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29,302
Gaussian Filter in CRF Based Semantic Segmentation
cs.CV
Artificial intelligence is making great changes in academy and industry with the fast development of deep learning, which is a branch of machine learning and statistical learning. Fully convolutional network [1] is the standard model for semantic segmentation. Conditional random fields coded as CNN [2] or RNN [3] and c...
computer science
29,303
Facial 3D Model Registration Under Occlusions With SensiblePoints-based Reinforced Hypothesis Refinement
cs.CV
Registering a 3D facial model to a 2D image under occlusion is difficult. First, not all of the detected facial landmarks are accurate under occlusions. Second, the number of reliable landmarks may not be enough to constrain the problem. We propose a method to synthesize additional points (SensiblePoints) to create pos...
computer science
29,304
Learning Dense Facial Correspondences in Unconstrained Images
cs.CV
We present a minimalistic but effective neural network that computes dense facial correspondences in highly unconstrained RGB images. Our network learns a per-pixel flow and a matchability mask between 2D input photographs of a person and the projection of a textured 3D face model. To train such a network, we generate ...
computer science
29,305
Detection of Moving Object in Dynamic Background Using Gaussian Max-Pooling and Segmentation Constrained RPCA
cs.CV
Due to its efficiency and stability, Robust Principal Component Analysis (RPCA) has been emerging as a promising tool for moving object detection. Unfortunately, existing RPCA based methods assume static or quasi-static background, and thereby they may have trouble in coping with the background scenes that exhibit a pe...
computer science
29,306
A Generative Model For Zero Shot Learning Using Conditional Variational Autoencoders
cs.CV
Zero shot learning in Image Classification refers to the setting where images from some novel classes are absent in the training data but other information such as natural language descriptions or attribute vectors of the classes are available. This setting is important in the real world since one may not be able to ob...
computer science
29,307
Unsupervised feature learning with discriminative encoder
cs.CV
In recent years, deep discriminative models have achieved extraordinary performance on supervised learning tasks, significantly outperforming their generative counterparts. However, their success relies on the presence of a large amount of labeled data. How can one use the same discriminative models for learning useful...
computer science
29,308
Blind Stereo Image Quality Assessment Inspired by Brain Sensory-Motor Fusion
cs.CV
The use of 3D and stereo imaging is rapidly increasing. Compression, transmission, and processing could degrade the quality of stereo images. Quality assessment of such images is different than their 2D counterparts. Metrics that represent 3D perception by human visual system (HVS) are expected to assess stereoscopic q...
computer science
29,309
Human Detection and Tracking for Video Surveillance A Cognitive Science Approach
cs.CV
With crimes on the rise all around the world, video surveillance is becoming more important day by day. Due to the lack of human resources to monitor this increasing number of cameras manually new computer vision algorithms to perform lower and higher level tasks are being developed. We have developed a new method inco...
computer science
29,310
Hand Gesture Real Time Paint Tool - Box
cs.CV
With current development universally in computing, now a days user interaction approaches with mouse, keyboard, touch-pens etc. are not sufficient. Directly using of hands or hand gestures as an input device is a method to attract people with providing the applications, through Machine Learning and Computer Vision. Hum...
computer science
29,311
Sushi Dish - Object detection and classification from real images
cs.CV
In conveyor belt sushi restaurants, billing is a burdened job because one has to manually count the number of dishes and identify the color of them to calculate the price. In a busy situation, there can be a mistake that customers are overcharged or under-charged. To deal with this problem, we developed a method that a...
computer science
29,312
Compressed Sensing MRI Reconstruction using a Generative Adversarial Network with a Cyclic Loss
cs.CV
Compressed Sensing MRI (CS-MRI) has provided theoretical foundations upon which the time-consuming MRI acquisition process can be accelerated. However, it primarily relies on iterative numerical solvers which still hinders their adaptation in time-critical applications. In addition, recent advances in deep neural netwo...
computer science
29,313
Machine learning methods for histopathological image analysis
cs.CV
Abundant accumulation of digital histopathological images has led to the increased demand for their analysis, such as computer-aided diagnosis using machine learning techniques. However, digital pathological images and related tasks have some issues to be considered. In this mini-review, we introduce the application of...
computer science
29,314
Non-rigid image registration using fully convolutional networks with deep self-supervision
cs.CV
We propose a novel non-rigid image registration algorithm that is built upon fully convolutional networks (FCNs) to optimize and learn spatial transformations between pairs of images to be registered. Different from most existing deep learning based image registration methods that learn spatial transformations from tra...
computer science
29,315
Hyperspectral Light Field Stereo Matching
cs.CV
In this paper, we describe how scene depth can be extracted using a hyperspectral light field capture (H-LF) system. Our H-LF system consists of a 5 x 6 array of cameras, with each camera sampling a different narrow band in the visible spectrum. There are two parts to extracting scene depth. The first part is our novel...
computer science
29,316
Dataset Augmentation with Synthetic Images Improves Semantic Segmentation
cs.CV
Although Deep Convolutional Neural Networks trained with strong pixel-level annotations have significantly pushed the performance in semantic segmentation, annotation efforts required for the creation of training data remains a roadblock for further improvements. We show that augmentation of the weakly annotated traini...
computer science
29,317
Self-Supervised Learning for Stereo Matching with Self-Improving Ability
cs.CV
Exiting deep-learning based dense stereo matching methods often rely on ground-truth disparity maps as the training signals, which are however not always available in many situations. In this paper, we design a simple convolutional neural network architecture that is able to learn to compute dense disparity maps direct...
computer science
29,318
ARIGAN: Synthetic Arabidopsis Plants using Generative Adversarial Network
cs.CV
In recent years, there has been an increasing interest in image-based plant phenotyping, applying state-of-the-art machine learning approaches to tackle challenging problems, such as leaf segmentation (a multi-instance problem) and counting. Most of these algorithms need labelled data to learn a model for the task at h...
computer science
29,319
A Reproducible Study on Remote Heart Rate Measurement
cs.CV
This paper studies the problem of reproducible research in remote photoplethysmography (rPPG). Most of the work published in this domain is assessed on privately-owned databases, making it difficult to evaluate proposed algorithms in a standard and principled manner. As a consequence, we present a new, publicly availab...
computer science
29,320
Domain-adaptive deep network compression
cs.CV
Deep Neural Networks trained on large datasets can be easily transferred to new domains with far fewer labeled examples by a process called fine-tuning. This has the advantage that representations learned in the large source domain can be exploited on smaller target domains. However, networks designed to be optimal for...
computer science
29,321
To Learn or Not to Learn Features for Deformable Registration?
cs.CV
Feature-based registration has been popular with a variety of features ranging from voxel intensity to Self-Similarity Context (SSC). In this paper, we examine the question on how features learnt using various Deep Learning (DL) frameworks can be used for deformable registration and whether this feature learning is nec...
computer science
29,322
A Nonparametric Model for Multimodal Collaborative Activities Summarization
cs.CV
Ego-centric data streams provide a unique opportunity to reason about joint behavior by pooling data across individuals. This is especially evident in urban environments teeming with human activities, but which suffer from incomplete and noisy data. Collaborative human activities exhibit common spatial, temporal, and v...
computer science
29,323
WESPE: Weakly Supervised Photo Enhancer for Digital Cameras
cs.CV
Low-end and compact mobile cameras demonstrate limited photo quality mainly due to space, hardware and budget constraints. In this work, we propose a deep learning solution that translates photos taken by cameras with limited capabilities into DSLR-quality photos automatically. We tackle this problem by introducing a w...
computer science
29,324
A Multilayer-Based Framework for Online Background Subtraction with Freely Moving Cameras
cs.CV
The exponentially increasing use of moving platforms for video capture introduces the urgent need to develop the general background subtraction algorithms with the capability to deal with the moving background. In this paper, we propose a multilayer-based framework for online background subtraction for videos captured ...
computer science
29,325
Link the head to the "beak": Zero Shot Learning from Noisy Text Description at Part Precision
cs.CV
In this paper, we study learning visual classifiers from unstructured text descriptions at part precision with no training images. We propose a learning framework that is able to connect text terms to its relevant parts and suppress connections to non-visual text terms without any part-text annotations. For instance, t...
computer science
29,326
Is human face processing a feature- or pattern-based task? Evidence using a unified computational method driven by eye movements
cs.CV
Research on human face processing using eye movements has provided evidence that we recognize face images successfully focusing our visual attention on a few inner facial regions, mainly on the eyes, nose and mouth. To understand how we accomplish this process of coding high-dimensional faces so efficiently, this paper...
computer science
29,327
Multi-View Spectral Clustering via Structured Low-Rank Matrix Factorization
cs.CV
Multi-view data clustering attracts more attention than their single view counterparts due to the fact that leveraging multiple independent and complementary information from multi-view feature spaces outperforms the single one. Multi-view Spectral Clustering aims at yielding the data partition agreement over their loc...
computer science
29,328
Multi-Modal Multi-Scale Deep Learning for Large-Scale Image Annotation
cs.CV
Large-scale image annotation is a challenging task in image content analysis, which aims to annotate each image of a very large dataset with multiple class labels. In this paper, we focus on two main issues in large-scale image annotation: 1) how to learn stronger features for multifarious images; 2) how to annotate an...
computer science
29,329
Cross-Media Similarity Evaluation for Web Image Retrieval in the Wild
cs.CV
In order to retrieve unlabeled images by textual queries, cross-media similarity computation is a key ingredient. Although novel methods are continuously introduced, little has been done to evaluate these methods together with large-scale query log analysis. Consequently, how far have these methods brought us in answer...
computer science
29,330
Learning Non-Metric Visual Similarity for Image Retrieval
cs.CV
Can a neural network learn the concept of visual similarity? In this work, this question is addressed by training a deep learning model for the specific task of measuring the similarity between a pair of pictures in content-based image retrieval datasets. Traditionally, content-based image retrieval systems rely on two...
computer science
29,331
Visualizing and Improving Scattering Networks
cs.CV
Scattering Transforms (or ScatterNets) introduced by Mallat are a promising start into creating a well-defined feature extractor to use for pattern recognition and image classification tasks. They are of particular interest due to their architectural similarity to Convolutional Neural Networks (CNNs), while requiring n...
computer science
29,332
Predicting Visual Features from Text for Image and Video Caption Retrieval
cs.CV
This paper strives to find amidst a set of sentences the one best describing the content of a given image or video. Different from existing works, which rely on a joint subspace for their image and video caption retrieval, we propose to do so in a visual space exclusively. Apart from this conceptual novelty, we contrib...
computer science
29,333
Towards social pattern characterization in egocentric photo-streams
cs.CV
Following the increasingly popular trend of social interaction analysis in egocentric vision, this manuscript presents a comprehensive study for automatic social pattern characterization of a wearable photo-camera user, by relying on the visual analysis of egocentric photo-streams. The proposed framework consists of th...
computer science
29,334
Dense Face Alignment
cs.CV
Face alignment is a classic problem in the computer vision field. Previous works mostly focus on sparse alignment with a limited number of facial landmark points, i.e., facial landmark detection. In this paper, for the first time, we aim at providing a very dense 3D alignment for large-pose face images. To achieve this...
computer science
29,335
The Devil is in the Tails: Fine-grained Classification in the Wild
cs.CV
The world is long-tailed. What does this mean for computer vision and visual recognition? The main two implications are (1) the number of categories we need to consider in applications can be very large, and (2) the number of training examples for most categories can be very small. Current visual recognition algorithms...
computer science
29,336
6D Object Pose Estimation with Depth Images: A Seamless Approach for Robotic Interaction and Augmented Reality
cs.CV
To determine the 3D orientation and 3D location of objects in the surroundings of a camera mounted on a robot or mobile device, we developed two powerful algorithms in object detection and temporal tracking that are combined seamlessly for robotic perception and interaction as well as Augmented Reality (AR). A separate...
computer science
29,337
Subspace Segmentation by Successive Approximations: A Method for Low-Rank and High-Rank Data with Missing Entries
cs.CV
We propose a method to reconstruct and cluster incomplete high-dimensional data lying in a union of low-dimensional subspaces. Exploring the sparse representation model, we jointly estimate the missing data while imposing the intrinsic subspace structure. Since we have a non-convex problem, we propose an iterative meth...
computer science
29,338
Leveraging multiple datasets for deep leaf counting
cs.CV
The number of leaves a plant has is one of the key traits (phenotypes) describing its development and growth. Here, we propose an automated, deep learning based approach for counting leaves in model rosette plants. While state-of-the-art results on leaf counting with deep learning methods have recently been reported, t...
computer science
29,339
Squeeze-and-Excitation Networks
cs.CV
Convolutional neural networks are built upon the convolution operation, which extracts informative features by fusing spatial and channel-wise information together within local receptive fields. In order to boost the representational power of a network, much existing work has shown the benefits of enhancing spatial enc...
computer science
29,340
Improving Landmark Localization with Semi-Supervised Learning
cs.CV
We present two techniques to improve landmark localization from partially annotated datasets. Our primary goal is to leverage the common situation where precise landmark locations are only provided for a small data subset, but where class labels for classification tasks related to the landmarks are more abundantly avai...
computer science
29,341
Deep Ordinal Ranking for Multi-Category Diagnosis of Alzheimer's Disease using Hippocampal MRI data
cs.CV
Increasing effort in brain image analysis has been dedicated to early diagnosis of Alzheimer's disease (AD) based on neuroimaging data. Most existing studies have been focusing on binary classification problems, e.g., distinguishing AD patients from normal control (NC) elderly or mild cognitive impairment (MCI) individ...
computer science
29,342
Dynamic Multiscale Tree Learning Using Ensemble Strong Classifiers for Multi-label Segmentation of Medical Images with Lesions
cs.CV
We introduce a dynamic multiscale tree (DMT) architecture that learns how to leverage the strengths of different existing classifiers for supervised multi-label image segmentation. Unlike previous works that simply aggregate or cascade classifiers for addressing image segmentation and labeling tasks, we propose to embe...
computer science
29,343
PageNet: Page Boundary Extraction in Historical Handwritten Documents
cs.CV
When digitizing a document into an image, it is common to include a surrounding border region to visually indicate that the entire document is present in the image. However, this border should be removed prior to automated processing. In this work, we present a deep learning based system, PageNet, which identifies the ...
computer science
29,344
Exploring and Exploiting Diversity for Image Segmentation
cs.CV
Semantic image segmentation is an important computer vision task that is difficult because it consists of both recognition and segmentation. The task is often cast as a structured output problem on an exponentially large output-space, which is typically modeled by a discrete probabilistic model. The best segmentation i...
computer science
29,345
Using Cross-Model EgoSupervision to Learn Cooperative Basketball Intention
cs.CV
We present a first-person method for cooperative basketball intention prediction: we predict with whom the camera wearer will cooperate in the near future from unlabeled first-person images. This is a challenging task that requires inferring the camera wearer's visual attention, and decoding the social cues of other pl...
computer science
29,346
Deep Convolutional Neural Network for Age Estimation based on VGG-Face Model
cs.CV
Automatic age estimation from real-world and unconstrained face images is rapidly gaining importance. In our proposed work, a deep CNN model that was trained on a database for face recognition task is used to estimate the age information on the Adience database. This paper has three significant contributions in this fi...
computer science
29,347
Group-level Emotion Recognition using Transfer Learning from Face Identification
cs.CV
In this paper, we describe our algorithmic approach, which was used for submissions in the fifth Emotion Recognition in the Wild (EmotiW 2017) group-level emotion recognition sub-challenge. We extracted feature vectors of detected faces using the Convolutional Neural Network trained for face identification task, rather...
computer science
29,348
A Compact Kernel Approximation for 3D Action Recognition
cs.CV
3D action recognition was shown to benefit from a covariance representation of the input data (joint 3D positions). A kernel machine feed with such feature is an effective paradigm for 3D action recognition, yielding state-of-the-art results. Yet, the whole framework is affected by the well-known scalability issue. In ...
computer science
29,349
Blind image deblurring using class-adapted image priors
cs.CV
Blind image deblurring (BID) is an ill-posed inverse problem, usually addressed by imposing prior knowledge on the (unknown) image and on the blurring filter. Most of the work on BID has focused on natural images, using image priors based on statistical properties of generic natural images. However, in many application...
computer science
29,350
Detecting animals in African Savanna with UAVs and the crowds
cs.CV
Unmanned aerial vehicles (UAVs) offer new opportunities for wildlife monitoring, with several advantages over traditional field-based methods. They have readily been used to count birds, marine mammals and large herbivores in different environments, tasks which are routinely performed through manual counting in large c...
computer science
29,351
Scene Text Recognition with Sliding Convolutional Character Models
cs.CV
Scene text recognition has attracted great interests from the computer vision and pattern recognition community in recent years. State-of-the-art methods use concolutional neural networks (CNNs), recurrent neural networks with long short-term memory (RNN-LSTM) or the combination of them. In this paper, we investigate t...
computer science
29,352
CNN-Based Projected Gradient Descent for Consistent Image Reconstruction
cs.CV
We present a new method for image reconstruction which replaces the projector in a projected gradient descent (PGD) with a convolutional neural network (CNN). CNNs trained as high-dimensional (image-to-image) regressors have recently been used to efficiently solve inverse problems in imaging. However, these approaches ...
computer science
29,353
Towards Automated Cadastral Boundary Delineation from UAV Data
cs.CV
Unmanned aerial vehicles (UAV) are evolving as an alternative tool to acquire land tenure data. UAVs can capture geospatial data at high quality and resolution in a cost-effective, transparent and flexible manner, from which visible land parcel boundaries, i.e., cadastral boundaries are delineable. This delineation is ...
computer science
29,354
Soft Proposal Networks for Weakly Supervised Object Localization
cs.CV
Weakly supervised object localization remains challenging, where only image labels instead of bounding boxes are available during training. Object proposal is an effective component in localization, but often computationally expensive and incapable of joint optimization with some of the remaining modules. In this paper...
computer science
29,355
An inner-loop free solution to inverse problems using deep neural networks
cs.CV
We propose a new method that uses deep learning techniques to accelerate the popular alternating direction method of multipliers (ADMM) solution for inverse problems. The ADMM updates consist of a proximity operator, a least squares regression that includes a big matrix inversion, and an explicit solution for updating ...
computer science
29,356
Synthetic Medical Images from Dual Generative Adversarial Networks
cs.CV
Currently there is strong interest in data-driven approaches to medical image classification. However, medical imaging data is scarce, expensive, and fraught with legal concerns regarding patient privacy. Typical consent forms only allow for patient data to be used in medical journals or education, meaning the majority...
computer science
29,357
Polar Transformer Networks
cs.CV
Convolutional neural networks (CNNs) are inherently equivariant to translation. Efforts to embed other forms of equivariance have concentrated solely on rotation. We expand the notion of equivariance in CNNs through the Polar Transformer Network (PTN). PTN combines ideas from the Spatial Transformer Network (STN) and c...
computer science
29,358
Learning Dilation Factors for Semantic Segmentation of Street Scenes
cs.CV
Contextual information is crucial for semantic segmentation. However, finding the optimal trade-off between keeping desired fine details and at the same time providing sufficiently large receptive fields is non trivial. This is even more so, when objects or classes present in an image significantly vary in size. Dilate...
computer science
29,359
Label Denoising Adversarial Network (LDAN) for Inverse Lighting of Face Images
cs.CV
Lighting estimation from face images is an important task and has applications in many areas such as image editing, intrinsic image decomposition, and image forgery detection. We propose to train a deep Convolutional Neural Network (CNN) to regress lighting parameters from a single face image. Lacking massive ground tr...
computer science
29,360
Image Splicing Localization Using A Multi-Task Fully Convolutional Network (MFCN)
cs.CV
In this work, we propose a technique that utilizes a fully convolutional network (FCN) to localize image splicing attacks. We first evaluated a single-task FCN (SFCN) trained only on the surface label. Although the SFCN is shown to provide superior performance over existing methods, it still provides a coarse localizat...
computer science
29,361
Towards high-throughput 3D insect capture for species discovery and diagnostics
cs.CV
Digitisation of natural history collections not only preserves precious information about biological diversity, it also enables us to share, analyse, annotate and compare specimens to gain new insights. High-resolution, full-colour 3D capture of biological specimens yields color and geometry information complementary t...
computer science
29,362
Capturing natural-colour 3D models of insects for species discovery
cs.CV
Collections of biological specimens are fundamental to scientific understanding and characterization of natural diversity. This paper presents a system for liberating useful information from physical collections by bringing specimens into the digital domain so they can be more readily shared, analyzed, annotated and co...
computer science
29,363
Focusing Attention: Towards Accurate Text Recognition in Natural Images
cs.CV
Scene text recognition has been a hot research topic in computer vision due to its various applications. The state of the art is the attention-based encoder-decoder framework that learns the mapping between input images and output sequences in a purely data-driven way. However, we observe that existing attention-based ...
computer science
29,364
Deep Embedding Convolutional Neural Network for Synthesizing CT Image from T1-Weighted MR Image
cs.CV
Recently, more and more attention is drawn to the field of medical image synthesis across modalities. Among them, the synthesis of computed tomography (CT) image from T1-weighted magnetic resonance (MR) image is of great importance, although the mapping between them is highly complex due to large gaps of appearances of...
computer science
29,365
An unsupervised long short-term memory neural network for event detection in cell videos
cs.CV
We propose an automatic unsupervised cell event detection and classification method, which expands convolutional Long Short-Term Memory (LSTM) neural networks, for cellular events in cell video sequences. Cells in images that are captured from various biomedical applications usually have different shapes and motility, ...
computer science
29,366
Rotational Subgroup Voting and Pose Clustering for Robust 3D Object Recognition
cs.CV
It is possible to associate a highly constrained subset of relative 6 DoF poses between two 3D shapes, as long as the local surface orientation, the normal vector, is available at every surface point. Local shape features can be used to find putative point correspondences between the models due to their ability to hand...
computer science
29,367
FingerNet: An Unified Deep Network for Fingerprint Minutiae Extraction
cs.CV
Minutiae extraction is of critical importance in automated fingerprint recognition. Previous works on rolled/slap fingerprints failed on latent fingerprints due to noisy ridge patterns and complex background noises. In this paper, we propose a new way to design deep convolutional network combining domain knowledge and ...
computer science
29,368
Sparsity-Based Super Resolution for SEM Images
cs.CV
The scanning electron microscope (SEM) produces an image of a sample by scanning it with a focused beam of electrons. The electrons interact with the atoms in the sample, which emit secondary electrons that contain information about the surface topography and composition. The sample is scanned by the electron beam poin...
computer science
29,369
Towards a Dedicated Computer Vision Tool set for Crowd Simulation Models
cs.CV
As the population of world is increasing, and even more concentrated in urban areas, ensuring public safety is becoming a taunting job for security personnel and crowd managers. Mass events like sports, festivals, concerts, political gatherings attract thousand of people in a constraint environment,therefore adequate s...
computer science
29,370
Deep Galaxy: Classification of Galaxies based on Deep Convolutional Neural Networks
cs.CV
In this paper, a deep convolutional neural network architecture for galaxies classification is presented. The galaxy can be classified based on its features into main three categories Elliptical, Spiral, and Irregular. The proposed deep galaxies architecture consists of 8 layers, one main convolutional layer for featur...
computer science
29,371
A Survey of Efficient Regression of General-Activity Human Poses from Depth Images
cs.CV
This paper presents a comprehensive review on regression-based method for human pose estimation. The problem of human pose estimation has been intensively studied and enabled many application from entertainment to training. Traditional methods often rely on color image only which cannot completely ambiguity of joint 3D...
computer science
29,372
Complete End-To-End Low Cost Solution To a 3D Scanning System with Integrated Turntable
cs.CV
3D reconstruction is a technique used in computer vision which has a wide range of applications in areas like object recognition, city modelling, virtual reality, physical simulations, video games and special effects. Previously, to perform a 3D reconstruction, specialized hardwares were required. Such systems were oft...
computer science
29,373
Medical Image Analysis using Convolutional Neural Networks: A Review
cs.CV
Medical image analysis is the science of analyzing or solving medical problems using different image analysis techniques for affective and efficient extraction of information. It has emerged as one of the top research area in the field of engineering and medicine. Recent years have witnessed rapid use of machine learni...
computer science
29,374
A Geometric Approach to Harmonic Color Palette Design
cs.CV
We address the problem of finding harmonic colors, this problem has many applications, from fashion to industrial design. In order to solve this problem we consider that colors follow normal distributions in tone (chroma and lightness) and hue. The proposed approach relies in the CIE standard for representing colors an...
computer science
29,375
Adaptive Real-Time Removal of Impulse Noise in Medical Images
cs.CV
Noise is an important factor that degrades the quality of medical images. Impulse noise is a common noise, which is caused by malfunctioning of sensor elements or errors in the transmission of images. In medical images due to presence of white foreground and black background, many pixels have intensities similar to imp...
computer science
29,376
Monocular Navigation in Large Scale Dynamic Environments
cs.CV
We present a processing technique for a robust reconstruction of motion properties for single points in large scale, dynamic environments. We assume that the acquisition camera is moving and that there are other independently moving agents in a large environment, like road scenarios. The separation of direction and mag...
computer science
29,377
PWC-Net: CNNs for Optical Flow Using Pyramid, Warping, and Cost Volume
cs.CV
We present a compact but effective CNN model for optical flow, called PWC-Net. PWC-Net has been designed according to simple and well-established principles: pyramidal processing, warping, and the use of a cost volume. Cast in a learnable feature pyramid, PWC-Net uses the current optical flow estimate to warp the CNN f...
computer science
29,378
End-to-end Face Detection and Cast Grouping in Movies Using Erdős-Rényi Clustering
cs.CV
We present an end-to-end system for detecting and clustering faces by identity in full-length movies. Unlike works that start with a predefined set of detected faces, we consider the end-to-end problem of detection and clustering together. We make three separate contributions. First, we combine a state-of-the-art face ...
computer science
29,379
Local Neighborhood Intensity Pattern: A new texture feature descriptor for image retrieval
cs.CV
In this paper, a new texture descriptor based on the local neighborhood intensity difference is proposed for content based image retrieval (CBIR). For computation of texture features like Local Binary Pattern (LBP), the center pixel in a 3*3 window of an image is compared with all the remaining neighbors, one pixel at ...
computer science
29,380
Fine-grained Recognition in the Wild: A Multi-Task Domain Adaptation Approach
cs.CV
While fine-grained object recognition is an important problem in computer vision, current models are unlikely to accurately classify objects in the wild. These fully supervised models need additional annotated images to classify objects in every new scenario, a task that is infeasible. However, sources such as e-commer...
computer science
29,381
Fine-Grained Car Detection for Visual Census Estimation
cs.CV
Targeted socioeconomic policies require an accurate understanding of a country's demographic makeup. To that end, the United States spends more than 1 billion dollars a year gathering census data such as race, gender, education, occupation and unemployment rates. Compared to the traditional method of collecting surveys...
computer science
29,382
DeepFeat: A Bottom Up and Top Down Saliency Model Based on Deep Features of Convolutional Neural Nets
cs.CV
A deep feature based saliency model (DeepFeat) is developed to leverage the understanding of the prediction of human fixations. Traditional saliency models often predict the human visual attention relying on few level image cues. Although such models predict fixations on a variety of image complexities, their approache...
computer science
29,383
Deep Subspace Clustering Networks
cs.CV
We present a novel deep neural network architecture for unsupervised subspace clustering. This architecture is built upon deep auto-encoders, which non-linearly map the input data into a latent space. Our key idea is to introduce a novel self-expressive layer between the encoder and the decoder to mimic the "self-expre...
computer science
29,384
Extreme Sparse Multinomial Logistic Regression: A Fast and Robust Framework for Hyperspectral Image Classification
cs.CV
Although the sparse multinomial logistic regression (SMLR) has provided a useful tool for sparse classification, it suffers from inefficacy in dealing with high dimensional features and manually set initial regressor values. This has significantly constrained its applications for hyperspectral image (HSI) classificatio...
computer science
29,385
A Novel Low-Complexity Framework in Ultra-Wideband Imaging for Breast Cancer Detection
cs.CV
In this research work, a novel framework is pro- posed as an efficient successor to traditional imaging methods for breast cancer detection in order to decrease the computational complexity. In this framework, the breast is devided into seg- ments in an iterative process and in each iteration, the one having the most p...
computer science
29,386
Learning to Segment Breast Biopsy Whole Slide Images
cs.CV
We trained and applied an encoder-decoder model to semantically segment breast biopsy images into biologically meaningful tissue labels. Since conventional encoder-decoder networks cannot be applied directly on large biopsy images and the different sized structures in biopsies present novel challenges, we propose four ...
computer science
29,387
Segmentation and Classification of Cine-MR Images Using Fully Convolutional Networks and Handcrafted Features
cs.CV
Three-dimensional cine-MRI is of crucial importance for assessing the cardiac function. Features that describe the anatomy and function of cardiac structures (e.g. Left Ventricle (LV), Right Ventricle (RV), and Myocardium(MC)) are known to have significant diagnostic value and can be computed from 3D cine-MR images. Ho...
computer science
29,388
Best Practices in Convolutional Networks for Forward-Looking Sonar Image Recognition
cs.CV
Convolutional Neural Networks (CNN) have revolutionized perception for color images, and their application to sonar images has also obtained good results. But in general CNNs are difficult to train without a large dataset, need manual tuning of a considerable number of hyperparameters, and require many careful decision...
computer science
29,389
Calibration of depth cameras using denoised depth images
cs.CV
Depth sensing devices have created various new applications in scientific and commercial research with the advent of Microsoft Kinect and PMD (Photon Mixing Device) cameras. Most of these applications require the depth cameras to be pre-calibrated. However, traditional calibration methods using a checkerboard do not wo...
computer science
29,390
Locating 3D Object Proposals: A Depth-Based Online Approach
cs.CV
2D object proposals, quickly detected regions in an image that likely contain an object of interest, are an effective approach for improving the computational efficiency and accuracy of object detection in color images. In this work, we propose a novel online method that generates 3D object proposals in a RGB-D video s...
computer science
29,391
Method to Detect Eye Position Noise from Video-Oculography when Detection of Pupil or Corneal Reflection Position Fails
cs.CV
We present software to detect noise in eye position signals from video-based eye-tracking systems that depend on accurate pupil and corneal reflection position estimation. When such systems transiently fail to properly detect the pupil or the corneal reflection due to occlusion from eyelids, eye lashes or various shado...
computer science
29,392
Vessel Segmentation and Catheter Detection in X-Ray Angiograms Using Superpixels
cs.CV
Coronary artery disease (CAD) is the leading causes of death around the world. One of the most common imaging methods for diagnosing this disease is X-ray angiography. Diagnosing using these images is usually challenging due to non-uniform illumination, low contrast, presence of other body tissues, presence of catheter...
computer science
29,393
An Adaptive Sampling Scheme to Efficiently Train Fully Convolutional Networks for Semantic Segmentation
cs.CV
Deep convolutional neural networks (CNNs) have shown excellent performance in object recognition tasks and dense classification problems such as semantic segmentation. However, training deep neural networks on large and sparse datasets is still challenging and can require large amounts of computation and memory. In thi...
computer science
29,394
Detecting Hands in Egocentric Videos: Towards Action Recognition
cs.CV
Recently, there has been a growing interest in analyzing human daily activities from data collected by wearable cameras. Since the hands are involved in a vast set of daily tasks, detecting hands in egocentric images is an important step towards the recognition of a variety of egocentric actions. However, besides extre...
computer science
29,395
Improving Heterogeneous Face Recognition with Conditional Adversarial Networks
cs.CV
Heterogeneous face recognition between color image and depth image is a much desired capacity for real world applications where shape information is looked upon as merely involved in gallery. In this paper, we propose a cross-modal deep learning method as an effective and efficient workaround for this challenge. Specif...
computer science
29,396
Learning a Dilated Residual Network for SAR Image Despeckling
cs.CV
In this paper, to break the limit of the traditional linear models for synthetic aperture radar (SAR) image despeckling, we propose a novel deep learning approach by learning a non-linear end-to-end mapping between the noisy and clean SAR images with a dilated residual network (SAR-DRN). SAR-DRN is based on dilated con...
computer science
29,397
Graph Scaling Cut with L1-Norm for Classification of Hyperspectral Images
cs.CV
In this paper, we propose an L1 normalized graph based dimensionality reduction method for Hyperspectral images, called as L1-Scaling Cut (L1-SC). The underlying idea of this method is to generate the optimal projection matrix by retaining the original distribution of the data. Though L2-norm is generally preferred for...
computer science
29,398
Joint Calibration of Panoramic Camera and Lidar Based on Supervised Learning
cs.CV
In view of contemporary panoramic camera-laser scanner system, the traditional calibration method is not suitable for panoramic cameras whose imaging model is extremely nonlinear. The method based on statistical optimization has the disadvantage that the requirement of the number of laser scanner's channels is relative...
computer science
29,399
Model Distillation with Knowledge Transfer from Face Classification to Alignment and Verification
cs.CV
Knowledge distillation is a potential solution for model compression. The idea is to make a small student network imitate the target of a large teacher network, then the student network can be competitive to the teacher one. Most previous studies focus on model distillation in the classification task, where they propos...
computer science
29,400
How to Train Triplet Networks with 100K Identities?
cs.CV
Training triplet networks with large-scale data is challenging in face recognition. Due to the number of possible triplets explodes with the number of samples, previous studies adopt the online hard negative mining(OHNM) to handle it. However, as the number of identities becomes extremely large, the training will suffe...
computer science
29,401
Sequential 3D U-Nets for Biologically-Informed Brain Tumor Segmentation
cs.CV
Deep learning has quickly become the weapon of choice for brain lesion segmentation. However, few existing algorithms pre-configure any biological context of their chosen segmentation tissues, and instead rely on the neural network's optimizer to develop such associations de novo. We present a novel method for applying...
computer science