,518
3D Object Classification via Spherical Projections
cs.CV
In this paper, we introduce a new method for classifying 3D objects. Our main idea is to project a 3D object onto a spherical domain centered around its barycenter and develop neural network to classify the spherical projection. We introduce two complementary projections. The first captures depth variations of a 3D obj...
computer science
30,519
Data Distillation: Towards Omni-Supervised Learning
cs.CV
We investigate omni-supervised learning, a special regime of semi-supervised learning in which the learner exploits all available labeled data plus internet-scale sources of unlabeled data. Omni-supervised learning is lower-bounded by performance on existing labeled datasets, offering the potential to surpass state-of-...
computer science
30,520
Learning a Complete Image Indexing Pipeline
cs.CV
To work at scale, a complete image indexing system comprises two components: An inverted file index to restrict the actual search to only a subset that should contain most of the items relevant to the query; An approximate distance computation mechanism to rapidly scan these lists. While supervised deep learning has re...
computer science
30,521
Fingerprint Spoof Buster
cs.CV
The primary purpose of a fingerprint recognition system is to ensure a reliable and accurate user authentication, but the security of the recognition system itself can be jeopardized by spoof attacks. This study addresses the problem of developing accurate, generalizable, and efficient algorithms for detecting fingerpr...
computer science
30,522
Camera Calibration for Daylight Specular-Point Locus
cs.CV
In this paper we present a new camera calibration method aimed at finding a straight-line locus, in a special colour feature space, that is traversed by daylights and as well also approximately followed by specular points. The aim of the calibration is to enable recovering the colour of the illuminant in a scene, using...
computer science
30,523
Im2Pano3D: Extrapolating 360 Structure and Semantics Beyond the Field of View
cs.CV
We present Im2Pano3D, a convolutional neural network that generates a dense prediction of 3D structure and a probability distribution of semantic labels for a full 360 panoramic view of an indoor scene when given only a partial observation (<= 50%) in the form of an RGB-D image. To make this possible, Im2Pano3D leverag...
computer science
30,524
Fusing Multiple Multiband Images
cs.CV
We consider the problem of fusing an arbitrary number of multiband, i.e., panchromatic, multispectral, or hyperspectral, images belonging to the same scene. We use the well-known forward observation and linear mixture models with Gaussian perturbations to formulate the maximum-likelihood estimator of the endmember abun...
computer science
30,525
Transfer Adversarial Hashing for Hamming Space Retrieval
cs.CV
Hashing is widely applied to large-scale image retrieval due to the storage and retrieval efficiency. Existing work on deep hashing assumes that the database in the target domain is identically distributed with the training set in the source domain. This paper relaxes this assumption to a transfer retrieval setting, wh...
computer science
30,526
The Effectiveness of Data Augmentation in Image Classification using Deep Learning
cs.CV
In this paper, we explore and compare multiple solutions to the problem of data augmentation in image classification. Previous work has demonstrated the effectiveness of data augmentation through simple techniques, such as cropping, rotating, and flipping input images. We artificially constrain our access to data to a ...
computer science
30,527
Learning Disentangling and Fusing Networks for Face Completion Under Structured Occlusions
cs.CV
Face completion aims to generate semantically new pixels for missing facial components. It is a challenging generative task due to large variations of face appearance. This paper studies generative face completion under structured occlusions. We treat the face completion and corruption as disentangling and fusing proce...
computer science
30,528
UV-GAN: Adversarial Facial UV Map Completion for Pose-invariant Face Recognition
cs.CV
Recently proposed robust 3D face alignment methods establish either dense or sparse correspondence between a 3D face model and a 2D facial image. The use of these methods presents new challenges as well as opportunities for facial texture analysis. In particular, by sampling the image using the fitted model, a facial U...
computer science
30,529
The Enhanced Hybrid MobileNet
cs.CV
Although complicated and deep neural network models can achieve high accuracy of image recognition, they require huge amount of computations and parameters and are not suitable for mobile and embedded devices. As a result, MobileNet was proposed, which can reduce the amount of parameters and computational cost dramatic...
computer science
30,530
Regularization and Optimization strategies in Deep Convolutional Neural Network
cs.CV
Convolution Neural Networks, known as ConvNets exceptionally perform well in many complex machine learning tasks. The architecture of ConvNets demands the huge and rich amount of data and involves with a vast number of parameters that leads the learning takes to be computationally expensive, slow convergence towards th...
computer science
30,531
GMM-Based Synthetic Samples for Classification of Hyperspectral Images With Limited Training Data
cs.CV
The amount of training data that is required to train a classifier scales with the dimensionality of the feature data. In hyperspectral remote sensing, feature data can potentially become very high dimensional. However, the amount of training data is oftentimes limited. Thus, one of the core challenges in hyperspectral...
computer science
30,532
Symbol detection in online handwritten graphics using Faster R-CNN
cs.CV
Symbol detection techniques in online handwritten graphics (e.g. diagrams and mathematical expressions) consist of methods specifically designed for a single graphic type. In this work, we evaluate the Faster R-CNN object detection algorithm as a general method for detection of symbols in handwritten graphics. We evalu...
computer science
30,533
MaskLab: Instance Segmentation by Refining Object Detection with Semantic and Direction Features
cs.CV
In this work, we tackle the problem of instance segmentation, the task of simultaneously solving object detection and semantic segmentation. Towards this goal, we present a model, called MaskLab, which produces three outputs: box detection, semantic segmentation, and direction prediction. Building on top of the Faster-...
computer science
30,534
Self-Supervised Depth Learning for Urban Scene Understanding
cs.CV
As an agent moves through the world, the apparent motion of scene elements is (usually) inversely proportional to their depth. It is natural for a learning agent to associate image patterns with the magnitude of their displacement over time: as the agent moves, far away mountains don't move much; nearby trees move a lo...
computer science
30,535
Rethinking Spatiotemporal Feature Learning For Video Understanding
cs.CV
In this paper we study 3D convolutional networks for video understanding tasks. Our starting point is the state-of-the-art I3D model, which "inflates" all the 2D filters of the Inception architecture to 3D. We first consider "deflating" the I3D model at various levels to understand the role of 3D convolutions. Interest...
computer science
30,536
Object Classification using Ensemble of Local and Deep Features
cs.CV
In this paper we propose an ensemble of local and deep features for object classification. We also compare and contrast effectiveness of feature representation capability of various layers of convolutional neural network. We demonstrate with extensive experiments for object classification that the representation capabi...
computer science
30,537
Enhanced Characterness for Text Detection in the Wild
cs.CV
Text spotting is an interesting research problem as text may appear at any random place and may occur in various forms. Moreover, ability to detect text opens the horizons for improving many advanced computer vision problems. In this paper, we propose a novel language agnostic text detection method utilizing edge enhan...
computer science
30,538
Real-time Egocentric Gesture Recognition on Mobile Head Mounted Displays
cs.CV
Mobile virtual reality (VR) head mounted displays (HMD) have become popular among consumers in recent years. In this work, we demonstrate real-time egocentric hand gesture detection and localization on mobile HMDs. Our main contributions are: 1) A novel mixed-reality data collection tool to automatic annotate bounding ...
computer science
30,539
Unsupervised Histopathology Image Synthesis
cs.CV
Hematoxylin and Eosin stained histopathology image analysis is essential for the diagnosis and study of complicated diseases such as cancer. Existing state-of-the-art approaches demand extensive amount of supervised training data from trained pathologists. In this work we synthesize in an unsupervised manner, large his...
computer science
30,540
Pediatric Bone Age Assessment Using Deep Convolutional Neural Networks
cs.CV
Skeletal bone age assessment is a common clinical practice to diagnose endocrine and metabolic disorders in child development. In this paper, we describe a fully automated deep learning approach to the problem of bone age assessment using data from Pediatric Bone Age Challenge organized by RSNA 2017. The dataset for th...
computer science
30,541
MentorNet: Regularizing Very Deep Neural Networks on Corrupted Labels
cs.CV
Recent studies have discovered that deep networks are capable of memorizing the entire data even when the labels are completely random. Since deep models are trained on big data where labels are often noisy, the ability to overfit noise can lead to poor performance. To overcome the overfitting on corrupted training dat...
computer science
30,542
Weakly Supervised Action Localization by Sparse Temporal Pooling Network
cs.CV
We propose a weakly supervised temporal action localization algorithm on untrimmed videos using convolutional neural networks. Our algorithm predicts temporal intervals of human actions given video-level class labels with no requirement of temporal localization information of actions. This objective is achieved by prop...
computer science
30,543
Extreme 3D Face Reconstruction: Looking Past Occlusions
cs.CV
Existing single view, 3D face reconstruction methods can produce beautifully detailed 3D results, but typically only for near frontal, unobstructed viewpoints. We describe a system designed to provide detailed 3D reconstructions of faces viewed under extreme conditions, out of plane rotations, and occlusions. Motivated...
computer science
30,544
Detection and Attention: Diagnosing Pulmonary Lung Cancer from CT by Imitating Physicians
cs.CV
This paper proposes a novel and efficient method to build a Computer-Aided Diagnoses (CAD) system for lung nodule detection based on Computed Tomography (CT). This task was treated as an Object Detection on Video (VID) problem by imitating how a radiologist reads CT scans. A lung nodule detector was trained to automati...
computer science
30,545
Multi-appearance Segmentation and Extended 0-1 Program for Dense Small Object Tracking
cs.CV
Aiming to address the fast multi-object tracking for dense small object in the cluster background, we review track orientated multi-hypothesis tracking(TOMHT) with consideration of batch optimization. Employing autocorrelation based motion score test and staged hypotheses merging approach, we build our homologous hypot...
computer science
30,546
Semi-Automatic Algorithm for Breast MRI Lesion Segmentation Using Marker-Controlled Watershed Transformation
cs.CV
Magnetic resonance imaging (MRI) is an effective imaging modality for identifying and localizing breast lesions in women. Accurate and precise lesion segmentation using a computer-aided-diagnosis (CAD) system, is a crucial step in evaluating tumor volume and in the quantification of tumor characteristics. However, this...
computer science
30,547
Robust Estimation of Similarity Transformation for Visual Object Tracking with Correlation Filters
cs.CV
Most of existing correlation filter-based tracking approaches only estimate simple axis-aligned bounding boxes, and very few of them is capable of recovering the underlying similarity transformation. To a large extent, such limitation restricts the applications of such trackers for a wide range of scenarios. In this pa...
computer science
30,548
Image Super-resolution via Feature-augmented Random Forest
cs.CV
Recent random-forest (RF)-based image super-resolution approaches inherit some properties from dictionary-learning-based algorithms, but the effectiveness of the properties in RF is overlooked in the literature. In this paper, we present a novel feature-augmented random forest (FARF) for image super-resolution, where t...
computer science
30,549
A Performance Evaluation of Local Features for Image Based 3D Reconstruction
cs.CV
This paper performs a comprehensive and comparative evaluation of the state of the art local features for the task of image based 3D reconstruction. The evaluated local features cover the recently developed ones by using powerful machine learning techniques and the elaborately designed handcrafted features. To obtain a...
computer science
30,550
Face-from-Depth for Head Pose Estimation on Depth Images
cs.CV
Depth cameras allow to setup reliable solutions for people monitoring and behavior understanding, specially when unstable or poor illumination conditions make unusable common RGB sensors. Therefore, we propose a complete framework for the estimation of the head and shoulder pose based on depth images only. A head detec...
computer science
30,551
Deep CNN ensembles and suggestive annotations for infant brain MRI segmentation
cs.CV
Precise 3D segmentation of infant brain tissues is an essential step towards comprehensive volumetric studies and quantitative analysis of early brain developement. However, computing such segmentations is very challenging, especially for 6-month infant brain, due to the poor image quality, among other difficulties inh...
computer science
30,552
SEE: Towards Semi-Supervised End-to-End Scene Text Recognition
cs.CV
Detecting and recognizing text in natural scene images is a challenging, yet not completely solved task. In recent years several new systems that try to solve at least one of the two sub-tasks (text detection and text recognition) have been proposed. In this paper we present SEE, a step towards semi-supervised neural n...
computer science
30,553
RAN4IQA: Restorative Adversarial Nets for No-Reference Image Quality Assessment
cs.CV
Inspired by the free-energy brain theory, which implies that human visual system (HVS) tends to reduce uncertainty and restore perceptual details upon seeing a distorted image, we propose restorative adversarial net (RAN), a GAN-based model for no-reference image quality assessment (NR-IQA). RAN, which mimics the proce...
computer science
30,554
Visual Based Navigation of Mobile Robots
cs.CV
We have developed an algorithm to generate a complete map of the traversable region for a personal assistant robot using monocular vision only. Using multiple taken by a simple webcam, obstacle detection and avoidance algorithms have been developed. Simple Linear Iterative Clustering (SLIC) has been used for segmentati...
computer science
30,555
Transfer Learning for OCRopus Model Training on Early Printed Books
cs.CV
A method is presented that significantly reduces the character error rates for OCR text obtained from OCRopus models trained on early printed books when only small amounts of diplomatic transcriptions are available. This is achieved by building from already existing models during training instead of starting from scrat...
computer science
30,556
Fast Hough Transform and approximation properties of dyadic patterns
cs.CV
Hough transform is a popular low-level computer vision algorithm. Its computationally effective modification, Fast Hough transform (FHT), makes use of special subsets of image matrix to approximate geometric lines on it. Because of their special structure, these subset are called dyadic patterns. In this paper variou...
computer science
30,557
Automated Image Analysis Framework for the High-Throughput Determination of Grapevine Berry Sizes Using Conditional Random Fields
cs.CV
The berry size is one of the most important fruit traits in grapevine breeding. Non-invasive, image-based phenotyping promises a fast and precise method for the monitoring of the grapevine berry size. In the present study an automated image analyzing framework was developed in order to estimate the size of grapevine be...
computer science
30,558
Unsupervised Domain Adaptation for 3D Keypoint Prediction from a Single Depth Scan
cs.CV
In this paper, we introduce a novel unsupervised domain adaptation technique for the task of 3D keypoint prediction from a single depth scan/image. Our key idea is to utilize the fact that predictions from different views of the same or similar objects should be consistent with each other. Such view consistency provide...
computer science
30,559
Semantic Visual Localization
cs.CV
Robust visual localization under a wide range of viewing conditions is a fundamental problem in computer vision. Handling the difficult cases of this problem is not only very challenging but also of high practical relevance, e.g., in the context of life-long localization for augmented reality or autonomous robots. In t...
computer science
30,560
Multi-Attribute Robust Component Analysis for Facial UV Maps
cs.CV
Recently, due to the collection of large scale 3D face models, as well as the advent of deep learning, a significant progress has been made in the field of 3D face alignment "in-the-wild". That is, many methods have been proposed that establish sparse or dense 3D correspondences between a 2D facial image and a 3D face ...
computer science
30,561
Mapping the world population one building at a time
cs.CV
High resolution datasets of population density which accurately map sparsely-distributed human populations do not exist at a global scale. Typically, population data is obtained using censuses and statistical modeling. More recently, methods using remotely-sensed data have emerged, capable of effectively identifying ur...
computer science
30,562
Impression Network for Video Object Detection
cs.CV
Video object detection is more challenging compared to image object detection. Previous works proved that applying object detector frame by frame is not only slow but also inaccurate. Visual clues get weakened by defocus and motion blur, causing failure on corresponding frames. Multi-frame feature fusion methods proved...
computer science
30,563
SRPGAN: Perceptual Generative Adversarial Network for Single Image Super Resolution
cs.CV
Single image super resolution (SISR) is to reconstruct a high resolution image from a single low resolution image. The SISR task has been a very attractive research topic over the last two decades. In recent years, convolutional neural network (CNN) based models have achieved great performance on SISR task. Despite the...
computer science
30,564
Learning a Virtual Codec Based on Deep Convolutional Neural Network to Compress Image
cs.CV
Although deep convolutional neural network has been proved to efficiently eliminate coding artifacts caused by the coarse quantization of traditional codec, it's difficult to train any neural network in front of the encoder for gradient's back-propagation. In this paper, we propose an end-to-end image compression frame...
computer science
30,565
An ILP Solver for Multi-label MRFs with Connectivity Constraints
cs.CV
Integer Linear Programming (ILP) formulations of Markov random fields (MRFs) models with global connectivity priors were investigated previously in computer vision, e.g., \cite{globalinter,globalconn}. In these works, only Linear Programing (LP) relaxations \cite{globalinter,globalconn} or simplified versions \cite{gra...
computer science
30,566
Spatial As Deep: Spatial CNN for Traffic Scene Understanding
cs.CV
Convolutional neural networks (CNNs) are usually built by stacking convolutional operations layer-by-layer. Although CNN has shown strong capability to extract semantics from raw pixels, its capacity to capture spatial relationships of pixels across rows and columns of an image is not fully explored. These relationship...
computer science
30,567
Railway Track Specific Traffic Signal Selection Using Deep Learning
cs.CV
With the railway transportation Industry moving actively towards automation, accurate location and inventory of wayside track assets like traffic signals, crossings, switches, mileposts, etc. is of extreme importance. With the new Positive Train Control (PTC) regulation coming into effect, many railway safety rules wil...
computer science
30,568
Learning a Single Convolutional Super-Resolution Network for Multiple Degradations
cs.CV
Recent years have witnessed the unprecedented success of deep convolutional neural networks (CNNs) in single image super-resolution (SISR). However, existing CNN-based SISR methods mostly assume that a low-resolution (LR) image is bicubicly downsampled from a high-resolution (HR) image, thus inevitably giving rise to p...
computer science
30,569
clcNet: Improving the Efficiency of Convolutional Neural Network using Channel Local Convolutions
cs.CV
Depthwise convolution and grouped convolution has been successfully applied to improve the efficiency of convolutional neural network (CNN). We suggest that these models can be considered as special cases of a generalized convolution operation, named channel local convolution(CLC), where an output channel is computed u...
computer science
30,570
LSTM Pose Machines
cs.CV
We observed that recent state-of-the-art results on single image human pose estimation were achieved by multi-stage Convolution Neural Networks (CNN). Notwithstanding the superior performance on static images, the application of these models on videos is not only computationally intensive, it also suffers from performa...
computer science
30,571
Object Detection with an Aligned Spatial-Temporal Memory
cs.CV
We introduce Spatial-Temporal Memory Networks (STMN) for object detection in videos. At its core, we propose a novel Spatial-Temporal Memory module (STMM) as the recurrent computation unit to model long-term temporal appearance and motion dynamics. The STMM's design enables the full integration of pretrained backbone C...
computer science
30,572
Space-Filling Curve Indices as Acceleration Structure for Exemplar-Based Inpainting
cs.CV
Exemplar-based inpainting is the process of reconstructing missing parts of an image by searching the remaining data for patches that fit seamlessly. The image is completed to a plausible-looking solution by repeatedly inserting the patch that is the best match according to some cost function. We present an acceleratio...
computer science
30,573
Automatic Classification of Functional Gait Disorders
cs.CV
This article proposes a comprehensive investigation of the automatic classification of functional gait disorders based solely on ground reaction force (GRF) measurements. The aim of the study is twofold: (1) to investigate the suitability of stateof-the-art GRF parameterization techniques (representations) for the disc...
computer science
30,574
Automatic segmentation method of pelvic floor levator hiatus in ultrasound using a self-normalising neural network
cs.CV
Segmentation of the levator hiatus in ultrasound allows to extract biometrics which are of importance for pelvic floor disorder assessment. In this work, we present a fully automatic method using a convolutional neural network (CNN) to outline the levator hiatus in a 2D image extracted from a 3D ultrasound volume. In p...
computer science
30,575
Super-Resolution with Deep Adaptive Image Resampling
cs.CV
Deep learning based methods have recently pushed the state-of-the-art on the problem of Single Image Super-Resolution (SISR). In this work, we revisit the more traditional interpolation-based methods, that were popular before, now with the help of deep learning. In particular, we propose to use a Convolutional Neural N...
computer science
30,576
Multi-modal Face Pose Estimation with Multi-task Manifold Deep Learning
cs.CV
Human face pose estimation aims at estimating the gazing direction or head postures with 2D images. It gives some very important information such as communicative gestures, saliency detection and so on, which attracts plenty of attention recently. However, it is challenging because of complex background, various orient...
computer science
30,577
Guiding human gaze with convolutional neural networks
cs.CV
The eye fixation patterns of human observers are a fundamental indicator of the aspects of an image to which humans attend. Thus, manipulating fixation patterns to guide human attention is an exciting challenge in digital image processing. Here, we present a new model for manipulating images to change the distribution ...
computer science
30,578
Multi-point Vibration Measurement for Mode Identification of Bridge Structures using Video-based Motion Magnification
cs.CV
Image-based vibration mode identification gained increased attentions in civil and construction communities. A recent video-based motion magnification method was developed to measure and visualize small structure motions. This new approach presents a potential for low-cost vibration measurement and mode shape identific...
computer science
30,579
End-to-end Recovery of Human Shape and Pose
cs.CV
We describe Human Mesh Recovery (HMR), an end-to-end framework for reconstructing a full 3D mesh of a human body from a single RGB image. In contrast to most current methods that compute 2D or 3D joint locations, we produce a richer and more useful mesh representation that is parameterized by shape and 3D joint angles....
computer science
30,580
DecideNet: Counting Varying Density Crowds Through Attention Guided Detection and Density Estimation
cs.CV
In real-world crowd counting applications, the crowd densities vary greatly in spatial and temporal domains. A detection based counting method will estimate crowds accurately in low density scenes, while its reliability in congested areas is downgraded. A regression based approach, on the other hand, captures the gener...
computer science
30,581
PixelBNN: Augmenting the PixelCNN with batch normalization and the presentation of a fast architecture for retinal vessel segmentation
cs.CV
Analysis of retinal fundus images is essential for eye-care physicians in the diagnosis, care and treatment of patients. Accurate fundus and/or retinal vessel maps give rise to longitudinal studies able to utilize multimedia image registration and disease/condition status measurements, as well as applications in surger...
computer science
30,582
Neighbors Do Help: Deeply Exploiting Local Structures of Point Clouds
cs.CV
Unlike on images, semantic learning on 3D point clouds using a deep network is challenging due to the naturally unordered data structure. Among existing works, PointNet has achieved promising results by directly learning on point sets. However, it does not take full advantage of a point's local neighborhood that contai...
computer science
30,583
MovieGraphs: Towards Understanding Human-Centric Situations from Videos
cs.CV
There is growing interest in artificial intelligence to build socially intelligent robots. This requires machines to have the ability to "read" people's emotions, motivations, and other factors that affect behavior. Towards this goal, we introduce a novel dataset called MovieGraphs which provides detailed, graph-based ...
computer science
30,584
Hierarchical Cross Network for Person Re-identification
cs.CV
Person re-identification (person re-ID) aims at matching target person(s) grabbed from different and non-overlapping camera views. It plays an important role for public safety and has application in various tasks such as, human retrieval, human tracking, and activity analysis. In this paper, we propose a new network ar...
computer science
30,585
Single Image Deraining using Scale-Aware Multi-Stage Recurrent Network
cs.CV
Given a single input rainy image, our goal is to visually remove rain streaks and the veiling effect caused by scattering and transmission of rain streaks and rain droplets. We are particularly concerned with heavy rain, where rain streaks of various sizes and directions can overlap each other and the veiling effect re...
computer science
30,586
Comparison of fingerprint authentication algorithms for small imaging sensors
cs.CV
The demand for biometric systems has been increasing with the growth of the smartphone market. Biometric devices allow the user to authenticate easily while securing its private data without the need to remember any access code. Amongst them, fingerprint sensors are the most widespread because they seem to provide a go...
computer science
30,587
Learning Fixation Point Strategy for Object Detection and Classification
cs.CV
We propose a novel recurrent attentional structure to localize and recognize objects jointly. The network can learn to extract a sequence of local observations with detailed appearance and rough context, instead of sliding windows or convolutions on the entire image. Meanwhile, those observations are fused to complete ...
computer science
30,588
On the Evaluation of Video Keyframe Summaries using User Ground Truth
cs.CV
Given the great interest in creating keyframe summaries from video, it is surprising how little has been done to formalise their evaluation and comparison. User studies are often carried out to demonstrate that a proposed method generates a more appealing summary than one or two rival methods. But larger comparison stu...
computer science
30,589
Cross-language Framework for Word Recognition and Spotting of Indic Scripts
cs.CV
Handwritten word recognition and spotting of low-resource scripts are difficult as sufficient training data is not available and it is often expensive for collecting data of such scripts. This paper presents a novel cross language platform for handwritten word recognition and spotting for such low-resource scripts wher...
computer science
30,590
ComboGAN: Unrestrained Scalability for Image Domain Translation
cs.CV
This year alone has seen unprecedented leaps in the area of learning-based image translation, namely CycleGAN, by Zhu et al. But experiments so far have been tailored to merely two domains at a time, and scaling them to more would require an quadratic number of models to be trained. And with two-domain models taking da...
computer science
30,591
Bipartite Graph Matching for Keyframe Summary Evaluation
cs.CV
A keyframe summary, or "static storyboard", is a collection of frames from a video designed to summarise its semantic content. Many algorithms have been proposed to extract such summaries automatically. How best to evaluate these outputs is an important but little-discussed question. We review the current methods for m...
computer science
30,592
Scale-Space Anisotropic Total Variation for Limited Angle Tomography
cs.CV
This paper addresses streak reduction in limited angle tomography. Although the iterative reweighted total variation (wTV) algorithm reduces small streaks well, it is rather inept at eliminating large ones since total variation (TV) regularization is scale-dependent and may regard these streaks as homogeneous areas. He...
computer science
30,593
Learning with Imprinted Weights
cs.CV
Human vision is able to immediately recognize novel visual categories after seeing just one or a few training examples. We describe how to add a similar capability to ConvNet classifiers by directly setting the final layer weights from novel training examples during low-shot learning. We call this process weight imprin...
computer science
30,594
Real-time deep hair matting on mobile devices
cs.CV
Augmented reality is an emerging technology in many application domains. Among them is the beauty industry, where live virtual try-on of beauty products is of great importance. In this paper, we address the problem of live hair color augmentation. To achieve this goal, hair needs to be segmented quickly and accurately....
computer science
30,595
Deep Regression Forests for Age Estimation
cs.CV
Age estimation from facial images is typically cast as a nonlinear regression problem. The main challenge of this problem is the facial feature space w.r.t. ages is heterogeneous, due to the large variation in facial appearance across different persons of the same age and the non-stationary property of aging patterns. ...
computer science
30,596
FoldingNet: Interpretable Unsupervised Learning on 3D Point Clouds
cs.CV
Recent deep networks that directly handle points in a point set, e.g., PointNet, have been state-of-the-art for supervised semantic learning tasks on point clouds such as classification and segmentation. In this work, a novel end-to-end deep auto-encoder is proposed to address unsupervised learning challenges on point ...
computer science
30,597
Learning Sight from Sound: Ambient Sound Provides Supervision for Visual Learning
cs.CV
The sound of crashing waves, the roar of fast-moving cars -- sound conveys important information about the objects in our surroundings. In this work, we show that ambient sounds can be used as a supervisory signal for learning visual models. To demonstrate this, we train a convolutional neural network to predict a stat...
computer science
30,598
LVreID: Person Re-Identification with Long Sequence Videos
cs.CV
This paper mainly establishes a large-scale Long sequence Video database for person re-IDentification (LVreID). Different from existing datasets, LVreID presents many important new features. (1) long sequences: the average sequence length is 200 frames, which convey more abundant cues like pose and viewpoint changes th...
computer science
30,599
Lost in Time: Temporal Analytics for Long-Term Video Surveillance
cs.CV
Video surveillance is a well researched area of study with substantial work done in the aspects of object detection, tracking and behavior analysis. With the abundance of video data captured over a long period of time, we can understand patterns in human behavior and scene dynamics through data-driven temporal analytic...
computer science
30,600
On the Diversity of Realistic Image Synthesis
cs.CV
Many image processing tasks can be formulated as translating images between two image domains, such as colorization, super resolution and conditional image synthesis. In most of these tasks, an input image may correspond to multiple outputs. However, current existing approaches only show very minor diversity of the out...
computer science
30,601
DeepFuse: A Deep Unsupervised Approach for Exposure Fusion with Extreme Exposure Image Pairs
cs.CV
We present a novel deep learning architecture for fusing static multi-exposure images. Current multi-exposure fusion (MEF) approaches use hand-crafted features to fuse input sequence. However, the weak hand-crafted representations are not robust to varying input conditions. Moreover, they perform poorly for extreme exp...
computer science