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30,102
Image-Image Domain Adaptation with Preserved Self-Similarity and Domain-Dissimilarity for Person Re-identification
cs.CV
Person re-identification (re-ID) models trained on one domain often fail to generalize well to another. In our attempt, we present a "learning via translation" framework. In the baseline, we translate the labeled images from source to target domain in an unsupervised manner. We then train re-ID models with the translat...
computer science
30,103
DeblurGAN: Blind Motion Deblurring Using Conditional Adversarial Networks
cs.CV
We present an end-to-end learning approach for motion deblurring, which is based on conditional GAN and content loss. It improves the state-of-the art in terms of peak signal-to-noise ratio, structural similarity measure and by visual appearance. The quality of the deblurring model is also evaluated in a novel way on a...
computer science
30,104
Diverse and Accurate Image Description Using a Variational Auto-Encoder with an Additive Gaussian Encoding Space
cs.CV
This paper explores image caption generation using conditional variational auto-encoders (CVAEs). Standard CVAEs with a fixed Gaussian prior yield descriptions with too little variability. Instead, we propose two models that explicitly structure the latent space around $K$ components corresponding to different types of...
computer science
30,105
Robust Non-line-of-sight Imaging with Single Photon Detectors
cs.CV
Imaging objects that are obscured by scattering and occlusion is an important challenge for many applications. For example, navigation and mapping capabilities of autonomous vehicles could be improved, vision in harsh weather conditions or under water could be facilitated, or search and rescue scenarios could become mo...
computer science
30,106
Spectral-Spatial Feature Extraction and Classification by ANN Supervised with Center Loss in Hyperspectral Imagery
cs.CV
In this paper, we propose a spectral-spatial feature extraction and classification framework based on artificial neuron network (ANN) in the context of hyperspectral imagery. With limited labeled samples, only spectral information is exploited for training and spatial context is integrated posteriorly at the testing st...
computer science
30,107
Let Features Decide for Themselves: Feature Mask Network for Person Re-identification
cs.CV
Person re-identification aims at establishing the identity of a pedestrian from a gallery that contains images of multiple people obtained from a multi-camera system. Many challenges such as occlusions, drastic lighting and pose variations across the camera views, indiscriminate visual appearances, cluttered background...
computer science
30,108
Adversarial Attacks Beyond the Image Space
cs.CV
Generating adversarial examples is an intriguing problem and an important way of understanding the working mechanism of deep neural networks. Recently, it has attracted a lot of attention in the computer vision community. Most existing approaches generated perturbations in image space, i.e., each pixel can be modified ...
computer science
30,109
Block-Cyclic Stochastic Coordinate Descent for Deep Neural Networks
cs.CV
We present a stochastic first-order optimization algorithm, named BCSC, that adds a cyclic constraint to stochastic block-coordinate descent. It uses different subsets of the data to update different subsets of the parameters, thus limiting the detrimental effect of outliers in the training set. Empirical tests in benc...
computer science
30,110
Stochastic metamorphosis with template uncertainties
cs.CV
In this paper, we investigate two stochastic perturbations of the metamorphosis equations of image analysis, in the geometrical context of the Euler-Poincar\'e theory. In the metamorphosis of images, the Lie group of diffeomorphisms deforms a template image that is undergoing its own internal dynamics as it deforms. Th...
computer science
30,111
Tracking in Aerial Hyperspectral Videos using Deep Kernelized Correlation Filters
cs.CV
Hyperspectral imaging holds enormous potential to improve the state-of-the-art in aerial vehicle tracking with low spatial and temporal resolutions. Recently, adaptive multi-modal hyperspectral sensors, controlled by Dynamic Data Driven Applications Systems (DDDAS) methodology, have attracted growing interest due to th...
computer science
30,112
MegDet: A Large Mini-Batch Object Detector
cs.CV
The improvements in recent CNN-based object detection works, from R-CNN [11], Fast/Faster R-CNN [10, 31] to recent Mask R-CNN [14] and RetinaNet [24], mainly come from new network, new framework, or novel loss design. But mini-batch size, a key factor in the training, has not been well studied. In this paper, we propos...
computer science
30,113
Optical Character Recognition (OCR) for Telugu: Database, Algorithm and Application
cs.CV
Telugu is a Dravidian language spoken by more than 80 million people worldwide. The optical character recognition (OCR) of the Telugu script has wide ranging applications including education, health-care, administration etc. The beautiful Telugu script however is very different from Germanic scripts like English and Ge...
computer science
30,114
Face Attention Network: An Effective Face Detector for the Occluded Faces
cs.CV
The performance of face detection has been largely improved with the development of convolutional neural network. However, the occlusion issue due to mask and sunglasses, is still a challenging problem. The improvement on the recall of these occluded cases usually brings the risk of high false positives. In this paper,...
computer science
30,115
Light-Head R-CNN: In Defense of Two-Stage Object Detector
cs.CV
In this paper, we first investigate why typical two-stage methods are not as fast as single-stage, fast detectors like YOLO and SSD. We find that Faster R-CNN and R-FCN perform an intensive computation after or before RoI warping. Faster R-CNN involves two fully connected layers for RoI recognition, while R-FCN produce...
computer science
30,116
Zero-shot Learning via Shared-Reconstruction-Graph Pursuit
cs.CV
Zero-shot learning (ZSL) aims to recognize objects from novel unseen classes without any training data. Recently, structure-transfer based methods are proposed to implement ZSL by transferring structural knowledge from the semantic embedding space to image feature space to classify testing images. However, we observe t...
computer science
30,117
Detection of Tooth caries in Bitewing Radiographs using Deep Learning
cs.CV
We develop a Computer Aided Diagnosis (CAD) system, which enhances the performance of dentists in detecting wide range of dental caries. The CAD System achieves this by acting as a second opinion for the dentists with way higher sensitivity on the task of detecting cavities than the dentists themselves. We develop anno...
computer science
30,118
Cascaded Pyramid Network for Multi-Person Pose Estimation
cs.CV
The topic of multi-person pose estimation has been largely improved recently, especially with the development of convolutional neural network. However, there still exist a lot of challenging cases, such as occluded keypoints, invisible keypoints and complex background, which cannot be well addressed. In this paper, we ...
computer science
30,119
Memory Based Online Learning of Deep Representations from Video Streams
cs.CV
We present a novel online unsupervised method for face identity learning from video streams. The method exploits deep face descriptors together with a memory based learning mechanism that takes advantage of the temporal coherence of visual data. Specifically, we introduce a discriminative feature matching solution base...
computer science
30,120
Attentive Explanations: Justifying Decisions and Pointing to the Evidence (Extended Abstract)
cs.CV
Deep models are the defacto standard in visual decision problems due to their impressive performance on a wide array of visual tasks. On the other hand, their opaqueness has led to a surge of interest in explainable systems. In this work, we emphasize the importance of model explanation in various forms such as visual ...
computer science
30,121
Pixel-wise object tracking
cs.CV
In this paper, we propose a novel pixel-wise visual object tracking framework that can track any anonymous object in a noisy background. The framework consists of two submodels, a global attention model and a local segmentation model. The global model generates a region of interests (ROI) that the object may lie in the...
computer science
30,122
V2V-PoseNet: Voxel-to-Voxel Prediction Network for Accurate 3D Hand and Human Pose Estimation from a Single Depth Map
cs.CV
Most of the existing deep learning-based methods for 3D hand and human pose estimation from a single depth map are based on a common framework that takes a 2D depth map and directly regresses the 3D coordinates of keypoints, such as hand or human body joints, via 2D convolutional neural networks (CNNs). The first weakn...
computer science
30,123
Disentangling Factors of Variation by Mixing Them
cs.CV
We propose an unsupervised approach to learn image representations that consist of disentangled factors of variation. A factor of variation corresponds to an image attribute that can be discerned consistently across a set of images, such as the pose or color of objects. Our disentangled representation consists of a con...
computer science
30,124
Robust Seed Mask Generation for Interactive Image Segmentation
cs.CV
In interactive medical image segmentation, anatomical structures are extracted from reconstructed volumetric images. The first iterations of user interaction traditionally consist of drawing pictorial hints as an initial estimate of the object to extract. Only after this time consuming first phase, the efficient select...
computer science
30,125
Joint Object Category and 3D Pose Estimation from 2D Images
cs.CV
2D object detection is the task of finding (i) what objects are present in an image and (ii) where they are located, while 3D pose estimation is the task of finding the pose of these objects in 3D space. State-of-the-art methods for solving these tasks follow a two-stage approach where a 3D pose estimation system is ap...
computer science
30,126
Self-Similarity Based Time Warping
cs.CV
In this work, we explore the problem of aligning two time-ordered point clouds which are spatially transformed and re-parameterized versions of each other. This has a diverse array of applications such as cross modal time series synchronization (e.g. MOCAP to video) and alignment of discretized curves in images. Most o...
computer science
30,127
Dropping Activation Outputs with Localized First-layer Deep Network for Enhancing User Privacy and Data Security
cs.CV
Deep learning methods can play a crucial role in anomaly detection, prediction, and supporting decision making for applications like personal health-care, pervasive body sensing, etc. However, current architecture of deep networks suffers the privacy issue that users need to give out their data to the model (typically ...
computer science
30,128
On Nearest Neighbors in Non Local Means Denoising
cs.CV
To denoise a reference patch, the Non-Local-Means denoising filter processes a set of neighbor patches. Few Nearest Neighbors (NN) are used to limit the computational burden of the algorithm. Here here we show analytically that the NN approach introduces a bias in the denoised patch, and we propose a different neighbor...
computer science
30,129
Knowledge Concentration: Learning 100K Object Classifiers in a Single CNN
cs.CV
Fine-grained image labels are desirable for many computer vision applications, such as visual search or mobile AI assistant. These applications rely on image classification models that can produce hundreds of thousands (e.g. 100K) of diversified fine-grained image labels on input images. However, training a network at ...
computer science
30,130
$S^4$Net: Single Stage Salient-Instance Segmentation
cs.CV
In this paper, we consider an interesting vision problem---salient instance segmentation. Other than producing approximate bounding boxes, our network also outputs high-quality instance-level segments. Taking into account the category-independent property of each target, we design a single stage salient instance segmen...
computer science
30,131
A deep learning-based method for relative location prediction in CT scan images
cs.CV
Relative location prediction in computed tomography (CT) scan images is a challenging problem. In this paper, a regression model based on one-dimensional convolutional neural networks is proposed to determine the relative location of a CT scan image both robustly and precisely. A public dataset is employed to validate ...
computer science
30,132
Multi-Image Semantic Matching by Mining Consistent Features
cs.CV
This work proposes a multi-image matching method to estimate semantic correspondences across multiple images. In contrast to the previous methods that optimize all pairwise correspondences, the proposed method identifies and matches only a sparse set of reliable features in the image collection. In this way, the propos...
computer science
30,133
Proximal Alternating Direction Network: A Globally Converged Deep Unrolling Framework
cs.CV
Deep learning models have gained great success in many real-world applications. However, most existing networks are typically designed in heuristic manners, thus lack of rigorous mathematical principles and derivations. Several recent studies build deep structures by unrolling a particular optimization model that invol...
computer science
30,134
Fully Convolutional Neural Networks for Page Segmentation of Historical Document Images
cs.CV
We propose a high-performance fully convolutional neural network (FCN) for historical document segmentation that is designed to process a single page in one step. The advantage of this model beside its speed is its ability to directly learn from raw pixels instead of using preprocessing steps e. g. feature computation ...
computer science
30,135
Residual Parameter Transfer for Deep Domain Adaptation
cs.CV
The goal of Deep Domain Adaptation is to make it possible to use Deep Nets trained in one domain where there is enough annotated training data in another where there is little or none. Most current approaches have focused on learning feature representations that are invariant to the changes that occur when going from o...
computer science
30,136
Total Variation-Based Dense Depth from Multi-Camera Array
cs.CV
Multi-Camera arrays are increasingly employed in both consumer and industrial applications, and various passive techniques are documented to estimate depth from such camera arrays. Current depth estimation methods provide useful estimations of depth in an imaged scene but are often impractical due to significant comput...
computer science
30,137
The Application of Preconditioned Alternating Direction Method of Multipliers in Depth from Focal Stack
cs.CV
Post capture refocusing effect in smartphone cameras is achievable by using focal stacks. However, the accuracy of this effect is totally dependent on the combination of the depth layers in the stack. The accuracy of the extended depth of field effect in this application can be improved significantly by computing an ac...
computer science
30,138
Repulsion Loss: Detecting Pedestrians in a Crowd
cs.CV
Detecting individual pedestrians in a crowd remains a challenging problem since the pedestrians often gather together and occlude each other in real-world scenarios. In this paper, we first explore how a state-of-the-art pedestrian detector is harmed by crowd occlusion via experimentation, providing insights into the c...
computer science
30,139
Receptive Field Block Net for Accurate and Fast Object Detection
cs.CV
Current top-performing object detectors depend on deep CNN backbones, such as ResNet-101 and Inception, benefiting from their powerful feature representation but suffering from high computational cost. Conversely, some lightweight model based detectors fulfil real time processing, while their accuracies are often criti...
computer science
30,140
Efficient Multi-Person Pose Estimation with Provable Guarantees
cs.CV
Multi-person pose estimation (MPPE) in natural images is key to the meaningful use of visual data in many fields including movement science, security, and rehabilitation. In this paper we tackle MPPE with a bottom-up approach, starting with candidate detections of body parts from a convolutional neural network (CNN) an...
computer science
30,141
Universal Denoising Networks : A Novel CNN-based Network Architecture for Image Denoising
cs.CV
We design a novel network architecture for learning discriminative image models that are employed to efficiently tackle the problem of grayscale and color image denoising. Based on the proposed architecture, we introduce two different variants. The first network involves convolutional layers as a core component, while ...
computer science
30,142
Efficient Implementation of a Recognition System Using the Cortex Ventral Stream Model
cs.CV
In this paper, an efficient implementation for a recognition system based on the original HMAX model of the visual cortex is proposed. Various optimizations targeted to increase accuracy at the so-called layers S1, C1, and S2 of the HMAX model are proposed. At layer S1, all unimportant information such as illumination ...
computer science
30,143
A smartphone application to measure the quality of pest control spraying machines via image analysis
cs.CV
The need for higher agricultural productivity has demanded the intensive use of pesticides. However, their correct use depends on assessment methods that can accurately predict how well the pesticides' spraying covered the intended crop region. Some methods have been proposed in the literature, but their high cost and ...
computer science
30,144
Discussion among Different Methods of Updating Model Filter in Object Tracking
cs.CV
Discriminative correlation filters (DCF) have recently shown excellent performance in visual object tracking area. In this paper, we summarize the methods of updating model filter from discriminative correlation filter (DCF) based tracking algorithms and analyzes similarities and differences among these methods. We ded...
computer science
30,145
Robust Object Tracking Based on Self-adaptive Search Area
cs.CV
Discriminative correlation filter (DCF) based trackers have recently achieved excellent performance with great computational efficiency. However, DCF based trackers suffer boundary effects, which result in the unstable performance in challenging situations exhibiting fast motion. In this paper, we propose a novel metho...
computer science
30,146
UnFlow: Unsupervised Learning of Optical Flow with a Bidirectional Census Loss
cs.CV
In the era of end-to-end deep learning, many advances in computer vision are driven by large amounts of labeled data. In the optical flow setting, however, obtaining dense per-pixel ground truth for real scenes is difficult and thus such data is rare. Therefore, recent end-to-end convolutional networks for optical flow...
computer science
30,147
Functional Map of the World
cs.CV
We present a new dataset, Functional Map of the World (fMoW), which aims to inspire the development of machine learning models capable of predicting the functional purpose of buildings and land use from temporal sequences of satellite images and a rich set of metadata features. The metadata provided with each image ena...
computer science
30,148
SilNet : Single- and Multi-View Reconstruction by Learning from Silhouettes
cs.CV
The objective of this paper is 3D shape understanding from single and multiple images. To this end, we introduce a new deep-learning architecture and loss function, SilNet, that can handle multiple views in an order-agnostic manner. The architecture is fully convolutional, and for training we use a proxy task of silhou...
computer science
30,149
Aperture Supervision for Monocular Depth Estimation
cs.CV
We present a novel method to train machine learning algorithms to estimate scene depths from a single image, by using the information provided by a camera's aperture as supervision. Prior works use a depth sensor's outputs or images of the same scene from alternate viewpoints as supervision, while our method instead us...
computer science
30,150
Non-local Neural Networks
cs.CV
Both convolutional and recurrent operations are building blocks that process one local neighborhood at a time. In this paper, we present non-local operations as a generic family of building blocks for capturing long-range dependencies. Inspired by the classical non-local means method in computer vision, our non-local o...
computer science
30,151
WAYLA - Generating Images from Eye Movements
cs.CV
We present a method for reconstructing images viewed by observers based only on their eye movements. By exploring the relationships between gaze patterns and image stimuli, the "What Are You Looking At?" (WAYLA) system learns to synthesize photo-realistic images that are similar to the original pictures being viewed. T...
computer science
30,152
Generating Analytic Insights on Human Behaviour using Image Processing
cs.CV
This paper proposes a method to track human figures in physical spaces and then utilizes this data to generate several data points such as footfall distribution, demographic analysis,heat maps as well as gender distribution. The proposed framework aims to establish this while utilizing minimum computational resources w...
computer science
30,153
Deep Sparse Coding for Invariant Multimodal Halle Berry Neurons
cs.CV
Deep feed-forward convolutional neural networks (CNNs) have become ubiquitous in virtually all machine learning and computer vision challenges; however, advancements in CNNs have arguably reached an engineering saturation point where incremental novelty results in minor performance gains. Although there is evidence tha...
computer science
30,154
Dynamic High Resolution Deformable Articulated Tracking
cs.CV
The last several years have seen significant progress in using depth cameras for tracking articulated objects such as human bodies, hands, and robotic manipulators. Most approaches focus on tracking skeletal parameters of a fixed shape model, which makes them insufficient for applications that require accurate estimate...
computer science
30,155
Personalization of Saliency Estimation
cs.CV
Most existing saliency models use low-level features or task descriptions when generating attention predictions. However, the link between observer characteristics and gaze patterns is rarely investigated. We present a novel saliency prediction technique which takes viewers' identities and personal traits into consider...
computer science
30,156
Identifying Most Walkable Direction for Navigation in an Outdoor Environment
cs.CV
We present an approach for identifying the most walkable direction for navigation using a hand-held camera. Our approach extracts semantically rich contextual information from the scene using a custom encoder-decoder architecture for semantic segmentation and models the spatial and temporal behavior of objects in the s...
computer science
30,157
Integrating both Visual and Audio Cues for Enhanced Video Caption
cs.CV
Video caption refers to generating a descriptive sentence for a specific short video clip automatically, which has achieved remarkable success recently. However, most of the existing methods focus more on visual information while ignoring the synchronized audio cues. We propose three multimodal deep fusion strategies t...
computer science
30,158
CMCGAN: A Uniform Framework for Cross-Modal Visual-Audio Mutual Generation
cs.CV
Visual and audio modalities are two symbiotic modalities underlying videos, which contain both common and complementary information. If they can be mined and fused sufficiently, performances of related video tasks can be significantly enhanced. However, due to the environmental interference or sensor fault, sometimes, ...
computer science
30,159
Visual Question Answering as a Meta Learning Task
cs.CV
The predominant approach to Visual Question Answering (VQA) demands that the model represents within its weights all of the information required to answer any question about any image. Learning this information from any real training set seems unlikely, and representing it in a reasonable number of weights doubly so. W...
computer science
30,160
The Devil is in the Middle: Exploiting Mid-level Representations for Cross-Domain Instance Matching
cs.CV
Many vision problems require matching images of object instances across different domains. These include fine-grained sketch-based image retrieval (FG-SBIR) and Person Re-identification (person ReID). Existing approaches attempt to learn a joint embedding space where images from different domains can be directly compar...
computer science
30,161
Shift: A Zero FLOP, Zero Parameter Alternative to Spatial Convolutions
cs.CV
Neural networks rely on convolutions to aggregate spatial information. However, spatial convolutions are expensive in terms of model size and computation, both of which grow quadratically with respect to kernel size. In this paper, we present a parameter-free, FLOP-free "shift" operation as an alternative to spatial co...
computer science
30,162
A Face Fairness Framework for 3D Meshes
cs.CV
In this paper, we present a face fairness framework for 3D meshes that preserves the regular shape of faces and is applicable to a variety of 3D mesh restoration tasks. Specifically, we present a number of desirable properties for any mesh restoration method and show that our framework satisfies them. We then apply our...
computer science
30,163
Object Discovery By Generative Adversarial & Ranking Networks
cs.CV
The deep generative adversarial networks (GAN) recently have been shown to be promising for different computer vision applications, like image editing, synthesizing high resolution images, generating videos, etc. These networks and the corresponding learning scheme can handle various visual space mappings. We approach ...
computer science
30,164
Video Semantic Object Segmentation by Self-Adaptation of DCNN
cs.CV
This paper proposes a new framework for semantic segmentation of objects in videos. We address the label inconsistency problem of deep convolutional neural networks (DCNNs) by exploiting the fact that videos have multiple frames; in a few frames the object is confidently-estimated (CE) and we use the information in the...
computer science
30,165
AlignedReID: Surpassing Human-Level Performance in Person Re-Identification
cs.CV
In this paper, we propose a novel method called AlignedReID that extracts a global feature which is jointly learned with local features. Global feature learning benefits greatly from local feature learning, which performs an alignment/matching by calculating the shortest path between two sets of local features, without...
computer science
30,166
An Analysis of Scale Invariance in Object Detection - SNIP
cs.CV
An analysis of different techniques for recognizing and detecting objects under extreme scale variation is presented. Scale specific and scale invariant design of detectors are compared by training them with different configurations of input data. To examine if upsampling images is necessary for detecting small objects...
computer science
30,167
Temporal 3D ConvNets: New Architecture and Transfer Learning for Video Classification
cs.CV
The work in this paper is driven by the question how to exploit the temporal cues available in videos for their accurate classification, and for human action recognition in particular? Thus far, the vision community has focused on spatio-temporal approaches with fixed temporal convolution kernel depths. We introduce a ...
computer science
30,168
Integral Human Pose Regression
cs.CV
State-of-the-art human pose estimation methods are based on heat map representation. In spite of the good performance, the representation has a few issues in nature, such as not differentiable and quantization error. This work shows that a simple integral operation relates and unifies the heat map representation and jo...
computer science
30,169
Multi-Level Recurrent Residual Networks for Action Recognition
cs.CV
Most existing Convolutional Neural Networks(CNNs) used for action recognition are either difficult to optimize or underuse crucial temporal information. Inspired by the fact that the recurrent model consistently makes breakthroughs in the task related to sequence, we propose a novel Multi-Level Recurrent Residual Netwo...
computer science
30,170
3D Point Cloud Classification and Segmentation using 3D Modified Fisher Vector Representation for Convolutional Neural Networks
cs.CV
The point cloud is gaining prominence as a method for representing 3D shapes, but its irregular format poses a challenge for deep learning methods. The common solution of transforming the data into a 3D voxel grid introduces its own challenges, mainly large memory size. In this paper we propose a novel 3D point cloud r...
computer science
30,171
Neuron-level Selective Context Aggregation for Scene Segmentation
cs.CV
Contextual information provides important cues for disambiguating visually similar pixels in scene segmentation. In this paper, we introduce a neuron-level Selective Context Aggregation (SCA) module for scene segmentation, comprised of a contextual dependency predictor and a context aggregation operator. The dependency...
computer science
30,172
Evaluate the Malignancy of Pulmonary Nodules Using the 3D Deep Leaky Noisy-or Network
cs.CV
Automatic diagnosing lung cancer from Computed Tomography (CT) scans involves two steps: detect all suspicious lesions (pulmonary nodules) and evaluate the whole-lung/pulmonary malignancy. Currently, there are many studies about the first step, but few about the second step. Since the existence of nodule does not defin...
computer science
30,173
RGB-D-based Human Motion Recognition with Deep Learning: A Survey
cs.CV
Human motion recognition is one of the most important branches of human-centered research activities. In recent years, motion recognition based on RGB-D data has attracted much attention. Along with the development in artificial intelligence, deep learning techniques have gained remarkable success in computer vision. I...
computer science
30,174
Conditional Image-Text Embedding Networks
cs.CV
This paper presents an approach for grounding phrases in images which jointly learns multiple text-conditioned embeddings in a single end-to-end model. In order to differentiate text phrases into semantically distinct subspaces, we propose a concept weight branch that automatically assigns phrases to embeddings, wherea...
computer science
30,175
VITON: An Image-based Virtual Try-on Network
cs.CV
We present an image-based VIirtual Try-On Network (VITON) without using 3D information in any form, which seamlessly transfers a desired clothing item onto the corresponding region of a person using a coarse-to-fine strategy. Conditioned upon a new clothing-agnostic yet descriptive person representation, our framework ...
computer science
30,176
Frustum PointNets for 3D Object Detection from RGB-D Data
cs.CV
While object recognition on 2D images is getting more and more mature, 3D understanding is eagerly in demand yet largely underexplored. In this paper, we study the 3D object detection problem from RGB-D data captured by depth sensors in both indoor and outdoor environments. Different from previous deep learning methods...
computer science
30,177
Learning Deep Representations of Medical Images using Siamese CNNs with Application to Content-Based Image Retrieval
cs.CV
Deep neural networks have been investigated in learning latent representations of medical images, yet most of the studies limit their approach in a single supervised convolutional neural network (CNN), which usually rely heavily on a large scale annotated dataset for training. To learn image representations with less s...
computer science
30,178
Temporal Relational Reasoning in Videos
cs.CV
Temporal relational reasoning, the ability to link meaningful transformations of objects or entities over time, is a fundamental property of intelligent species. In this paper, we introduce an effective and interpretable network module, the Temporal Relation Network (TRN), designed to learn and reason about temporal de...
computer science
30,179
Train, Diagnose and Fix: Interpretable Approach for Fine-grained Action Recognition
cs.CV
Despite the growing discriminative capabilities of modern deep learning methods for recognition tasks, the inner workings of the state-of-art models still remain mostly black-boxes. In this paper, we propose a systematic interpretation of model parameters and hidden representations of Residual Temporal Convolutional Ne...
computer science
30,180
W-Net: A Deep Model for Fully Unsupervised Image Segmentation
cs.CV
While significant attention has been recently focused on designing supervised deep semantic segmentation algorithms for vision tasks, there are many domains in which sufficient supervised pixel-level labels are difficult to obtain. In this paper, we revisit the problem of purely unsupervised image segmentation and prop...
computer science
30,181
Adversarial Feature Augmentation for Unsupervised Domain Adaptation
cs.CV
Recent works showed that Generative Adversarial Networks (GANs) can be successfully applied in unsupervised domain adaptation, where, given a labeled source dataset and an unlabeled target dataset, the goal is to train powerful classifiers for the target samples. In particular, it was shown that a GAN objective functio...
computer science
30,182
Person Transfer GAN to Bridge Domain Gap for Person Re-Identification
cs.CV
Although the performance of person Re-Identification (ReID) has been significantly boosted, many challenging issues in real scenarios have not been fully investigated, e.g., the complex scenes and lighting variations, viewpoint and pose changes, and the large number of identities in a camera network. To facilitate the ...
computer science
30,183
Geometric Cross-Modal Comparison of Heterogeneous Sensor Data
cs.CV
In this work, we address the problem of cross-modal comparison of aerial data streams. A variety of simulated automobile trajectories are sensed using two different modalities: full-motion video, and radio-frequency (RF) signals received by detectors at various locations. The information represented by the two modaliti...
computer science
30,184
3D Anisotropic Hybrid Network: Transferring Convolutional Features from 2D Images to 3D Anisotropic Volumes
cs.CV
While deep convolutional neural networks (CNN) have been successfully applied for 2D image analysis, it is still challenging to apply them to 3D anisotropic volumes, especially when the within-slice resolution is much higher than the between-slice resolution and when the amount of 3D volumes is relatively small. On one...
computer science
30,185
Exploiting temporal information for 3D pose estimation
cs.CV
In this work, we address the problem of 3D human pose estimation from a sequence of 2D human poses. Although the recent success of deep networks has led many state-of-the-art methods for 3D pose estimation to train deep networks end-to-end to predict from images directly, the top-performing approaches have shown the ef...
computer science
30,186
SGPN: Similarity Group Proposal Network for 3D Point Cloud Instance Segmentation
cs.CV
We introduce Similarity Group Proposal Network (SGPN), a simple and intuitive deep learning framework for 3D object instance segmentation on point clouds. SGPN uses a single network to predict point grouping proposals and a corresponding semantic class for each proposal, from which we can directly extract instance segm...
computer science
30,187
Image Inpainting using Multi-Scale Feature Image Translation
cs.CV
We study the task of image inpainting, which is to fill in the missing region of an incomplete image with plausible contents. To this end, we propose a learning-based approach to generate visually coherent completion given a high-resolution image with missing components. In order to overcome the difficulty to directly ...
computer science
30,188
Regularization of Deep Neural Networks with Spectral Dropout
cs.CV
The big breakthrough on the ImageNet challenge in 2012 was partially due to the `dropout' technique used to avoid overfitting. Here, we introduce a new approach called `Spectral Dropout' to improve the generalization ability of deep neural networks. We cast the proposed approach in the form of regular Convolutional Neu...
computer science
30,189
Unsupervised End-to-end Learning for Deformable Medical Image Registration
cs.CV
We propose a registration algorithm for 2D CT/MRI medical images with a new unsupervised end-to-end strategy using convolutional neural networks. The contributions of our algorithm are threefold: (1) We transplant traditional image registration algorithms to an end-to-end convolutional neural network framework, while m...
computer science
30,190
Self-Reinforced Cascaded Regression for Face Alignment
cs.CV
Cascaded regression is prevailing in face alignment thanks to its accuracy and robustness, but typically demands manually annotated examples having low discrepancy between shape-indexed features and shape updates. In this paper, we propose a self-reinforced strategy that iteratively expands the quantity and improves th...
computer science
30,191
Self-view Grounding Given a Narrated 360° Video
cs.CV
Narrated 360{\deg} videos are typically provided in many touring scenarios to mimic real-world experience. However, previous work has shown that smart assistance (i.e., providing visual guidance) can significantly help users to follow the Normal Field of View (NFoV) corresponding to the narrative. In this project, we a...
computer science
30,192
Deep Expander Networks: Efficient Deep Networks from Graph Theory
cs.CV
Deep Neural Networks, while being unreasonably effective for several vision tasks, have their usage limited by the computational and memory requirements, both during training and inference stages. Analyzing and improving the connectivity patterns between layers of a network has resulted in several compact architectures...
computer science
30,193
Boosted Cascaded Convnets for Multilabel Classification of Thoracic Diseases in Chest Radiographs
cs.CV
Chest X-ray is one of the most accessible medical imaging technique for diagnosis of multiple diseases. With the availability of ChestX-ray14, which is a massive dataset of chest X-ray images and provides annotations for 14 thoracic diseases; it is possible to train Deep Convolutional Neural Networks (DCNN) to build Co...
computer science
30,194
Region-based Quality Estimation Network for Large-scale Person Re-identification
cs.CV
One of the major restrictions on the performance of video-based person re-id is partial noise caused by occlusion, blur and illumination. Since different spatial regions of a single frame have various quality, and the quality of the same region also varies across frames in a tracklet, a good way to address the problem ...
computer science
30,195
3D Based Landmark Tracker Using Superpixels Based Segmentation for Neuroscience and Biomechanics Studies
cs.CV
Examining locomotion has improved our basic understanding of motor control and aided in treating motor impairment. Mice and rats are premier models of human disease and increasingly the model systems of choice for basic neuroscience. High frame rates (250 Hz) are needed to quantify the kinematics of these running roden...
computer science
30,196
Real-Time Seamless Single Shot 6D Object Pose Prediction
cs.CV
We propose a single-shot approach for simultaneously detecting an object in an RGB image and predicting its 6D pose without requiring multiple stages or having to examine multiple hypotheses. Unlike a recently proposed single-shot technique for this task (Kehl et al., ICCV'17) that only predicts an approximate 6D pose ...
computer science
30,197
Feature Selective Networks for Object Detection
cs.CV
Objects for detection usually have distinct characteristics in different sub-regions and different aspect ratios. However, in prevalent two-stage object detection methods, Region-of-Interest (RoI) features are extracted by RoI pooling with little emphasis on these translation-variant feature components. We present feat...
computer science
30,198
Supervised Hashing with End-to-End Binary Deep Neural Network
cs.CV
Image hashing is a popular technique applied to large scale content-based visual retrieval due to its compact and efficient binary codes. Our work proposes a new end-to-end deep network architecture for supervised hashing which directly learns binary codes from input images and maintains good properties over binary cod...
computer science
30,199
CatGAN: Coupled Adversarial Transfer for Domain Generation
cs.CV
This paper introduces a Coupled adversarial transfer GAN (CatGAN), an efficient solution to domain alignment. The basic principles of CatGAN focus on the domain generation strategy for adaptation which is motivated by the generative adversarial net (GAN) and the adversarial discriminative domain adaptation (ADDA). CatG...
computer science
30,200
Deep learning analysis of the myocardium in coronary CT angiography for identification of patients with functionally significant coronary artery stenosis
cs.CV
In patients with coronary artery stenoses of intermediate severity, the functional significance needs to be determined. Fractional flow reserve (FFR) measurement, performed during invasive coronary angiography (ICA), is most often used in clinical practice. To reduce the number of ICA procedures, we present a method fo...
computer science
30,201
SplineCNN: Fast Geometric Deep Learning with Continuous B-Spline Kernels
cs.CV
We present Spline-based Convolutional Neural Networks (SplineCNNs), a variant of deep neural networks for irregular structured and geometric input, e.g., graphs or meshes. Our main contribution is a novel convolution operator based on B-splines, that makes the computation time independent from the kernel size due to th...
computer science