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28,502
Auto-Encoder Guided GAN for Chinese Calligraphy Synthesis
cs.CV
In this paper, we investigate the Chinese calligraphy synthesis problem: synthesizing Chinese calligraphy images with specified style from standard font(eg. Hei font) images (Fig. 1(a)). Recent works mostly follow the stroke extraction and assemble pipeline which is complex in the process and limited by the effect of s...
computer science
28,503
Approximate Reflection Symmetry in a Point Set: Theory and Algorithm with an Application
cs.CV
We propose an algorithm to detect approximate reflection symmetry present in a set of volumetrically distributed points belonging to $\mathbb{R}^d$ containing a distorted reflection symmetry pattern. We pose the problem of detecting approximate reflection symmetry as the problem of establishing the correspondences betw...
computer science
28,504
Recurrent Residual Learning for Action Recognition
cs.CV
Action recognition is a fundamental problem in computer vision with a lot of potential applications such as video surveillance, human computer interaction, and robot learning. Given pre-segmented videos, the task is to recognize actions happening within videos. Historically, hand crafted video features were used to add...
computer science
28,505
Rotational Rectification Network: Enabling Pedestrian Detection for Mobile Vision
cs.CV
Across a majority of pedestrian detection datasets, it is typically assumed that pedestrians will be standing upright with respect to the image coordinate system. This assumption, however, is not always valid for many vision-equipped mobile platforms such as mobile phones, UAVs or construction vehicles on rugged terrai...
computer science
28,506
Cross-Country Skiing Gears Classification using Deep Learning
cs.CV
Human Activity Recognition has witnessed a significant progress in the last decade. Although a great deal of work in this field goes in recognizing normal human activities, few studies focused on identifying motion in sports. Recognizing human movements in different sports has high impact on understanding the different...
computer science
28,507
Super-Resolution via Deep Learning
cs.CV
The recent phenomenal interest in convolutional neural networks (CNNs) must have made it inevitable for the super-resolution (SR) community to explore its potential. The response has been immense and in the last three years, since the advent of the pioneering work, there appeared too many works not to warrant a compreh...
computer science
28,508
Classification of Medical Images and Illustrations in the Biomedical Literature Using Synergic Deep Learning
cs.CV
The Classification of medical images and illustrations in the literature aims to label a medical image according to the modality it was produced or label an illustration according to its production attributes. It is an essential and challenging research hotspot in the area of automated literature review, retrieval and ...
computer science
28,509
Robust Lane Tracking with Multi-mode Observation Model and Particle Filtering
cs.CV
Automatic lane tracking involves estimating the underlying signal from a sequence of noisy signal observations. Many models and methods have been proposed for lane tracking, and dynamic targets tracking in general. The Kalman Filter is a widely used method that works well on linear Gaussian models. But this paper shows...
computer science
28,510
Perceptual Adversarial Networks for Image-to-Image Transformation
cs.CV
In this paper, we propose a principled Perceptual Adversarial Networks (PAN) for image-to-image transformation tasks. Unlike existing application-specific algorithms, PAN provides a generic framework of learning mapping relationship between paired images (Fig. 1), such as mapping a rainy image to its de-rained counterp...
computer science
28,511
Yes-Net: An effective Detector Based on Global Information
cs.CV
This paper introduces a new real-time object detection approach named Yes-Net. It realizes the prediction of bounding boxes and class via single neural network like YOLOv2 and SSD, but owns more efficient and outstanding features. It combines local information with global information by adding the RNN architecture as a...
computer science
28,512
A Parameterized Approach to Personalized Variable Length Summarization of Soccer Matches
cs.CV
We present a parameterized approach to produce personalized variable length summaries of soccer matches. Our approach is based on temporally segmenting the soccer video into 'plays', associating a user-specifiable 'utility' for each type of play and using 'bin-packing' to select a subset of the plays that add up to the...
computer science
28,513
The YouTube-8M Kaggle Competition: Challenges and Methods
cs.CV
We took part in the YouTube-8M Video Understanding Challenge hosted on Kaggle, and achieved the 10th place within less than one month's time. In this paper, we present an extensive analysis and solution to the underlying machine-learning problem based on frame-level data, where major challenges are identified and corre...
computer science
28,514
A New Urban Objects Detection Framework Using Weakly Annotated Sets
cs.CV
Urban informatics explore data science methods to address different urban issues intensively based on data. The large variety and quantity of data available should be explored but this brings important challenges. For instance, although there are powerful computer vision methods that may be explored, they may require l...
computer science
28,515
Online Adaptation of Convolutional Neural Networks for Video Object Segmentation
cs.CV
We tackle the task of semi-supervised video object segmentation, i.e. segmenting the pixels belonging to an object in the video using the ground truth pixel mask for the first frame. We build on the recently introduced one-shot video object segmentation (OSVOS) approach which uses a pretrained network and fine-tunes it...
computer science
28,516
Summarization of ICU Patient Motion from Multimodal Multiview Videos
cs.CV
Clinical observations indicate that during critical care at the hospitals, patients sleep positioning and motion affect recovery. Unfortunately, there is no formal medical protocol to record, quantify, and analyze patient motion. There is a small number of clinical studies, which use manual analysis of sleep poses and ...
computer science
28,517
You Are How You Walk: Uncooperative MoCap Gait Identification for Video Surveillance with Incomplete and Noisy Data
cs.CV
This work offers a design of a video surveillance system based on a soft biometric -- gait identification from MoCap data. The main focus is on two substantial issues of the video surveillance scenario: (1) the walkers do not cooperate in providing learning data to establish their identities and (2) the data are often ...
computer science
28,518
The application of deep convolutional neural networks to ultrasound for modelling of dynamic states within human skeletal muscle
cs.CV
This paper concerns the fully automatic direct in vivo measurement of active and passive dynamic skeletal muscle states using ultrasound imaging. Despite the long standing medical need (myopathies, neuropathies, pain, injury, ageing), currently technology (electromyography, dynamometry, shear wave imaging) provides no ...
computer science
28,519
Real-time Distracted Driver Posture Classification
cs.CV
Distracted driving is a worldwide problem leading to an astoundingly increasing number of accidents and deaths. Existing work is concerned with a very small set of distractions (mostly, cell phone usage). Also, for the most part, it uses unreliable ad-hoc methods to detect those distractions. In this paper, we present ...
computer science
28,520
Flow-free Video Object Segmentation
cs.CV
Segmenting foreground object from a video is a challenging task because of the large deformations of the objects, occlusions, and background clutter. In this paper, we propose a frame-by-frame but computationally efficient approach for video object segmentation by clustering visually similar generic object segments thr...
computer science
28,521
R2CNN: Rotational Region CNN for Orientation Robust Scene Text Detection
cs.CV
In this paper, we propose a novel method called Rotational Region CNN (R2CNN) for detecting arbitrary-oriented texts in natural scene images. The framework is based on Faster R-CNN [1] architecture. First, we use the Region Proposal Network (RPN) to generate axis-aligned bounding boxes that enclose the texts with diffe...
computer science
28,522
CS591 Report: Application of siamesa network in 2D transformation
cs.CV
Deep learning has been extensively used various aspects of computer vision area. Deep learning separate itself from traditional neural network by having a much deeper and complicated network layers in its network structures. Traditionally, deep neural network is abundantly used in computer vision tasks including classi...
computer science
28,523
Actor-Critic Sequence Training for Image Captioning
cs.CV
Generating natural language descriptions of images is an important capability for a robot or other visual-intelligence driven AI agent that may need to communicate with human users about what it is seeing. Such image captioning methods are typically trained by maximising the likelihood of ground-truth annotated caption...
computer science
28,524
Weakly-supervised localization of diabetic retinopathy lesions in retinal fundus images
cs.CV
Convolutional neural networks (CNNs) show impressive performance for image classification and detection, extending heavily to the medical image domain. Nevertheless, medical experts are sceptical in these predictions as the nonlinear multilayer structure resulting in a classification outcome is not directly graspable. ...
computer science
28,525
Co-salient Object Detection Based on Deep Saliency Networks and Seed Propagation over an Integrated Graph
cs.CV
This paper presents a co-salient object detection method to find common salient regions in a set of images. We utilize deep saliency networks to transfer co-saliency prior knowledge and better capture high-level semantic information, and the resulting initial co-saliency maps are enhanced by seed propagation steps over...
computer science
28,526
Iterative Spectral Clustering for Unsupervised Object Localization
cs.CV
This paper addresses the problem of unsupervised object localization in an image. Unlike previous supervised and weakly supervised algorithms that require bounding box or image level annotations for training classifiers in order to learn features representing the object, we propose a simple yet effective technique for ...
computer science
28,527
Robust Face Tracking using Multiple Appearance Models and Graph Relational Learning
cs.CV
This paper addresses the problem of appearance matching across different challenges while doing visual face tracking in real-world scenarios. In this paper, FaceTrack is proposed that utilizes multiple appearance models with its long-term and short-term appearance memory for efficient face tracking. It demonstrates rob...
computer science
28,528
What's Mine is Yours: Pretrained CNNs for Limited Training Sonar ATR
cs.CV
Finding mines in Sonar imagery is a significant problem with a great deal of relevance for seafaring military and commercial endeavors. Unfortunately, the lack of enormous Sonar image data sets has prevented automatic target recognition (ATR) algorithms from some of the same advances seen in other computer vision field...
computer science
28,529
Scale-Aware Face Detection
cs.CV
Convolutional neural network (CNN) based face detectors are inefficient in handling faces of diverse scales. They rely on either fitting a large single model to faces across a large scale range or multi-scale testing. Both are computationally expensive. We propose Scale-aware Face Detector (SAFD) to handle scale explic...
computer science
28,530
Automatic Face Image Quality Prediction
cs.CV
Face image quality can be defined as a measure of the utility of a face image to automatic face recognition. In this work, we propose (and compare) two methods for automatic face image quality based on target face quality values from (i) human assessments of face image quality (matcher-independent), and (ii) quality va...
computer science
28,531
Superpixel-based Semantic Segmentation Trained by Statistical Process Control
cs.CV
Semantic segmentation, like other fields of computer vision, has seen a remarkable performance advance by the use of deep convolution neural networks. However, considering that neighboring pixels are heavily dependent on each other, both learning and testing of these methods have a lot of redundant operations. To resol...
computer science
28,532
Improving Speech Related Facial Action Unit Recognition by Audiovisual Information Fusion
cs.CV
It is challenging to recognize facial action unit (AU) from spontaneous facial displays, especially when they are accompanied by speech. The major reason is that the information is extracted from a single source, i.e., the visual channel, in the current practice. However, facial activity is highly correlated with voice...
computer science
28,533
SMC Faster R-CNN: Toward a scene-specialized multi-object detector
cs.CV
Generally, the performance of a generic detector decreases significantly when it is tested on a specific scene due to the large variation between the source training dataset and the samples from the target scene. To solve this problem, we propose a new formalism of transfer learning based on the theory of a Sequential ...
computer science
28,534
Color-opponent mechanisms for local hue encoding in a hierarchical framework
cs.CV
A biologically plausible computational model for color representation is introduced. We present a mechanistic hierarchical model of neurons that not only successfully encodes local hue, but also explicitly reveals how the contributions of each visual cortical layer participating in the process can lead to a hue represe...
computer science
28,535
Multiple VLAD encoding of CNNs for image classification
cs.CV
Despite the effectiveness of convolutional neural networks (CNNs) especially in image classification tasks, the effect of convolution features on learned representations is still limited. It mostly focuses on the salient object of the images, but ignores the variation information on clutter and local. In this paper, we...
computer science
28,536
Adversarial Image Alignment and Interpolation
cs.CV
Volumetric (3d) images are acquired for many scientific and biomedical purposes using imaging methods such as serial section microscopy, CT scans, and MRI. A frequent step in the analysis and reconstruction of such data is the alignment and registration of images that were acquired in succession along a spatial or temp...
computer science
28,537
Better than Real: Complex-valued Neural Nets for MRI Fingerprinting
cs.CV
The task of MRI fingerprinting is to identify tissue parameters from complex-valued MRI signals. The prevalent approach is dictionary based, where a test MRI signal is compared to stored MRI signals with known tissue parameters and the most similar signals and tissue parameters retrieved. Such an approach does not scal...
computer science
28,538
Image Companding and Inverse Halftoning using Deep Convolutional Neural Networks
cs.CV
In this paper, we introduce deep learning technology to tackle two traditional low-level image processing problems, companding and inverse halftoning. We make two main contributions. First, to the best knowledge of the authors, this is the first work that has successfully developed deep learning based solutions to thes...
computer science
28,539
Deep GrabCut for Object Selection
cs.CV
Most previous bounding-box-based segmentation methods assume the bounding box tightly covers the object of interest. However it is common that a rectangle input could be too large or too small. In this paper, we propose a novel segmentation approach that uses a rectangle as a soft constraint by transforming it into an ...
computer science
28,540
Where to Play: Retrieval of Video Segments using Natural-Language Queries
cs.CV
In this paper, we propose a new approach for retrieval of video segments using natural language queries. Unlike most previous approaches such as concept-based methods or rule-based structured models, the proposed method uses image captioning model to construct sentential queries for visual information. In detail, our a...
computer science
28,541
Automatic Trimap Generation for Image Matting
cs.CV
Image matting is a longstanding problem in computational photography. Although, it has been studied for more than two decades, yet there is a challenge of developing an automatic matting algorithm which does not require any human efforts. Most of the state-of-the-art matting algorithms require human intervention in the...
computer science
28,542
Vectorial Dimension Reduction for Tensors Based on Bayesian Inference
cs.CV
Dimensionality reduction for high-order tensors is a challenging problem. In conventional approaches, higher order tensors are `vectorized` via Tucker decomposition to obtain lower order tensors. This will destroy the inherent high-order structures or resulting in undesired tensors, respectively. This paper introduces ...
computer science
28,543
Joint Pose and Principal Curvature Refinement Using Quadrics
cs.CV
In this paper we present a novel joint approach for optimising surface curvature and pose alignment. We present two implementations of this joint optimisation strategy, including a fast implementation that uses two frames and an offline multi-frame approach. We demonstrate an order of magnitude improvement in simulatio...
computer science
28,544
Physics Inspired Optimization on Semantic Transfer Features: An Alternative Method for Room Layout Estimation
cs.CV
In this paper, we propose an alternative method to estimate room layouts of cluttered indoor scenes. This method enjoys the benefits of two novel techniques. The first one is semantic transfer (ST), which is: (1) a formulation to integrate the relationship between scene clutter and room layout into convolutional neural...
computer science
28,545
A Fast Method For Computing Principal Curvatures From Range Images
cs.CV
Estimation of surface curvature from range data is important for a range of tasks in computer vision and robotics, object segmentation, object recognition and robotic grasping estimation. This work presents a fast method of robustly computing accurate metric principal curvature values from noisy point clouds which was ...
computer science
28,546
Pedestrian Alignment Network for Large-scale Person Re-identification
cs.CV
Person re-identification (person re-ID) is mostly viewed as an image retrieval problem. This task aims to search a query person in a large image pool. In practice, person re-ID usually adopts automatic detectors to obtain cropped pedestrian images. However, this process suffers from two types of detector errors: excess...
computer science
28,547
Deep Ranking Model by Large Adaptive Margin Learning for Person Re-identification
cs.CV
Person re-identification aims to match images of the same person across disjoint camera views, which is a challenging problem in video surveillance. The major challenge of this task lies in how to preserve the similarity of the same person against large variations caused by complex backgrounds, mutual occlusions and di...
computer science
28,548
Detection and Localization of Image Forgeries using Resampling Features and Deep Learning
cs.CV
Resampling is an important signature of manipulated images. In this paper, we propose two methods to detect and localize image manipulations based on a combination of resampling features and deep learning. In the first method, the Radon transform of resampling features are computed on overlapping image patches. Deep le...
computer science
28,549
End-to-End Learning of Video Super-Resolution with Motion Compensation
cs.CV
Learning approaches have shown great success in the task of super-resolving an image given a low resolution input. Video super-resolution aims for exploiting additionally the information from multiple images. Typically, the images are related via optical flow and consecutive image warping. In this paper, we provide an ...
computer science
28,550
Generalised Wasserstein Dice Score for Imbalanced Multi-class Segmentation using Holistic Convolutional Networks
cs.CV
The Dice score is widely used for binary segmentation due to its robustness to class imbalance. Soft generalisations of the Dice score allow it to be used as a loss function for training convolutional neural networks (CNN). Although CNNs trained using mean-class Dice score achieve state-of-the-art results on multi-clas...
computer science
28,551
Efficient Eye Typing with 9-direction Gaze Estimation
cs.CV
Vision based text entry systems aim to help disabled people achieve text communication using eye movement. Most previous methods have employed an existing eye tracker to predict gaze direction and design an input method based upon that. However, these methods can result in eye tracking quality becoming easily affected ...
computer science
28,552
Siamese Learning Visual Tracking: A Survey
cs.CV
The aim of this survey is an attempt to review the kind of machine learning and stochastic techniques and the ways existing work currently uses machine learning and stochastic methods for the challenging problem of visual tracking. It is not intended to study the whole tracking literature of the last decades as this se...
computer science
28,553
Automatic Cardiac Disease Assessment on cine-MRI via Time-Series Segmentation and Domain Specific Features
cs.CV
Cardiac magnetic resonance imaging improves on diagnosis of cardiovascular diseases by providing images at high spatiotemporal resolution. Manual evaluation of these time-series, however, is expensive and prone to biased and non-reproducible outcomes. In this paper, we present a method that addresses named limitations ...
computer science
28,554
Zero-Shot Learning - A Comprehensive Evaluation of the Good, the Bad and the Ugly
cs.CV
Due to the importance of zero-shot learning, i.e. classifying images where there is a lack of labeled training data, the number of proposed approaches has recently increased steadily. We argue that it is time to take a step back and to analyze the status quo of the area. The purpose of this paper is three-fold. First, ...
computer science
28,555
DeepIGeoS: A Deep Interactive Geodesic Framework for Medical Image Segmentation
cs.CV
Accurate medical image segmentation is essential for diagnosis, surgical planning and many other applications. Convolutional Neural Networks (CNNs) have become the state-of-the-art automatic segmentation methods. However, fully automatic results may still need to be refined to become accurate and robust enough for clin...
computer science
28,556
Temporal HeartNet: Towards Human-Level Automatic Analysis of Fetal Cardiac Screening Video
cs.CV
We present an automatic method to describe clinically useful information about scanning, and to guide image interpretation in ultrasound (US) videos of the fetal heart. Our method is able to jointly predict the visibility, viewing plane, location and orientation of the fetal heart at the frame level. The contributions ...
computer science
28,557
High-Quality Face Image SR Using Conditional Generative Adversarial Networks
cs.CV
We propose a novel single face image super-resolution method, which named Face Conditional Generative Adversarial Network(FCGAN), based on boundary equilibrium generative adversarial networks. Without taking any facial prior information, our method can generate a high-resolution face image from a low-resolution one. Co...
computer science
28,558
Zero-Shot Fine-Grained Classification by Deep Feature Learning with Semantics
cs.CV
Fine-grained image classification, which aims to distinguish images with subtle distinctions, is a challenging task due to two main issues: lack of sufficient training data for every class and difficulty in learning discriminative features for representation. In this paper, to address the two issues, we propose a two-p...
computer science
28,559
Deep Representation Learning with Part Loss for Person Re-Identification
cs.CV
Learning discriminative representations for unseen person images is critical for person Re-Identification (ReID). Most of current approaches learn deep representations in classification tasks, which essentially minimize the empirical classification risk on the training set. As shown in our experiments, such representat...
computer science
28,560
Aggregating Frame-level Features for Large-Scale Video Classification
cs.CV
This paper introduces the system we developed for the Google Cloud & YouTube-8M Video Understanding Challenge, which can be considered as a multi-label classification problem defined on top of the large scale YouTube-8M Dataset. We employ a large set of techniques to aggregate the provided frame-level feature represent...
computer science
28,561
Selective Deep Convolutional Features for Image Retrieval
cs.CV
Convolutional Neural Network (CNN) is a very powerful approach to extract discriminative local descriptors for effective image search. Recent work adopts fine-tuned strategies to further improve the discriminative power of the descriptors. Taking a different approach, in this paper, we propose a novel framework to achi...
computer science
28,562
One-Shot Fine-Grained Instance Retrieval
cs.CV
Fine-Grained Visual Categorization (FGVC) has achieved significant progress recently. However, the number of fine-grained species could be huge and dynamically increasing in real scenarios, making it difficult to recognize unseen objects under the current FGVC framework. This raises an open issue to perform large-scale...
computer science
28,563
Spatial and Angular Resolution Enhancement of Light Fields Using Convolutional Neural Networks
cs.CV
Light field imaging extends the traditional photography by capturing both spatial and angular distribution of light, which enables new capabilities, including post-capture refocusing, post-capture aperture control, and depth estimation from a single shot. Micro-lens array (MLA) based light field cameras offer a cost-ef...
computer science
28,564
Learning Human Pose Models from Synthesized Data for Robust RGB-D Action Recognition
cs.CV
We propose Human Pose Models that represent RGB and depth images of human poses independent of clothing textures, backgrounds, lighting conditions, body shapes and camera viewpoints. Learning such universal models requires training images where all factors are varied for every human pose. Capturing such data is prohibi...
computer science
28,565
Face Recognition with Machine Learning in OpenCV_ Fusion of the results with the Localization Data of an Acoustic Camera for Speaker Identification
cs.CV
This contribution gives an overview of face recogni-tion algorithms, their implementation and practical uses. First, a training set of different persons' faces has to be collected and used to train a face recognizer. The resulting face model can be utilized to classify people in specific individuals or unknowns. After ...
computer science
28,566
The Candidate Multi-Cut for Cell Segmentation
cs.CV
Two successful approaches for the segmentation of biomedical images are (1) the selection of segment candidates from a merge-tree, and (2) the clustering of small superpixels by solving a Multi-Cut problem. In this paper, we introduce a model that unifies both approaches. Our model, the Candidate Multi-Cut (CMC), allow...
computer science
28,567
LED-based Photometric Stereo: Modeling, Calibration and Numerical Solution
cs.CV
We conduct a thorough study of photometric stereo under nearby point light source illumination, from modeling to numerical solution, through calibration. In the classical formulation of photometric stereo, the luminous fluxes are assumed to be directional, which is very difficult to achieve in practice. Rather, we use ...
computer science
28,568
Skeleton-aided Articulated Motion Generation
cs.CV
This work make the first attempt to generate articulated human motion sequence from a single image. On the one hand, we utilize paired inputs including human skeleton information as motion embedding and a single human image as appearance reference, to generate novel motion frames, based on the conditional GAN infrastru...
computer science
28,569
ShuffleNet: An Extremely Efficient Convolutional Neural Network for Mobile Devices
cs.CV
We introduce an extremely computation-efficient CNN architecture named ShuffleNet, which is designed specially for mobile devices with very limited computing power (e.g., 10-150 MFLOPs). The new architecture utilizes two new operations, pointwise group convolution and channel shuffle, to greatly reduce computation cost...
computer science
28,570
Discriminative Localization in CNNs for Weakly-Supervised Segmentation of Pulmonary Nodules
cs.CV
Automated detection and segmentation of pulmonary nodules on lung computed tomography (CT) scans can facilitate early lung cancer diagnosis. Existing supervised approaches for automated nodule segmentation on CT scans require voxel-based annotations for training, which are labor- and time-consuming to obtain. In this w...
computer science
28,571
UPSET and ANGRI : Breaking High Performance Image Classifiers
cs.CV
In this paper, targeted fooling of high performance image classifiers is achieved by developing two novel attack methods. The first method generates universal perturbations for target classes and the second generates image specific perturbations. Extensive experiments are conducted on MNIST and CIFAR10 datasets to prov...
computer science
28,572
A Survey of Recent Advances in CNN-based Single Image Crowd Counting and Density Estimation
cs.CV
Estimating count and density maps from crowd images has a wide range of applications such as video surveillance, traffic monitoring, public safety and urban planning. In addition, techniques developed for crowd counting can be applied to related tasks in other fields of study such as cell microscopy, vehicle counting a...
computer science
28,573
Exploration of object recognition from 3D point cloud
cs.CV
We present our latest experiment results of object recognition from 3D point cloud data collected through moving car.
computer science
28,574
Laplacian-Steered Neural Style Transfer
cs.CV
Neural Style Transfer based on Convolutional Neural Networks (CNN) aims to synthesize a new image that retains the high-level structure of a content image, rendered in the low-level texture of a style image. This is achieved by constraining the new image to have high-level CNN features similar to the content image, and...
computer science
28,575
Learning-based Image Enhancement for Visual Odometry in Challenging HDR Environments
cs.CV
Most approaches to stereo visual odometry reconstruct the motion based on the tracking of point features along a sequence of images. However, in low-textured scenes it is often difficult to encounter a large set of point features, or it may happen that they are not well distributed over the image, so that the behavior ...
computer science
28,576
R-PHOC: Segmentation-Free Word Spotting using CNN
cs.CV
This paper proposes a region based convolutional neural network for segmentation-free word spotting. Our net- work takes as input an image and a set of word candidate bound- ing boxes and embeds all bounding boxes into an embedding space, where word spotting can be casted as a simple nearest neighbour search between th...
computer science
28,577
Fast Multi-frame Stereo Scene Flow with Motion Segmentation
cs.CV
We propose a new multi-frame method for efficiently computing scene flow (dense depth and optical flow) and camera ego-motion for a dynamic scene observed from a moving stereo camera rig. Our technique also segments out moving objects from the rigid scene. In our method, we first estimate the disparity map and the 6-DO...
computer science
28,578
Benchmarking Denoising Algorithms with Real Photographs
cs.CV
Lacking realistic ground truth data, image denoising techniques are traditionally evaluated on images corrupted by synthesized i.i.d. Gaussian noise. We aim to obviate this unrealistic setting by developing a methodology for benchmarking denoising techniques on real photographs. We capture pairs of images with differen...
computer science
28,579
Robust Multi-Image HDR Reconstruction for the Modulo Camera
cs.CV
Photographing scenes with high dynamic range (HDR) poses great challenges to consumer cameras with their limited sensor bit depth. To address this, Zhao et al. recently proposed a novel sensor concept - the modulo camera - which captures the least significant bits of the recorded scene instead of going into saturation....
computer science
28,580
A dataset for Computer-Aided Detection of Pulmonary Embolism in CTA images
cs.CV
Todays, researchers in the field of Pulmonary Embolism (PE) analysis need to use a publicly available dataset to assess and compare their methods. Different systems have been designed for the detection of pulmonary embolism (PE), but none of them have used any public datasets. All papers have used their own private dat...
computer science
28,581
Generative diffeomorphic atlas construction from brain and spinal cord MRI data
cs.CV
In this paper we will focus on the potential and on the challenges associated with the development of an integrated brain and spinal cord modelling framework for processing MR neuroimaging data. The aim of the work is to explore how a hierarchical generative model of imaging data, which captures simultaneously the dist...
computer science
28,582
AlignGAN: Learning to Align Cross-Domain Images with Conditional Generative Adversarial Networks
cs.CV
Recently, several methods based on generative adversarial network (GAN) have been proposed for the task of aligning cross-domain images or learning a joint distribution of cross-domain images. One of the methods is to use conditional GAN for alignment. However, previous attempts of adopting conditional GAN do not perfo...
computer science
28,583
Video Representation Learning and Latent Concept Mining for Large-scale Multi-label Video Classification
cs.CV
We report on CMU Informedia Lab's system used in Google's YouTube 8 Million Video Understanding Challenge. In this multi-label video classification task, our pipeline achieved 84.675% and 84.662% GAP on our evaluation split and the official test set. We attribute the good performance to three components: 1) Refined vid...
computer science
28,584
Dual Path Networks
cs.CV
In this work, we present a simple, highly efficient and modularized Dual Path Network (DPN) for image classification which presents a new topology of connection paths internally. By revealing the equivalence of the state-of-the-art Residual Network (ResNet) and Densely Convolutional Network (DenseNet) within the HORNN ...
computer science
28,585
RON: Reverse Connection with Objectness Prior Networks for Object Detection
cs.CV
We present RON, an efficient and effective framework for generic object detection. Our motivation is to smartly associate the best of the region-based (e.g., Faster R-CNN) and region-free (e.g., SSD) methodologies. Under fully convolutional architecture, RON mainly focuses on two fundamental problems: (a) multi-scale o...
computer science
28,586
Computer methods for 3D motion tracking in real-time
cs.CV
This thesis is devoted to marker-less 3D human motion tracking in calibrated and synchronized multicamera systems. Pose estimation is based on a 3D model, which is transformed into the image plane and then rendered. Owing to elaborated techniques the tracking of the full body has been achieved in real-time via dynamic ...
computer science
28,587
Tensor-Train Recurrent Neural Networks for Video Classification
cs.CV
The Recurrent Neural Networks and their variants have shown promising performances in sequence modeling tasks such as Natural Language Processing. These models, however, turn out to be impractical and difficult to train when exposed to very high-dimensional inputs due to the large input-to-hidden weight matrix. This ma...
computer science
28,588
Cardiologist-Level Arrhythmia Detection with Convolutional Neural Networks
cs.CV
We develop an algorithm which exceeds the performance of board certified cardiologists in detecting a wide range of heart arrhythmias from electrocardiograms recorded with a single-lead wearable monitor. We build a dataset with more than 500 times the number of unique patients than previously studied corpora. On this d...
computer science
28,589
Zero-Shot Deep Domain Adaptation
cs.CV
The existing methods of domain adaptation (DA) work under the assumption that the task-relevant target-domain training data is given. However, such assumption can be violated, which is often ignored by the prior works. To tackle this issue, we propose zero-shot deep domain adaptation (ZDDA), which uses the privileged i...
computer science
28,590
A Generalised Seizure Prediction with Convolutional Neural Networks for Intracranial and Scalp Electroencephalogram Data Analysis
cs.CV
Seizure prediction has attracted a growing attention as one of the most challenging predictive data analysis efforts in order to improve the life of patients living with drug-resistant epilepsy and tonic seizures. Many outstanding works have been reporting great results in providing a sensible indirect (warning systems...
computer science
28,591
On the Compactness, Efficiency, and Representation of 3D Convolutional Networks: Brain Parcellation as a Pretext Task
cs.CV
Deep convolutional neural networks are powerful tools for learning visual representations from images. However, designing efficient deep architectures to analyse volumetric medical images remains challenging. This work investigates efficient and flexible elements of modern convolutional networks such as dilated convolu...
computer science
28,592
Automatic Classification of Bright Retinal Lesions via Deep Network Features
cs.CV
The diabetic retinopathy is timely diagonalized through color eye fundus images by experienced ophthalmologists, in order to recognize potential retinal features and identify early-blindness cases. In this paper, it is proposed to extract deep features from the last fully-connected layer of, four different, pre-trained...
computer science
28,593
Image Segmentation Algorithms Overview
cs.CV
The technology of image segmentation is widely used in medical image processing, face recognition pedestrian detection, etc. The current image segmentation techniques include region-based segmentation, edge detection segmentation, segmentation based on clustering, segmentation based on weakly-supervised learning in CNN...
computer science
28,594
A spatiotemporal model with visual attention for video classification
cs.CV
High level understanding of sequential visual input is important for safe and stable autonomy, especially in localization and object detection. While traditional object classification and tracking approaches are specifically designed to handle variations in rotation and scale, current state-of-the-art approaches based ...
computer science
28,595
Deep Discrete Hashing with Self-supervised Pairwise Labels
cs.CV
Hashing methods have been widely used for applications of large-scale image retrieval and classification. Non-deep hashing methods using handcrafted features have been significantly outperformed by deep hashing methods due to their better feature representation and end-to-end learning framework. However, the most strik...
computer science
28,596
Sparse Approximation of 3D Meshes using the Spectral Geometry of the Hamiltonian Operator
cs.CV
The discrete Laplace operator is ubiquitous in spectral shape analysis, since its eigenfunctions are provably optimal in representing smooth functions defined on the surface of the shape. Indeed, subspaces defined by its eigenfunctions have been utilized for shape compression, treating the coordinates as smooth functio...
computer science
28,597
SigNet: Convolutional Siamese Network for Writer Independent Offline Signature Verification
cs.CV
Offline signature verification is one of the most challenging tasks in biometrics and document forensics. Unlike other verification problems, it needs to model minute but critical details between genuine and forged signatures, because a skilled falsification might often resembles the real signature with small deformati...
computer science
28,598
Design and Processing of Invertible Orientation Scores of 3D Images for Enhancement of Complex Vasculature
cs.CV
The enhancement and detection of elongated structures in noisy image data is relevant for many biomedical imaging applications. To handle complex crossing structures in 2D images, 2D orientation scores $U: \mathbb{R} ^ 2\times S ^ 1 \rightarrow \mathbb{C}$ were introduced, which already showed their use in a variety of...
computer science
28,599
A multi-layer image representation using Regularized Residual Quantization: application to compression and denoising
cs.CV
A learning-based framework for representation of domain-specific images is proposed where joint compression and denoising can be done using a VQ-based multi-layer network. While it learns to compress the images from a training set, the compression performance is very well generalized on images from a test set. Moreover...
computer science
28,600
The 2017 Hands in the Million Challenge on 3D Hand Pose Estimation
cs.CV
We present the 2017 Hands in the Million Challenge, a public competition designed for the evaluation of the task of 3D hand pose estimation. The goal of this challenge is to assess how far is the state of the art in terms of solving the problem of 3D hand pose estimation as well as detect major failure and strength mod...
computer science
28,601
Generative Adversarial Models for People Attribute Recognition in Surveillance
cs.CV
In this paper we propose a deep architecture for detecting people attributes (e.g. gender, race, clothing ...) in surveillance contexts. Our proposal explicitly deal with poor resolution and occlusion issues that often occur in surveillance footages by enhancing the images by means of Deep Convolutional Generative Adve...
computer science