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28,002
Deep Spatio-temporal Manifold Network for Action Recognition
cs.CV
Visual data such as videos are often sampled from complex manifold. We propose leveraging the manifold structure to constrain the deep action feature learning, thereby minimizing the intra-class variations in the feature space and alleviating the over-fitting problem. Considering that manifold can be transferred, layer...
computer science
28,003
Contour Detection from Deep Patch-level Boundary Prediction
cs.CV
In this paper, we present a novel approach for contour detection with Convolutional Neural Networks. A multi-scale CNN learning framework is designed to automatically learn the most relevant features for contour patch detection. Our method uses patch-level measurements to create contour maps with overlapping patches. W...
computer science
28,004
Efficient Structure from Motion for Oblique UAV Images Based on Maximal Spanning Tree Expansions
cs.CV
The primary contribution of this paper is an efficient Structure from Motion (SfM) solution for oblique unmanned aerial vehicle (UAV) images. First, an algorithm, considering spatial relationship constrains between image footprints, is designed for match pair selection with assistant of UAV flight control data and obli...
computer science
28,005
Convolutional Dictionary Learning via Local Processing
cs.CV
Convolutional Sparse Coding (CSC) is an increasingly popular model in the signal and image processing communities, tackling some of the limitations of traditional patch-based sparse representations. Although several works have addressed the dictionary learning problem under this model, these relied on an ADMM formulati...
computer science
28,006
Diving Performance Assessment by means of Video Processing
cs.CV
The aim of this paper is to present a procedure for video analysis applied in an innovative way to diving performance assessment. Sport performance analysis is a trend that is growing exponentially for all level athletes. The technique here shown is based on two important requirements: flexibility and low cost. These t...
computer science
28,007
Large-scale, Fast and Accurate Shot Boundary Detection through Spatio-temporal Convolutional Neural Networks
cs.CV
Shot boundary detection (SBD) is an important pre-processing step for video manipulation. Here, each segment of frames is classified as either sharp, gradual or no transition. Current SBD techniques analyze hand-crafted features and attempt to optimize both detection accuracy and processing speed. However, the heavy co...
computer science
28,008
READ-BAD: A New Dataset and Evaluation Scheme for Baseline Detection in Archival Documents
cs.CV
Text line detection is crucial for any application associated with Automatic Text Recognition or Keyword Spotting. Modern algorithms perform good on well-established datasets since they either comprise clean data or simple/homogeneous page layouts. We have collected and annotated 2036 archival document images from diff...
computer science
28,009
Deep Person Re-Identification with Improved Embedding and Efficient Training
cs.CV
Person re-identification task has been greatly boosted by deep convolutional neural networks (CNNs) in recent years. The core of which is to enlarge the inter-class distinction as well as reduce the intra-class variance. However, to achieve this, existing deep models prefer to adopt image pairs or triplets to form veri...
computer science
28,010
Model Complexity-Accuracy Trade-off for a Convolutional Neural Network
cs.CV
Convolutional Neural Networks(CNN) has had a great success in the recent past, because of the advent of faster GPUs and memory access. CNNs are really powerful as they learn the features from data in layers such that they exhibit the structure of the V-1 features of the human brain. A huge bottleneck, in this case, is ...
computer science
28,011
Adaptive Regularization of Some Inverse Problems in Image Analysis
cs.CV
We present an adaptive regularization scheme for optimizing composite energy functionals arising in image analysis problems. The scheme automatically trades off data fidelity and regularization depending on the current data fit during the iterative optimization, so that regularization is strongest initially, and wanes ...
computer science
28,012
Skin lesion detection based on an ensemble of deep convolutional neural network
cs.CV
Skin cancer is a major public health problem, with over 5 million newly diagnosed cases in the United States each year. Melanoma is the deadliest form of skin cancer, responsible for over 9,000 deaths each year. In this paper, we propose an ensemble of deep convolutional neural networks to classify dermoscopy images in...
computer science
28,013
Bayesian Joint Topic Modelling for Weakly Supervised Object Localisation
cs.CV
We address the problem of localisation of objects as bounding boxes in images with weak labels. This weakly supervised object localisation problem has been tackled in the past using discriminative models where each object class is localised independently from other classes. We propose a novel framework based on Bayesia...
computer science
28,014
Cell Tracking via Proposal Generation and Selection
cs.CV
Microscopy imaging plays a vital role in understanding many biological processes in development and disease. The recent advances in automation of microscopes and development of methods and markers for live cell imaging has led to rapid growth in the amount of image data being captured. To efficiently and reliably extra...
computer science
28,015
Deep Projective 3D Semantic Segmentation
cs.CV
Semantic segmentation of 3D point clouds is a challenging problem with numerous real-world applications. While deep learning has revolutionized the field of image semantic segmentation, its impact on point cloud data has been limited so far. Recent attempts, based on 3D deep learning approaches (3D-CNNs), have achieved...
computer science
28,016
Multi-Scale Spatially Weighted Local Histograms in O(1)
cs.CV
Weighting pixel contribution considering its location is a key feature in many fundamental image processing tasks including filtering, object modeling and distance matching. Several techniques have been proposed that incorporate Spatial information to increase the accuracy and boost the performance of detection, tracki...
computer science
28,017
Learning RGB-D Salient Object Detection using background enclosure, depth contrast, and top-down features
cs.CV
Recently, deep Convolutional Neural Networks (CNN) have demonstrated strong performance on RGB salient object detection. Although, depth information can help improve detection results, the exploration of CNNs for RGB-D salient object detection remains limited. Here we propose a novel deep CNN architecture for RGB-D sal...
computer science
28,018
4d isip: 4d implicit surface interest point detection
cs.CV
In this paper, we propose a new method to detect 4D spatiotemporal interest points though an implicit surface, we refer to as the 4D-ISIP. We use a 3D volume which has a truncated signed distance function(TSDF) for every voxel to represent our 3D object model. The TSDF represents the distance between the spatial points...
computer science
28,019
Context-aware stacked convolutional neural networks for classification of breast carcinomas in whole-slide histopathology images
cs.CV
Automated classification of histopathological whole-slide images (WSI) of breast tissue requires analysis at very high resolutions with a large contextual area. In this paper, we present context-aware stacked convolutional neural networks (CNN) for classification of breast WSIs into normal/benign, ductal carcinoma in s...
computer science
28,020
Efficient and Scalable View Generation from a Single Image using Fully Convolutional Networks
cs.CV
Single-image-based view generation (SIVG) is important for producing 3D stereoscopic content. Here, handling different spatial resolutions as input and optimizing both reconstruction accuracy and processing speed is desirable. Latest approaches are based on convolutional neural network (CNN), and they generate promisin...
computer science
28,021
Automatic Brain Tumor Detection and Segmentation Using U-Net Based Fully Convolutional Networks
cs.CV
A major challenge in brain tumor treatment planning and quantitative evaluation is determination of the tumor extent. The noninvasive magnetic resonance imaging (MRI) technique has emerged as a front-line diagnostic tool for brain tumors without ionizing radiation. Manual segmentation of brain tumor extent from 3D MRI ...
computer science
28,022
Predicting the Driver's Focus of Attention: the DR(eye)VE Project
cs.CV
In this work we aim to predict the driver's focus of attention. The goal is to estimate what a person would pay attention to while driving, and which part of the scene around the vehicle is more critical for the task. To this end we propose a new computer vision model based on a multi-branch deep architecture that inte...
computer science
28,023
An Improved Video Analysis using Context based Extension of LSH
cs.CV
Locality Sensitive Hashing (LSH) based algorithms have already shown their promise in finding approximate nearest neighbors in high dimen- sional data space. However, there are certain scenarios, as in sequential data, where the proximity of a pair of points cannot be captured without considering their surroundings or ...
computer science
28,024
Learning 3D Object Categories by Looking Around Them
cs.CV
Traditional approaches for learning 3D object categories use either synthetic data or manual supervision. In this paper, we propose a method which does not require manual annotations and is instead cued by observing objects from a moving vantage point. Our system builds on two innovations: a Siamese viewpoint factoriza...
computer science
28,025
Distribution of degrees of freedom over structure and motion of rigid bodies
cs.CV
This paper is concerned with recovery of motion and structure parameters from multiframes under orthogonal projection when only points are traced. The main question is how many points and/or how many frames are necessary for the task. It is demonstrated that 3 frames and 3 points are the absolute minimum. Closed-form s...
computer science
28,026
SCNet: Learning Semantic Correspondence
cs.CV
This paper addresses the problem of establishing semantic correspondences between images depicting different instances of the same object or scene category. Previous approaches focus on either combining a spatial regularizer with hand-crafted features, or learning a correspondence model for appearance only. We propose ...
computer science
28,027
Neural Style Transfer: A Review
cs.CV
The recent work of Gatys et al. demonstrated the power of Convolutional Neural Networks (CNN) in creating artistic fantastic imagery by separating and recombing the image content and style. This process of using CNN to migrate the semantic content of one image to different styles is referred to as Neural Style Transfer...
computer science
28,028
A Generative Model of People in Clothing
cs.CV
We present the first image-based generative model of people in clothing for the full body. We sidestep the commonly used complex graphics rendering pipeline and the need for high-quality 3D scans of dressed people. Instead, we learn generative models from a large image database. The main challenge is to cope with the h...
computer science
28,029
Obstacle Avoidance Using Stereo Camera
cs.CV
In this paper we present a novel method for obstacle avoidance using the stereo camera. The conventional obstacle avoidance methods and their limitations are discussed. A new algorithm is developed for the real-time obstacle avoidance which responds faster to unexpected obstacles. In this approach the depth map is divi...
computer science
28,030
Probabilistic Image Colorization
cs.CV
We develop a probabilistic technique for colorizing grayscale natural images. In light of the intrinsic uncertainty of this task, the proposed probabilistic framework has numerous desirable properties. In particular, our model is able to produce multiple plausible and vivid colorizations for a given grayscale image and...
computer science
28,031
Improved underwater image enhancement algorithms based on partial differential equations (PDEs)
cs.CV
The experimental results of improved underwater image enhancement algorithms based on partial differential equations (PDEs) are presented in this report. This second work extends the study of previous work and incorporating several improvements into the revised algorithm. Experiments show the evidence of the improvemen...
computer science
28,032
SEAGLE: Sparsity-Driven Image Reconstruction under Multiple Scattering
cs.CV
Multiple scattering of an electromagnetic wave as it passes through an object is a fundamental problem that limits the performance of current imaging systems. In this paper, we describe a new technique-called Series Expansion with Accelerated Gradient Descent on Lippmann-Schwinger Equation (SEAGLE)-for robust imaging u...
computer science
28,033
Challenges in Monocular Visual Odometry: Photometric Calibration, Motion Bias and Rolling Shutter Effect
cs.CV
Monocular visual odometry (VO) has seen tremendous improvements in accuracy, robustness and efficiency, and has gained exponential popularity over recent years. Nevertheless, no comprehensive evaluations have been performed to reveal the influences of the three easily overlooked, yet very influential aspects: photometr...
computer science
28,034
A Feature Embedding Strategy for High-level CNN representations from Multiple ConvNets
cs.CV
Following the rapidly growing digital image usage, automatic image categorization has become preeminent research area. It has broaden and adopted many algorithms from time to time, whereby multi-feature (generally, hand-engineered features) based image characterization comes handy to improve accuracy. Recently, in mach...
computer science
28,035
An Optimal Dimensionality Multi-shell Sampling Scheme with Accurate and Efficient Transforms for Diffusion MRI
cs.CV
This paper proposes a multi-shell sampling scheme and corresponding transforms for the accurate reconstruction of the diffusion signal in diffusion MRI by expansion in the spherical polar Fourier (SPF) basis. The sampling scheme uses an optimal number of samples, equal to the degrees of freedom of the band-limited diff...
computer science
28,036
Reconfiguring the Imaging Pipeline for Computer Vision
cs.CV
Advancements in deep learning have ignited an explosion of research on efficient hardware for embedded computer vision. Hardware vision acceleration, however, does not address the cost of capturing and processing the image data that feeds these algorithms. We examine the role of the image signal processing (ISP) pipeli...
computer science
28,037
Object-Level Context Modeling For Scene Classification with Context-CNN
cs.CV
Convolutional Neural Networks (CNNs) have been used extensively for computer vision tasks and produce rich feature representation for objects or parts of an image. But reasoning about scenes requires integration between the low-level feature representations and the high-level semantic information. We propose a deep net...
computer science
28,038
Transfer Learning for Cross-Dataset Recognition: A Survey
cs.CV
This paper summarises and analyses the cross-dataset recognition transfer learning techniques with the emphasis on what kinds of methods can be used when the available source and target data are presented in different forms for boosting the target task. This paper for the first time summarises several transferring crit...
computer science
28,039
Negative Results in Computer Vision: A Perspective
cs.CV
A negative result is when the outcome of an experiment or a model is not what is expected or when a hypothesis does not hold. Despite being often overlooked in the scientific community, negative results are results and they carry value. While this topic has been extensively discussed in other fields such as social scie...
computer science
28,040
View-Invariant Template Matching Using Homography Constraints
cs.CV
Change in viewpoint is one of the major factors for variation in object appearance across different images. Thus, view-invariant object recognition is a challenging and important image understanding task. In this paper, we propose a method that can match objects in images taken under different viewpoints. Unlike most m...
computer science
28,041
Adaptive Feature Representation for Visual Tracking
cs.CV
Robust feature representation plays significant role in visual tracking. However, it remains a challenging issue, since many factors may affect the experimental performance. The existing method which combine different features by setting them equally with the fixed weight could hardly solve the issues, due to the diffe...
computer science
28,042
Using Satellite Imagery for Good: Detecting Communities in Desert and Mapping Vaccination Activities
cs.CV
Deep convolutional neural networks (CNNs) have outperformed existing object recognition and detection algorithms. On the other hand satellite imagery captures scenes that are diverse. This paper describes a deep learning approach that analyzes a geo referenced satellite image and efficiently detects built structures in...
computer science
28,043
Learning to Refine Object Contours with a Top-Down Fully Convolutional Encoder-Decoder Network
cs.CV
We develop a novel deep contour detection algorithm with a top-down fully convolutional encoder-decoder network. Our proposed method, named TD-CEDN, solves two important issues in this low-level vision problem: (1) learning multi-scale and multi-level features; and (2) applying an effective top-down refined approach in...
computer science
28,044
TraX: The visual Tracking eXchange Protocol and Library
cs.CV
In this paper we address the problem of developing on-line visual tracking algorithms. We present a specialized communication protocol that serves as a bridge between a tracker implementation and utilizing application. It decouples development of algorithms and application, encouraging re-usability. The primary use cas...
computer science
28,045
External Prior Guided Internal Prior Learning for Real Noisy Image Denoising
cs.CV
Most of existing image denoising methods learn image priors from either external data or the noisy image itself to remove noise. However, priors learned from external data may not be adaptive to the image to be denoised, while priors learned from the given noisy image may not be accurate due to the interference of corr...
computer science
28,046
Spatial-Temporal Recurrent Neural Network for Emotion Recognition
cs.CV
Emotion analysis is a crucial problem to endow artifact machines with real intelligence in many large potential applications. As external appearances of human emotions, electroencephalogram (EEG) signals and video face signals are widely used to track and analyze human's affective information. According to their common...
computer science
28,047
Detection of irregular QRS complexes using Hermite Transform and Support Vector Machine
cs.CV
Computer based recognition and detection of abnormalities in ECG signals is proposed. For this purpose, the Support Vector Machines (SVM) are combined with the advantages of Hermite transform representation. SVM represent a special type of classification techniques commonly used in medical applications. Automatic class...
computer science
28,048
Self-Committee Approach for Image Restoration Problems using Convolutional Neural Network
cs.CV
There have been many discriminative learning methods using convolutional neural networks (CNN) for several image restoration problems, which learn the mapping function from a degraded input to the clean output. In this letter, we propose a self-committee method that can find enhanced restoration results from the multip...
computer science
28,049
Towards a Principled Integration of Multi-Camera Re-Identification and Tracking through Optimal Bayes Filters
cs.CV
With the rise of end-to-end learning through deep learning, person detectors and re-identification (ReID) models have recently become very strong. Multi-camera multi-target (MCMT) tracking has not fully gone through this transformation yet. We intend to take another step in this direction by presenting a theoretically ...
computer science
28,050
Single Image Action Recognition by Predicting Space-Time Saliency
cs.CV
We propose a novel approach based on deep Convolutional Neural Networks (CNN) to recognize human actions in still images by predicting the future motion, and detecting the shape and location of the salient parts of the image. We make the following major contributions to this important area of research: (i) We use the p...
computer science
28,051
Combination of Hidden Markov Random Field and Conjugate Gradient for Brain Image Segmentation
cs.CV
Image segmentation is the process of partitioning the image into significant regions easier to analyze. Nowadays, segmentation has become a necessity in many practical medical imaging methods as locating tumors and diseases. Hidden Markov Random Field model is one of several techniques used in image segmentation. It pr...
computer science
28,052
Deep neural networks on graph signals for brain imaging analysis
cs.CV
Brain imaging data such as EEG or MEG are high-dimensional spatiotemporal data often degraded by complex, non-Gaussian noise. For reliable analysis of brain imaging data, it is important to extract discriminative, low-dimensional intrinsic representation of the recorded data. This work proposes a new method to learn th...
computer science
28,053
Revisiting IM2GPS in the Deep Learning Era
cs.CV
Image geolocalization, inferring the geographic location of an image, is a challenging computer vision problem with many potential applications. The recent state-of-the-art approach to this problem is a deep image classification approach in which the world is spatially divided into cells and a deep network is trained t...
computer science
28,054
Spatial-Temporal Union of Subspaces for Multi-body Non-rigid Structure-from-Motion
cs.CV
Non-rigid structure-from-motion (NRSfM) has so far been mostly studied for recovering 3D structure of a single non-rigid/deforming object. To handle the real world challenging multiple deforming objects scenarios, existing methods either pre-segment different objects in the scene or treat multiple non-rigid objects as ...
computer science
28,055
Discovery and visualization of structural biomarkers from MRI using transport-based morphometry
cs.CV
Disease in the brain is often associated with subtle, spatially diffuse, or complex tissue changes that may lie beneath the level of gross visual inspection, even on magnetic resonance imaging (MRI). Unfortunately, current computer-assisted approaches that examine pre-specified features, whether anatomically-defined (i...
computer science
28,056
Gland Segmentation in Histopathology Images Using Random Forest Guided Boundary Construction
cs.CV
Grading of cancer is important to know the extent of its spread. Prior to grading, segmentation of glandular structures is important. Manual segmentation is a time consuming process and is subject to observer bias. Hence, an automated process is required to segment the gland structures. These glands show a large variat...
computer science
28,057
A Closed-Form Model for Image-Based Distant Lighting
cs.CV
In this paper, we present a new mathematical foundation for image-based lighting. Using a simple manipulation of the local coordinate system, we derive a closed-form solution to the light integral equation under distant environment illumination. We derive our solution for different BRDF's such as lambertian and Phong-l...
computer science
28,058
Machine learning methods for multimedia information retrieval
cs.CV
In this thesis we examined several multimodal feature extraction and learning methods for retrieval and classification purposes. We reread briefly some theoretical results of learning in Section 2 and reviewed several generative and discriminative models in Section 3 while we described the similarity kernel in Section ...
computer science
28,059
Single Image Super-Resolution Using Multi-Scale Convolutional Neural Network
cs.CV
Methods based on convolutional neural network (CNN) have demonstrated tremendous improvements on single image super-resolution. However, the previous methods mainly restore images from one single area in the low resolution (LR) input, which limits the flexibility of models to infer various scales of details for high re...
computer science
28,060
Learning Semantics for Image Annotation
cs.CV
Image search and retrieval engines rely heavily on textual annotation in order to match word queries to a set of candidate images. A system that can automatically annotate images with meaningful text can be highly beneficial for such engines. Currently, the approaches to develop such systems try to establish relationsh...
computer science
28,061
A Perceptually Weighted Rank Correlation Indicator for Objective Image Quality Assessment
cs.CV
In the field of objective image quality assessment (IQA), the Spearman's $\rho$ and Kendall's $\tau$ are two most popular rank correlation indicators, which straightforwardly assign uniform weight to all quality levels and assume each pair of images are sortable. They are successful for measuring the average accuracy o...
computer science
28,062
Design of a Very Compact CNN Classifier for Online Handwritten Chinese Character Recognition Using DropWeight and Global Pooling
cs.CV
Currently, owing to the ubiquity of mobile devices, online handwritten Chinese character recognition (HCCR) has become one of the suitable choice for feeding input to cell phones and tablet devices. Over the past few years, larger and deeper convolutional neural networks (CNNs) have extensively been employed for improv...
computer science
28,063
View-invariant Gait Recognition through Genetic Template Segmentation
cs.CV
Template-based model-free approach provides by far the most successful solution to the gait recognition problem in literature. Recent work discusses how isolating the head and leg portion of the template increase the performance of a gait recognition system making it robust against covariates like clothing and carrying...
computer science
28,064
Back to RGB: 3D tracking of hands and hand-object interactions based on short-baseline stereo
cs.CV
We present a novel solution to the problem of 3D tracking of the articulated motion of human hand(s), possibly in interaction with other objects. The vast majority of contemporary relevant work capitalizes on depth information provided by RGBD cameras. In this work, we show that accurate and efficient 3D hand tracking ...
computer science
28,065
A Deep Learning Based 6 Degree-of-Freedom Localization Method for Endoscopic Capsule Robots
cs.CV
We present a robust deep learning based 6 degrees-of-freedom (DoF) localization system for endoscopic capsule robots. Our system mainly focuses on localization of endoscopic capsule robots inside the GI tract using only visual information captured by a mono camera integrated to the robot. The proposed system is a 23-la...
computer science
28,066
A Non-Rigid Map Fusion-Based RGB-Depth SLAM Method for Endoscopic Capsule Robots
cs.CV
In the gastrointestinal (GI) tract endoscopy field, ingestible wireless capsule endoscopy is considered as a minimally invasive novel diagnostic technology to inspect the entire GI tract and to diagnose various diseases and pathologies. Since the development of this technology, medical device companies and many groups ...
computer science
28,067
Handwritten Urdu Character Recognition using 1-Dimensional BLSTM Classifier
cs.CV
The recognition of cursive script is regarded as a subtle task in optical character recognition due to its varied representation. Every cursive script has different nature and associated challenges. As Urdu is one of cursive language that is derived from Arabic script, thats why it nearly shares the same challenges and...
computer science
28,068
WordFence: Text Detection in Natural Images with Border Awareness
cs.CV
In recent years, text recognition has achieved remarkable success in recognizing scanned document text. However, word recognition in natural images is still an open problem, which generally requires time consuming post-processing steps. We present a novel architecture for individual word detection in scene images based...
computer science
28,069
Joint Geometrical and Statistical Alignment for Visual Domain Adaptation
cs.CV
This paper presents a novel unsupervised domain adaptation method for cross-domain visual recognition. We propose a unified framework that reduces the shift between domains both statistically and geometrically, referred to as Joint Geometrical and Statistical Alignment (JGSA). Specifically, we learn two coupled project...
computer science
28,070
Cooperative Learning with Visual Attributes
cs.CV
Learning paradigms involving varying levels of supervision have received a lot of interest within the computer vision and machine learning communities. The supervisory information is typically considered to come from a human supervisor -- a "teacher" figure. In this paper, we consider an alternate source of supervision...
computer science
28,071
Intel RealSense Stereoscopic Depth Cameras
cs.CV
We present a comprehensive overview of the stereoscopic Intel RealSense RGBD imaging systems. We discuss these systems' mode-of-operation, functional behavior and include models of their expected performance, shortcomings, and limitations. We provide information about the systems' optical characteristics, their correla...
computer science
28,072
IAN: The Individual Aggregation Network for Person Search
cs.CV
Person search in real-world scenarios is a new challenging computer version task with many meaningful applications. The challenge of this task mainly comes from: (1) unavailable bounding boxes for pedestrians and the model needs to search for the person over the whole gallery images; (2) huge variance of visual appeara...
computer science
28,073
Research on Bi-mode Biometrics Based on Deep Learning
cs.CV
In view of the fact that biological characteristics have excellent independent distinguishing characteristics,biometric identification technology involves almost all the relevant areas of human distinction. Fingerprints, iris, face, voice-print and other biological features have been widely used in the public security ...
computer science
28,074
WebVision Challenge: Visual Learning and Understanding With Web Data
cs.CV
We present the 2017 WebVision Challenge, a public image recognition challenge designed for deep learning based on web images without instance-level human annotation. Following the spirit of previous vision challenges, such as ILSVRC, Places2 and PASCAL VOC, which have played critical roles in the development of compute...
computer science
28,075
Active Control of Camera Parameters for Object Detection Algorithms
cs.CV
Camera parameters not only play an important role in determining the visual quality of perceived images, but also affect the performance of vision algorithms, for a vision-guided robot. By quantitatively evaluating four object detection algorithms, with respect to varying ambient illumination, shutter speed and voltage...
computer science
28,076
Motion-Compensated Temporal Filtering for Critically-Sampled Wavelet-Encoded Images
cs.CV
We propose a novel motion estimation/compensation (ME/MC) method for wavelet-based (in-band) motion compensated temporal filtering (MCTF), with application to low-bitrate video coding. Unlike the conventional in-band MCTF algorithms, which require redundancy to overcome the shift-variance problem of critically sampled ...
computer science
28,077
Volumetric Super-Resolution of Multispectral Data
cs.CV
Most multispectral remote sensors (e.g. QuickBird, IKONOS, and Landsat 7 ETM+) provide low-spatial high-spectral resolution multispectral (MS) or high-spatial low-spectral resolution panchromatic (PAN) images, separately. In order to reconstruct a high-spatial/high-spectral resolution multispectral image volume, either...
computer science
28,078
Learning Features for Offline Handwritten Signature Verification using Deep Convolutional Neural Networks
cs.CV
Verifying the identity of a person using handwritten signatures is challenging in the presence of skilled forgeries, where a forger has access to a person's signature and deliberately attempt to imitate it. In offline (static) signature verification, the dynamic information of the signature writing process is lost, and...
computer science
28,079
What's In A Patch, I: Tensors, Differential Geometry and Statistical Shading Analysis
cs.CV
We develop a linear algebraic framework for the shape-from-shading problem, because tensors arise when scalar (e.g. image) and vector (e.g. surface normal) fields are differentiated multiple times. The work is in two parts. In this first part we investigate when image derivatives exhibit invariance to changing illumina...
computer science
28,080
What's In A Patch, II: Visualizing generic surfaces
cs.CV
We continue the development of a linear algebraic framework for the shape-from-shading problem, exploiting the manner in which tensors arise when scalar (e.g. image) and vector (e.g. surface normal) fields are differentiated multiple times. In this paper we apply that framework to develop Taylor expansions of the norma...
computer science
28,081
LCDet: Low-Complexity Fully-Convolutional Neural Networks for Object Detection in Embedded Systems
cs.CV
Deep convolutional Neural Networks (CNN) are the state-of-the-art performers for object detection task. It is well known that object detection requires more computation and memory than image classification. Thus the consolidation of a CNN-based object detection for an embedded system is more challenging. In this work, ...
computer science
28,082
Learning a Hierarchical Latent-Variable Model of 3D Shapes
cs.CV
We propose the Variational Shape Learner (VSL), a hierarchical latent-variable model for 3D shape learning. VSL employs an unsupervised approach to learning and inferring the underlying structure of voxelized 3D shapes. Through the use of skip-connections, our model can successfully learn a latent, hierarchical represe...
computer science
28,083
Automatic Vertebra Labeling in Large-Scale 3D CT using Deep Image-to-Image Network with Message Passing and Sparsity Regularization
cs.CV
Automatic localization and labeling of vertebra in 3D medical images plays an important role in many clinical tasks, including pathological diagnosis, surgical planning and postoperative assessment. However, the unusual conditions of pathological cases, such as the abnormal spine curvature, bright visual imaging artifa...
computer science
28,084
PaMM: Pose-aware Multi-shot Matching for Improving Person Re-identification
cs.CV
Person re-identification is the problem of recognizing people across different images or videos with non-overlapping views. Although there has been much progress in person re-identification over the last decade, it remains a challenging task because appearances of people can seem extremely different across diverse came...
computer science
28,085
Robust Registration of Gaussian Mixtures for Colour Transfer
cs.CV
We present a flexible approach to colour transfer inspired by techniques recently proposed for shape registration. Colour distributions of the palette and target images are modelled with Gaussian Mixture Models (GMMs) that are robustly registered to infer a non linear parametric transfer function. We show experimentall...
computer science
28,086
Magnetic-Visual Sensor Fusion based Medical SLAM for Endoscopic Capsule Robot
cs.CV
A reliable, real-time simultaneous localization and mapping (SLAM) method is crucial for the navigation of actively controlled capsule endoscopy robots. These robots are an emerging, minimally invasive diagnostic and therapeutic technology for use in the gastrointestinal (GI) tract. In this study, we propose a dense, n...
computer science
28,087
A deep level set method for image segmentation
cs.CV
This paper proposes a novel image segmentation approachthat integrates fully convolutional networks (FCNs) with a level setmodel. Compared with a FCN, the integrated method can incorporatesmoothing and prior information to achieve an accurate segmentation.Furthermore, different than using the level set model as a post-...
computer science
28,088
Deep Diagnostics: Applying Convolutional Neural Networks for Vessels Defects Detection
cs.CV
Coronary angiography is considered to be a safe tool for the evaluation of coronary artery disease and perform in approximately 12 million patients each year worldwide. [1] In most cases, angiograms are manually analyzed by a cardiologist. Actually, there are no clinical practice algorithms which could improve and auto...
computer science
28,089
Bayer Demosaicking Using Optimized Mean Curvature over RGB channels
cs.CV
Color artifacts of demosaicked images are often found at contours due to interpolation across edges and cross-channel aliasing. To tackle this problem, we propose a novel demosaicking method to reliably reconstruct color channels of a Bayer image based on two different optimized mean-curvature (MC) models. The missing ...
computer science
28,090
Optimizing and Visualizing Deep Learning for Benign/Malignant Classification in Breast Tumors
cs.CV
Breast cancer has the highest incidence and second highest mortality rate for women in the US. Our study aims to utilize deep learning for benign/malignant classification of mammogram tumors using a subset of cases from the Digital Database of Screening Mammography (DDSM). Though it was a small dataset from the view of...
computer science
28,091
Re3 : Real-Time Recurrent Regression Networks for Visual Tracking of Generic Objects
cs.CV
Robust object tracking requires knowledge and understanding of the object being tracked: its appearance, its motion, and how it changes over time. A tracker must be able to modify its underlying model and adapt to new observations. We present Re3, a real-time deep object tracker capable of incorporating temporal inform...
computer science
28,092
Fashion Forward: Forecasting Visual Style in Fashion
cs.CV
What is the future of fashion? Tackling this question from a data-driven vision perspective, we propose to forecast visual style trends before they occur. We introduce the first approach to predict the future popularity of styles discovered from fashion images in an unsupervised manner. Using these styles as a basis, w...
computer science
28,093
Probabilistic Combination of Noisy Points and Planes for RGB-D Odometry
cs.CV
This work proposes a visual odometry method that combines points and plane primitives, extracted from a noisy depth camera. Depth measurement uncertainty is modelled and propagated through the extraction of geometric primitives to the frame-to-frame motion estimation, where pose is optimized by weighting the residuals ...
computer science
28,094
A fully dense and globally consistent 3D map reconstruction approach for GI tract to enhance therapeutic relevance of the endoscopic capsule robot
cs.CV
In the gastrointestinal (GI) tract endoscopy field, ingestible wireless capsule endoscopy is emerging as a novel, minimally invasive diagnostic technology for inspection of the GI tract and diagnosis of a wide range of diseases and pathologies. Since the development of this technology, medical device companies and many...
computer science
28,095
Agent-Centric Risk Assessment: Accident Anticipation and Risky Region Localization
cs.CV
For survival, a living agent must have the ability to assess risk (1) by temporally anticipating accidents before they occur, and (2) by spatially localizing risky regions in the environment to move away from threats. In this paper, we take an agent-centric approach to study the accident anticipation and risky region l...
computer science
28,096
Localized LRR on Grassmann Manifolds: An Extrinsic View
cs.CV
Subspace data representation has recently become a common practice in many computer vision tasks. It demands generalizing classical machine learning algorithms for subspace data. Low-Rank Representation (LRR) is one of the most successful models for clustering vectorial data according to their subspace structures. This...
computer science
28,097
MUTAN: Multimodal Tucker Fusion for Visual Question Answering
cs.CV
Bilinear models provide an appealing framework for mixing and merging information in Visual Question Answering (VQA) tasks. They help to learn high level associations between question meaning and visual concepts in the image, but they suffer from huge dimensionality issues. We introduce MUTAN, a multimodal tensor-based...
computer science
28,098
Target-Quality Image Compression with Recurrent, Convolutional Neural Networks
cs.CV
We introduce a stop-code tolerant (SCT) approach to training recurrent convolutional neural networks for lossy image compression. Our methods introduce a multi-pass training method to combine the training goals of high-quality reconstructions in areas around stop-code masking as well as in highly-detailed areas. These ...
computer science
28,099
Model-based Catheter Segmentation in MRI-images
cs.CV
Accurate and reliable segmentation of catheters in MR-gui- ded interventions remains a challenge, and a step of critical importance in clinical workflows. In this work, under reasonable assumptions, me- chanical model based heuristics guide the segmentation process allows correct catheter identification rates greater t...
computer science
28,100
A General Model for Robust Tensor Factorization with Unknown Noise
cs.CV
Because of the limitations of matrix factorization, such as losing spatial structure information, the concept of low-rank tensor factorization (LRTF) has been applied for the recovery of a low dimensional subspace from high dimensional visual data. The low-rank tensor recovery is generally achieved by minimizing the lo...
computer science
28,101
Exploring the structure of a real-time, arbitrary neural artistic stylization network
cs.CV
In this paper, we present a method which combines the flexibility of the neural algorithm of artistic style with the speed of fast style transfer networks to allow real-time stylization using any content/style image pair. We build upon recent work leveraging conditional instance normalization for multi-style transfer n...
computer science