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27,202
How hard is it to cross the room? -- Training (Recurrent) Neural Networks to steer a UAV
cs.CV
This work explores the feasibility of steering a drone with a (recurrent) neural network, based on input from a forward looking camera, in the context of a high-level navigation task. We set up a generic framework for training a network to perform navigation tasks based on imitation learning. It can be applied to both ...
computer science
27,203
Automatic segmentation of agricultural objects in dynamic outdoor environments
cs.CV
Segmentation in dynamic outdoor environments can be difficult when the illumination levels and other aspects of the scene cannot be controlled. Specifically in agricultural contexts, a background material is often used to shield a camera's field of view from other rows of crops. In this paper, we describe a method that...
computer science
27,204
Unifying local and non-local signal processing with graph CNNs
cs.CV
This paper deals with the unification of local and non-local signal processing on graphs within a single convolutional neural network (CNN) framework. Building upon recent works on graph CNNs, we propose to use convolutional layers that take as inputs two variables, a signal and a graph, allowing the network to adapt t...
computer science
27,205
Video and Accelerometer-Based Motion Analysis for Automated Surgical Skills Assessment
cs.CV
Purpose: Basic surgical skills of suturing and knot tying are an essential part of medical training. Having an automated system for surgical skills assessment could help save experts time and improve training efficiency. There have been some recent attempts at automated surgical skills assessment using either video ana...
computer science
27,206
Transfer Learning for Domain Adaptation in MRI: Application in Brain Lesion Segmentation
cs.CV
Magnetic Resonance Imaging (MRI) is widely used in routine clinical diagnosis and treatment. However, variations in MRI acquisition protocols result in different appearances of normal and diseased tissue in the images. Convolutional neural networks (CNNs), which have shown to be successful in many medical image analysi...
computer science
27,207
Image Stitching by Line-guided Local Warping with Global Similarity Constraint
cs.CV
Low-textured image stitching remains a challenging problem. It is difficult to achieve good alignment and it is easy to break image structures due to insufficient and unreliable point correspondences. Moreover, because of the viewpoint variations between multiple images, the stitched images suffer from projective disto...
computer science
27,208
Spatially Aware Melanoma Segmentation Using Hybrid Deep Learning Techniques
cs.CV
In this paper, we proposed using a hybrid method that utilises deep convolutional and recurrent neural networks for accurate delineation of skin lesion of images supplied with ISBI 2017 lesion segmentation challenge. The proposed method was trained using 1800 images and tested on 150 images from ISBI 2017 challenge.
computer science
27,209
Seeing What Is Not There: Learning Context to Determine Where Objects Are Missing
cs.CV
Most of computer vision focuses on what is in an image. We propose to train a standalone object-centric context representation to perform the opposite task: seeing what is not there. Given an image, our context model can predict where objects should exist, even when no object instances are present. Combined with object...
computer science
27,210
Building Fast and Compact Convolutional Neural Networks for Offline Handwritten Chinese Character Recognition
cs.CV
Like other problems in computer vision, offline handwritten Chinese character recognition (HCCR) has achieved impressive results using convolutional neural network (CNN)-based methods. However, larger and deeper networks are needed to deliver state-of-the-art results in this domain. Such networks intuitively appear to ...
computer science
27,211
A multi-task convolutional neural network for mega-city analysis using very high resolution satellite imagery and geospatial data
cs.CV
Mega-city analysis with very high resolution (VHR) satellite images has been drawing increasing interest in the fields of city planning and social investigation. It is known that accurate land-use, urban density, and population distribution information is the key to mega-city monitoring and environmental studies. There...
computer science
27,212
Bayesian Nonparametric Unmixing of Hyperspectral Images
cs.CV
Hyperspectral imaging is an important tool in remote sensing, allowing for accurate analysis of vast areas. Due to a low spatial resolution, a pixel of a hyperspectral image rarely represents a single material, but rather a mixture of different spectra. HSU aims at estimating the pure spectra present in the scene of in...
computer science
27,213
Adversarial Networks for the Detection of Aggressive Prostate Cancer
cs.CV
Semantic segmentation constitutes an integral part of medical image analyses for which breakthroughs in the field of deep learning were of high relevance. The large number of trainable parameters of deep neural networks however renders them inherently data hungry, a characteristic that heavily challenges the medical im...
computer science
27,214
3D Scanning System for Automatic High-Resolution Plant Phenotyping
cs.CV
Thin leaves, fine stems, self-occlusion, non-rigid and slowly changing structures make plants difficult for three-dimensional (3D) scanning and reconstruction -- two critical steps in automated visual phenotyping. Many current solutions such as laser scanning, structured light, and multiview stereo can struggle to acqu...
computer science
27,215
Bioplausible multiscale filtering in retino-cortical processing as a mechanism in perceptual grouping
cs.CV
Why does our visual system fail to reconstruct reality, when we look at certain patterns? Where do Geometrical illusions start to emerge in the visual pathway? How far should we take computational models of vision with the same visual ability to detect illusions as we do? This study addresses these questions, by focusi...
computer science
27,216
Multi-scale Image Fusion Between Pre-operative Clinical CT and X-ray Microtomography of Lung Pathology
cs.CV
Computational anatomy allows the quantitative analysis of organs in medical images. However, most analysis is constrained to the millimeter scale because of the limited resolution of clinical computed tomography (CT). X-ray microtomography ($\mu$CT) on the other hand allows imaging of ex-vivo tissues at a resolution of...
computer science
27,217
HashBox: Hash Hierarchical Segmentation exploiting Bounding Box Object Detection
cs.CV
We propose a novel approach to address the Simultaneous Detection and Segmentation problem. Using hierarchical structures we use an efficient and accurate procedure that exploits the hierarchy feature information using Locality Sensitive Hashing. We build on recent work that utilizes convolutional neural networks to de...
computer science
27,218
A Dataset for Developing and Benchmarking Active Vision
cs.CV
We present a new public dataset with a focus on simulating robotic vision tasks in everyday indoor environments using real imagery. The dataset includes 20,000+ RGB-D images and 50,000+ 2D bounding boxes of object instances densely captured in 9 unique scenes. We train a fast object category detector for instance detec...
computer science
27,219
Efficient Privacy Preserving Viola-Jones Type Object Detection via Random Base Image Representation
cs.CV
A cloud server spent a lot of time, energy and money to train a Viola-Jones type object detector with high accuracy. Clients can upload their photos to the cloud server to find objects. However, the client does not want the leakage of the content of his/her photos. In the meanwhile, the cloud server is also reluctant t...
computer science
27,220
Visual Translation Embedding Network for Visual Relation Detection
cs.CV
Visual relations, such as "person ride bike" and "bike next to car", offer a comprehensive scene understanding of an image, and have already shown their great utility in connecting computer vision and natural language. However, due to the challenging combinatorial complexity of modeling subject-predicate-object relatio...
computer science
27,221
Multi-Label Segmentation via Residual-Driven Adaptive Regularization
cs.CV
We present a variational multi-label segmentation algorithm based on a robust Huber loss for both the data and the regularizer, minimized within a convex optimization framework. We introduce a novel constraint on the common areas, to bias the solution towards mutually exclusive regions. We also propose a regularization...
computer science
27,222
Revealing Hidden Potentials of the q-Space Signal in Breast Cancer
cs.CV
Mammography screening for early detection of breast lesions currently suffers from high amounts of false positive findings, which result in unnecessary invasive biopsies. Diffusion-weighted MR images (DWI) can help to reduce many of these false-positive findings prior to biopsy. Current approaches estimate tissue prope...
computer science
27,223
Age Progression/Regression by Conditional Adversarial Autoencoder
cs.CV
"If I provide you a face image of mine (without telling you the actual age when I took the picture) and a large amount of face images that I crawled (containing labeled faces of different ages but not necessarily paired), can you show me what I would look like when I am 80 or what I was like when I was 5?" The answer i...
computer science
27,224
Skin Lesion Classification Using Hybrid Deep Neural Networks
cs.CV
Skin cancer is one of the major types of cancers and its incidence has been increasing over the past decades. Skin lesions can arise from various dermatologic disorders and can be classified to various types according to their texture, structure, color and other morphological features. The accuracy of diagnosis of skin...
computer science
27,225
Understanding Convolution for Semantic Segmentation
cs.CV
Recent advances in deep learning, especially deep convolutional neural networks (CNNs), have led to significant improvement over previous semantic segmentation systems. Here we show how to improve pixel-wise semantic segmentation by manipulating convolution-related operations that are of both theoretical and practical ...
computer science
27,226
DepthSynth: Real-Time Realistic Synthetic Data Generation from CAD Models for 2.5D Recognition
cs.CV
Recent progress in computer vision has been dominated by deep neural networks trained over large amounts of labeled data. Collecting such datasets is however a tedious, often impossible task; hence a surge in approaches relying solely on synthetic data for their training. For depth images however, discrepancies with re...
computer science
27,227
Enabling Sparse Winograd Convolution by Native Pruning
cs.CV
Sparse methods and the use of Winograd convolutions are two orthogonal approaches, each of which significantly accelerates convolution computations in modern CNNs. Sparse Winograd merges these two and thus has the potential to offer a combined performance benefit. Nevertheless, training convolution layers so that the r...
computer science
27,228
Parallel Structure from Motion from Local Increment to Global Averaging
cs.CV
In this paper, we tackle the accurate and consistent Structure from Motion (SfM) problem, in particular camera registration, far exceeding the memory of a single computer in parallel. Different from the previous methods which drastically simplify the parameters of SfM and sacrifice the accuracy of the final reconstruct...
computer science
27,229
Super-Trajectory for Video Segmentation
cs.CV
We introduce a novel semi-supervised video segmentation approach based on an efficient video representation, called as "super-trajectory". Each super-trajectory corresponds to a group of compact trajectories that exhibit consistent motion patterns, similar appearance and close spatiotemporal relationships. We generate ...
computer science
27,230
Selective Video Object Cutout
cs.CV
Conventional video segmentation approaches rely heavily on appearance models. Such methods often use appearance descriptors that have limited discriminative power under complex scenarios. To improve the segmentation performance, this paper presents a pyramid histogram based confidence map that incorporates structure in...
computer science
27,231
Boundary Flow: A Siamese Network that Predicts Boundary Motion without Training on Motion
cs.CV
This paper addresses a new problem of joint object boundary detection and boundary motion estimation in videos, which we named boundary flow estimation. Boundary flow is an important mid-level visual cue as boundaries characterize objects spatial extents, and the flow indicates objects motions and interactions. Yet, mo...
computer science
27,232
Scene Flow to Action Map: A New Representation for RGB-D based Action Recognition with Convolutional Neural Networks
cs.CV
Scene flow describes the motion of 3D objects in real world and potentially could be the basis of a good feature for 3D action recognition. However, its use for action recognition, especially in the context of convolutional neural networks (ConvNets), has not been previously studied. In this paper, we propose the extra...
computer science
27,233
3D Shape Segmentation via Shape Fully Convolutional Networks
cs.CV
We propose a novel fully convolutional network architecture for shapes, denoted by Shape Fully Convolutional Networks (SFCN). 3D shapes are represented as graph structures in the SFCN architecture, based on novel graph convolution and pooling operations, which are similar to convolution and pooling operations used on i...
computer science
27,234
MIML-FCN+: Multi-instance Multi-label Learning via Fully Convolutional Networks with Privileged Information
cs.CV
Multi-instance multi-label (MIML) learning has many interesting applications in computer visions, including multi-object recognition and automatic image tagging. In these applications, additional information such as bounding-boxes, image captions and descriptions is often available during training phrase, which is refe...
computer science
27,235
Cascade one-vs-rest detection network for fine-grained recognition without part annotations
cs.CV
Fine-grained recognition is a challenging task due to the small intra-category variances. Most of top-performing fine-grained recognition methods leverage parts of objects for better performance. Therefore, part annotations which are extremely computationally expensive are required. In this paper, we propose a novel ca...
computer science
27,236
II-FCN for skin lesion analysis towards melanoma detection
cs.CV
Dermoscopy image detection stays a tough task due to the weak distinguishable property of the object.Although the deep convolution neural network signifigantly boosted the performance on prevelance computer vision tasks in recent years,there remains a room to explore more robust and precise models to the problem of low...
computer science
27,237
An Extensive Technique to Detect and Analyze Melanoma: A Challenge at the International Symposium on Biomedical Imaging (ISBI) 2017
cs.CV
An automated method to detect and analyze the melanoma is presented to improve diagnosis which will leads to the exact treatment. Image processing techniques such as segmentation, feature descriptors and classification models are involved in this method. In the First phase the lesion region is segmented using CIELAB Co...
computer science
27,238
Weakly- and Semi-Supervised Object Detection with Expectation-Maximization Algorithm
cs.CV
Object detection when provided image-level labels instead of instance-level labels (i.e., bounding boxes) during training is an important problem in computer vision, since large scale image datasets with instance-level labels are extremely costly to obtain. In this paper, we address this challenging problem by developi...
computer science
27,239
MILD: Multi-Index hashing for Loop closure Detection
cs.CV
Loop Closure Detection (LCD) has been proved to be extremely useful in global consistent visual Simultaneously Localization and Mapping (SLAM) and appearance-based robot relocalization. Methods exploiting binary features in bag of words representation have recently gained a lot of popularity for their efficiency, but s...
computer science
27,240
Unsupervised Triplet Hashing for Fast Image Retrieval
cs.CV
Hashing has played a pivotal role in large-scale image retrieval. With the development of Convolutional Neural Network (CNN), hashing learning has shown great promise. But existing methods are mostly tuned for classification, which are not optimized for retrieval tasks, especially for instance-level retrieval. In this ...
computer science
27,241
Predicting Slice-to-Volume Transformation in Presence of Arbitrary Subject Motion
cs.CV
This paper aims to solve a fundamental problem in intensity-based 2D/3D registration, which concerns the limited capture range and need for very good initialization of state-of-the-art image registration methods. We propose a regression approach that learns to predict rotation and translations of arbitrary 2D image sli...
computer science
27,242
Context-Sensitive Super-Resolution for Fast Fetal Magnetic Resonance Imaging
cs.CV
3D Magnetic Resonance Imaging (MRI) is often a trade-off between fast but low-resolution image acquisition and highly detailed but slow image acquisition. Fast imaging is required for targets that move to avoid motion artefacts. This is in particular difficult for fetal MRI. Spatially independent upsampling techniques,...
computer science
27,243
Deep Image Harmonization
cs.CV
Compositing is one of the most common operations in photo editing. To generate realistic composites, the appearances of foreground and background need to be adjusted to make them compatible. Previous approaches to harmonize composites have focused on learning statistical relationships between hand-crafted appearance fe...
computer science
27,244
Discrete Wavelet Transform Based Algorithm for Recognition of QRS Complexes
cs.CV
This paper proposes the application of Discrete Wavelet Transform (DWT) to detect the QRS (ECG is characterized by a recurrent wave sequence of P, QRS and T-wave) of an electrocardiogram (ECG) signal. Wavelet Transform provides localization in both time and frequency. In preprocessing stage, DWT is used to remove the b...
computer science
27,245
Supervised Saliency Map Driven Segmentation of the Lesions in Dermoscopic Images
cs.CV
Lesion segmentation is the first step in the most automatic melanoma recognition systems. There are some deficiencies and difficulties in dermoscopic images that make the lesion segmentation an intricate task e.g., hair occlusion, presence of dark corners and color charts, indistinct lesion borders, and lesions touchin...
computer science
27,246
Remote Sensing Image Scene Classification: Benchmark and State of the Art
cs.CV
Remote sensing image scene classification plays an important role in a wide range of applications and hence has been receiving remarkable attention. During the past years, significant efforts have been made to develop various datasets or present a variety of approaches for scene classification from remote sensing image...
computer science
27,247
RGB-D Salient Object Detection Based on Discriminative Cross-modal Transfer Learning
cs.CV
In this work, we propose to utilize Convolutional Neural Networks to boost the performance of depth-induced salient object detection by capturing the high-level representative features for depth modality. We formulate the depth-induced saliency detection as a CNN-based cross-modal transfer problem to bridge the gap bet...
computer science
27,248
Saliency Detection by Forward and Backward Cues in Deep-CNNs
cs.CV
As prior knowledge of objects or object features helps us make relations for similar objects on attentional tasks, pre-trained deep convolutional neural networks (CNNs) can be used to detect salient objects on images regardless of the object class is in the network knowledge or not. In this paper, we propose a top-down...
computer science
27,249
Saliency Fusion in Eigenvector Space with Multi-Channel Pulse Coupled Neural Network
cs.CV
Saliency computation has become a popular research field for many applications due to the useful information provided by saliency maps. For a saliency map, local relations around the salient regions in multi-channel perspective should be taken into consideration by aiming uniformity on the region of interest as an inte...
computer science
27,250
Optical Flow-based 3D Human Motion Estimation from Monocular Video
cs.CV
We present a generative method to estimate 3D human motion and body shape from monocular video. Under the assumption that starting from an initial pose optical flow constrains subsequent human motion, we exploit flow to find temporally coherent human poses of a motion sequence. We estimate human motion by minimizing th...
computer science
27,251
Incorporating Intra-Class Variance to Fine-Grained Visual Recognition
cs.CV
Fine-grained visual recognition aims to capture discriminative characteristics amongst visually similar categories. The state-of-the-art research work has significantly improved the fine-grained recognition performance by deep metric learning using triplet network. However, the impact of intra-category variance on the ...
computer science
27,252
Improving Object Detection with Region Similarity Learning
cs.CV
Object detection aims to identify instances of semantic objects of a certain class in images or videos. The success of state-of-the-art approaches is attributed to the significant progress of object proposal and convolutional neural networks (CNNs). Most promising detectors involve multi-task learning with an optimizat...
computer science
27,253
Human Eye Visual Hyperacuity: A New Paradigm for Sensing?
cs.CV
The human eye appears to be using a low number of sensors for image capturing. Furthermore, regarding the physical dimensions of cones-photoreceptors responsible for the sharp central vision-, we may realize that these sensors are of a relatively small size and area. Nonetheless, the eye is capable to obtain high resol...
computer science
27,254
Group Sparsity Residual Constraint for Image Denoising
cs.CV
Group-based sparse representation has shown great potential in image denoising. However, most existing methods only consider the nonlocal self-similarity (NSS) prior of noisy input image. That is, the similar patches are collected only from degraded input, which makes the quality of image denoising largely depend on th...
computer science
27,255
Multi-stage Neural Networks with Single-sided Classifiers for False Positive Reduction and its Evaluation using Lung X-ray CT Images
cs.CV
Lung nodule classification is a class imbalanced problem because nodules are found with much lower frequency than non-nodules. In the class imbalanced problem, conventional classifiers tend to be overwhelmed by the majority class and ignore the minority class. We therefore propose cascaded convolutional neural networks...
computer science
27,256
Perturb-and-MPM: Quantifying Segmentation Uncertainty in Dense Multi-Label CRFs
cs.CV
This paper proposes a novel approach for uncertainty quantification in dense Conditional Random Fields (CRFs). The presented approach, called Perturb-and-MPM, enables efficient, approximate sampling from dense multi-label CRFs via random perturbations. An analytic error analysis was performed which identified the main ...
computer science
27,257
Making 360$^{\circ}$ Video Watchable in 2D: Learning Videography for Click Free Viewing
cs.CV
360$^{\circ}$ video requires human viewers to actively control "where" to look while watching the video. Although it provides a more immersive experience of the visual content, it also introduces additional burden for viewers; awkward interfaces to navigate the video lead to suboptimal viewing experiences. Virtual cine...
computer science
27,258
ISIC 2017 - Skin Lesion Analysis Towards Melanoma Detection
cs.CV
Our system addresses Part 1, Lesion Segmentation and Part 3, Lesion Classification of the ISIC 2017 challenge. Both algorithms make use of deep convolutional networks to achieve the challenge objective.
computer science
27,259
Skin cancer reorganization and classification with deep neural network
cs.CV
As one kind of skin cancer, melanoma is very dangerous. Dermoscopy based early detection and recarbonization strategy is critical for melanoma therapy. However, well-trained dermatologists dominant the diagnostic accuracy. In order to solve this problem, many effort focus on developing automatic image analysis systems....
computer science
27,260
Label Refinement Network for Coarse-to-Fine Semantic Segmentation
cs.CV
We consider the problem of semantic image segmentation using deep convolutional neural networks. We propose a novel network architecture called the label refinement network that predicts segmentation labels in a coarse-to-fine fashion at several resolutions. The segmentation labels at a coarse resolution are used toget...
computer science
27,261
Change Detection under Global Viewpoint Uncertainty
cs.CV
This paper addresses the problem of change detection from a novel perspective of long-term map learning. We are particularly interested in designing an approach that can scale to large maps and that can function under global uncertainty in the viewpoint (i.e., GPS-denied situations). Our approach, which utilizes a comp...
computer science
27,262
A Deep Cascade of Convolutional Neural Networks for MR Image Reconstruction
cs.CV
The acquisition of Magnetic Resonance Imaging (MRI) is inherently slow. Inspired by recent advances in deep learning, we propose a framework for reconstructing MR images from undersampled data using a deep cascade of convolutional neural networks to accelerate the data acquisition process. We show that for Cartesian un...
computer science
27,263
Skin Lesion Analysis Towards Melanoma Detection Using Deep Learning Network
cs.CV
Skin lesion is a severe disease in world-wide extent. Early detection of melanoma in dermoscopy images significantly increases the survival rate. However, the accurate recognition of melanoma is extremely challenging due to the following reasons, e.g. low contrast between lesions and skin, visual similarity between mel...
computer science
27,264
A novel image tag completion method based on convolutional neural network
cs.CV
In the problems of image retrieval and annotation, complete textual tag lists of images play critical roles. However, in real-world applications, the image tags are usually incomplete, thus it is important to learn the complete tags for images. In this paper, we study the problem of image tag complete and proposed a no...
computer science
27,265
TumorNet: Lung Nodule Characterization Using Multi-View Convolutional Neural Network with Gaussian Process
cs.CV
Characterization of lung nodules as benign or malignant is one of the most important tasks in lung cancer diagnosis, staging and treatment planning. While the variation in the appearance of the nodules remains large, there is a need for a fast and robust computer aided system. In this work, we propose an end-to-end tra...
computer science
27,266
BoxCars: Improving Fine-Grained Recognition of Vehicles using 3-D Bounding Boxes in Traffic Surveillance
cs.CV
In this paper, we focus on fine-grained recognition of vehicles mainly in traffic surveillance applications. We propose an approach that is orthogonal to recent advancements in fine-grained recognition (automatic part discovery and bilinear pooling). In addition, in contrast to other methods focused on fine-grained rec...
computer science
27,267
Robust Spatial Filtering with Graph Convolutional Neural Networks
cs.CV
Convolutional Neural Networks (CNNs) have recently led to incredible breakthroughs on a variety of pattern recognition problems. Banks of finite impulse response filters are learned on a hierarchy of layers, each contributing more abstract information than the previous layer. The simplicity and elegance of the convolut...
computer science
27,268
On the Reconstruction of Deep Face Templates
cs.CV
State-of-the-art face recognition systems are based on deep (convolutional) neural networks. Therefore, it is imperative to determine to what extent face templates derived from deep networks can be inverted to obtain the original face image. In this paper, we study the vulnerabilities of a state-of-the-art face recogni...
computer science
27,269
Towards CNN Map Compression for camera relocalisation
cs.CV
This paper presents a study on the use of Convolutional Neural Networks for camera relocalisation and its application to map compression. We follow state of the art visual relocalisation results and evaluate response to different data inputs -- namely, depth, grayscale, RGB, spatial position and combinations of these. ...
computer science
27,270
Araguaia Medical Vision Lab at ISIC 2017 Skin Lesion Classification Challenge
cs.CV
This paper describes the participation of Araguaia Medical Vision Lab at the International Skin Imaging Collaboration 2017 Skin Lesion Challenge. We describe the use of deep convolutional neural networks in attempt to classify images of Melanoma and Seborrheic Keratosis lesions. With use of finetuned GoogleNet and Alex...
computer science
27,271
A Novel Multi-task Deep Learning Model for Skin Lesion Segmentation and Classification
cs.CV
In this study, a multi-task deep neural network is proposed for skin lesion analysis. The proposed multi-task learning model solves different tasks (e.g., lesion segmentation and two independent binary lesion classifications) at the same time by exploiting commonalities and differences across tasks. This results in imp...
computer science
27,272
Outlier Cluster Formation in Spectral Clustering
cs.CV
Outlier detection and cluster number estimation is an important issue for clustering real data. This paper focuses on spectral clustering, a time-tested clustering method, and reveals its important properties related to outliers. The highlights of this paper are the following two mathematical observations: first, spect...
computer science
27,273
Skin Lesion Classification using Class Activation Map
cs.CV
We proposed a two stage framework with only one network to analyze skin lesion images, we firstly trained a convolutional network to classify these images, and cropped the import regions which the network has the maximum activation value. In the second stage, we retrained this CNN with the image regions extracted from ...
computer science
27,274
Arbitrary-Oriented Scene Text Detection via Rotation Proposals
cs.CV
This paper introduces a novel rotation-based framework for arbitrary-oriented text detection in natural scene images. We present the Rotation Region Proposal Networks (RRPN), which are designed to generate inclined proposals with text orientation angle information. The angle information is then adapted for bounding box...
computer science
27,275
Deep artifact learning for compressed sensing and parallel MRI
cs.CV
Purpose: Compressed sensing MRI (CS-MRI) from single and parallel coils is one of the powerful ways to reduce the scan time of MR imaging with performance guarantee. However, the computational costs are usually expensive. This paper aims to propose a computationally fast and accurate deep learning algorithm for the rec...
computer science
27,276
Deep Learning with Domain Adaptation for Accelerated Projection-Reconstruction MR
cs.CV
Purpose: The radial k-space trajectory is a well-established sampling trajectory used in conjunction with magnetic resonance imaging. However, the radial k-space trajectory requires a large number of radial lines for high-resolution reconstruction. Increasing the number of radial lines causes longer acquisition time, m...
computer science
27,277
EmotioNet Challenge: Recognition of facial expressions of emotion in the wild
cs.CV
This paper details the methodology and results of the EmotioNet challenge. This challenge is the first to test the ability of computer vision algorithms in the automatic analysis of a large number of images of facial expressions of emotion in the wild. The challenge was divided into two tracks. The first track tested t...
computer science
27,278
Context Aware Query Image Representation for Particular Object Retrieval
cs.CV
The current models of image representation based on Convolutional Neural Networks (CNN) have shown tremendous performance in image retrieval. Such models are inspired by the information flow along the visual pathway in the human visual cortex. We propose that in the field of particular object retrieval, the process of ...
computer science
27,279
Deep Collaborative Learning for Visual Recognition
cs.CV
Deep neural networks are playing an important role in state-of-the-art visual recognition. To represent high-level visual concepts, modern networks are equipped with large convolutional layers, which use a large number of filters and contribute significantly to model complexity. For example, more than half of the weigh...
computer science
27,280
Augmented Reality for Depth Cues in Monocular Minimally Invasive Surgery
cs.CV
One of the major challenges in Minimally Invasive Surgery (MIS) such as laparoscopy is the lack of depth perception. In recent years, laparoscopic scene tracking and surface reconstruction has been a focus of investigation to provide rich additional information to aid the surgical process and compensate for the depth p...
computer science
27,281
Incident Light Frequency-based Image Defogging Algorithm
cs.CV
Considering the problem of color distortion caused by the defogging algorithm based on dark channel prior, an improved algorithm was proposed to calculate the transmittance of all channels respectively. First, incident light frequency's effect on the transmittance of various color channels was analyzed according to the...
computer science
27,282
Instance Flow Based Online Multiple Object Tracking
cs.CV
We present a method to perform online Multiple Object Tracking (MOT) of known object categories in monocular video data. Current Tracking-by-Detection MOT approaches build on top of 2D bounding box detections. In contrast, we exploit state-of-the-art instance aware semantic segmentation techniques to compute 2D shape r...
computer science
27,283
Bridging Saliency Detection to Weakly Supervised Object Detection Based on Self-paced Curriculum Learning
cs.CV
Weakly-supervised object detection (WOD) is a challenging problems in computer vision. The key problem is to simultaneously infer the exact object locations in the training images and train the object detectors, given only the training images with weak image-level labels. Intuitively, by simulating the selective attent...
computer science
27,284
Multi-Scale Wavelet Domain Residual Learning for Limited-Angle CT Reconstruction
cs.CV
Limited-angle computed tomography (CT) is often used in clinical applications such as C-arm CT for interventional imaging. However, CT images from limited angles suffers from heavy artifacts due to incomplete projection data. Existing iterative methods require extensive calculations but can not deliver satisfactory res...
computer science
27,285
Wavelet Domain Residual Network (WavResNet) for Low-Dose X-ray CT Reconstruction
cs.CV
Model based iterative reconstruction (MBIR) algorithms for low-dose X-ray CT are computationally complex because of the repeated use of the forward and backward projection. Inspired by this success of deep learning in computer vision applications, we recently proposed a deep convolutional neural network (CNN) for low-d...
computer science
27,286
Looking at Outfit to Parse Clothing
cs.CV
This paper extends fully-convolutional neural networks (FCN) for the clothing parsing problem. Clothing parsing requires higher-level knowledge on clothing semantics and contextual cues to disambiguate fine-grained categories. We extend FCN architecture with a side-branch network which we refer outfit encoder to predic...
computer science
27,287
Stacking-based Deep Neural Network: Deep Analytic Network on Convolutional Spectral Histogram Features
cs.CV
Stacking-based deep neural network (S-DNN), in general, denotes a deep neural network (DNN) resemblance in terms of its very deep, feedforward network architecture. The typical S-DNN aggregates a variable number of individually learnable modules in series to assemble a DNN-alike alternative to the targeted object recog...
computer science
27,288
Skin Lesion Classification Using Deep Multi-scale Convolutional Neural Networks
cs.CV
We present a deep learning approach to the ISIC 2017 Skin Lesion Classification Challenge using a multi-scale convolutional neural network. Our approach utilizes an Inception-v3 network pre-trained on the ImageNet dataset, which is fine-tuned for skin lesion classification using two different scales of input images.
computer science
27,289
Deep Matching Prior Network: Toward Tighter Multi-oriented Text Detection
cs.CV
Detecting incidental scene text is a challenging task because of multi-orientation, perspective distortion, and variation of text size, color and scale. Retrospective research has only focused on using rectangular bounding box or horizontal sliding window to localize text, which may result in redundant background noise...
computer science
27,290
Automated Top View Registration of Broadcast Football Videos
cs.CV
In this paper, we propose a novel method to register football broadcast video frames on the static top view model of the playing surface. The proposed method is fully automatic in contrast to the current state of the art which requires manual initialization of point correspondences between the image and the static mode...
computer science
27,291
Generative Compression
cs.CV
Traditional image and video compression algorithms rely on hand-crafted encoder/decoder pairs (codecs) that lack adaptability and are agnostic to the data being compressed. Here we describe the concept of generative compression, the compression of data using generative models, and suggest that it is a direction worth p...
computer science
27,292
Genetic CNN
cs.CV
The deep Convolutional Neural Network (CNN) is the state-of-the-art solution for large-scale visual recognition. Following basic principles such as increasing the depth and constructing highway connections, researchers have manually designed a lot of fixed network structures and verified their effectiveness. In this ...
computer science
27,293
CDC: Convolutional-De-Convolutional Networks for Precise Temporal Action Localization in Untrimmed Videos
cs.CV
Temporal action localization is an important yet challenging problem. Given a long, untrimmed video consisting of multiple action instances and complex background contents, we need not only to recognize their action categories, but also to localize the start time and end time of each instance. Many state-of-the-art sys...
computer science
27,294
Deep-Learning for Classification of Colorectal Polyps on Whole-Slide Images
cs.CV
Histopathological characterization of colorectal polyps is an important principle for determining the risk of colorectal cancer and future rates of surveillance for patients. This characterization is time-intensive, requires years of specialized training, and suffers from significant inter-observer and intra-observer v...
computer science
27,295
Face Alignment with Cascaded Semi-Parametric Deep Greedy Neural Forests
cs.CV
Face alignment is an active topic in computer vision, consisting in aligning a shape model on the face. To this end, most modern approaches refine the shape in a cascaded manner, starting from an initial guess. Those shape updates can either be applied in the feature point space (\textit{i.e.} explicit updates) or in a...
computer science
27,296
L2GSCI: Local to Global Seam Cutting and Integrating for Accurate Face Contour Extraction
cs.CV
Current face alignment algorithms can robustly find a set of landmarks along face contour. However, the landmarks are sparse and lack curve details, especially in chin and cheek areas where a lot of concave-convex bending information exists. In this paper, we propose a local to global seam cutting and integrating algor...
computer science
27,297
Automatic Classification of Cancerous Tissue in Laserendomicroscopy Images of the Oral Cavity using Deep Learning
cs.CV
Oral Squamous Cell Carcinoma (OSCC) is a common type of cancer of the oral epithelium. Despite their high impact on mortality, sufficient screening methods for early diagnosis of OSCC often lack accuracy and thus OSCCs are mostly diagnosed at a late stage. Early detection and accurate outline estimation of OSCCs would ...
computer science
27,298
Diversified Texture Synthesis with Feed-forward Networks
cs.CV
Recent progresses on deep discriminative and generative modeling have shown promising results on texture synthesis. However, existing feed-forward based methods trade off generality for efficiency, which suffer from many issues, such as shortage of generality (i.e., build one network per texture), lack of diversity (i....
computer science
27,299
4-DoF Tracking for Robot Fine Manipulation Tasks
cs.CV
This paper presents two visual trackers from the different paradigms of learning and registration based tracking and evaluates their application in image based visual servoing. They can track object motion with four degrees of freedom (DoF) which, as we will show here, is sufficient for many fine manipulation tasks. On...
computer science
27,300
Viewpoint Selection for Photographing Architectures
cs.CV
This paper studies the problem of how to choose good viewpoints for taking photographs of architectures. We achieve this by learning from professional photographs of world famous landmarks that are available on the Internet. Unlike previous efforts devoted to photo quality assessment which mainly rely on 2D image featu...
computer science
27,301
All the people around me: face discovery in egocentric photo-streams
cs.CV
Given an unconstrained stream of images captured by a wearable photo-camera (2fpm), we propose an unsupervised bottom-up approach for automatic clustering appearing faces into the individual identities present in these data. The problem is challenging since images are acquired under real world conditions; hence the vis...
computer science