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28,902
Deep Generative Adversarial Neural Networks for Realistic Prostate Lesion MRI Synthesis
cs.CV
Generative Adversarial Neural Networks (GANs) are applied to the synthetic generation of prostate lesion MRI images. GANs have been applied to a variety of natural images, is shown show that the same techniques can be used in the medical domain to create realistic looking synthetic lesion images. 16mm x 16mm patches ar...
computer science
28,903
Parallel Tracking and Verifying: A Framework for Real-Time and High Accuracy Visual Tracking
cs.CV
Being intensively studied, visual tracking has seen great recent advances in either speed (e.g., with correlation filters) or accuracy (e.g., with deep features). Real-time and high accuracy tracking algorithms, however, remain scarce. In this paper we study the problem from a new perspective and present a novel parall...
computer science
28,904
Image Denoising via CNNs: An Adversarial Approach
cs.CV
Is it possible to recover an image from its noisy version using convolutional neural networks? This is an interesting problem as convolutional layers are generally used as feature detectors for tasks like classification, segmentation and object detection. We present a new CNN architecture for blind image denoising whic...
computer science
28,905
Towards Vision-Based Smart Hospitals: A System for Tracking and Monitoring Hand Hygiene Compliance
cs.CV
One in twenty-five patients admitted to a hospital will suffer from a hospital acquired infection. If we can intelligently track healthcare staff, patients, and visitors, we can better understand the sources of such infections. We envision a smart hospital capable of increasing operational efficiency and improving pati...
computer science
28,906
A Locally Weighted Fixation Density-Based Metric for Assessing the Quality of Visual Saliency Predictions
cs.CV
With the increased focus on visual attention (VA) in the last decade, a large number of computational visual saliency methods have been developed over the past few years. These models are traditionally evaluated by using performance evaluation metrics that quantify the match between predicted saliency and fixation data...
computer science
28,907
Model-based learning of local image features for unsupervised texture segmentation
cs.CV
Features that capture well the textural patterns of a certain class of images are crucial for the performance of texture segmentation methods. The manual selection of features or designing new ones can be a tedious task. Therefore, it is desirable to automatically adapt the features to a certain image or class of image...
computer science
28,908
Real-time Deep Video Deinterlacing
cs.CV
Interlacing is a widely used technique, for television broadcast and video recording, to double the perceived frame rate without increasing the bandwidth. But it presents annoying visual artifacts, such as flickering and silhouette "serration," during the playback. Existing state-of-the-art deinterlacing methods either...
computer science
28,909
Switching Convolutional Neural Network for Crowd Counting
cs.CV
We propose a novel crowd counting model that maps a given crowd scene to its density. Crowd analysis is compounded by myriad of factors like inter-occlusion between people due to extreme crowding, high similarity of appearance between people and background elements, and large variability of camera view-points. Current ...
computer science
28,910
HMM-based Indic Handwritten Word Recognition using Zone Segmentation
cs.CV
This paper presents a novel approach towards Indic handwritten word recognition using zone-wise information. Because of complex nature due to compound characters, modifiers, overlapping and touching, etc., character segmentation and recognition is a tedious job in Indic scripts (e.g. Devanagari, Bangla, Gurumukhi, and ...
computer science
28,911
CNN Cascades for Segmenting Whole Slide Images of the Kidney
cs.CV
Due to the increasing availability of whole slide scanners facilitating digitization of histopathological tissue, there is a strong demand for the development of computer based image analysis systems. In this work, the focus is on the segmentation of the glomeruli constituting a highly relevant structure in renal histo...
computer science
28,912
Learning Deep Convolutional Embeddings for Face Representation Using Joint Sample- and Set-based Supervision
cs.CV
In this work, we investigate several methods and strategies to learn deep embeddings for face recognition, using joint sample- and set-based optimization. We explain our framework that expands traditional learning with set-based supervision together with the strategies used to maintain set characteristics. We, then, br...
computer science
28,913
Dual Motion GAN for Future-Flow Embedded Video Prediction
cs.CV
Future frame prediction in videos is a promising avenue for unsupervised video representation learning. Video frames are naturally generated by the inherent pixel flows from preceding frames based on the appearance and motion dynamics in the video. However, existing methods focus on directly hallucinating pixel values,...
computer science
28,914
Best Viewpoint Tracking for Camera Mounted on Robotic Arm with Dynamic Obstacles
cs.CV
The problem of finding a next best viewpoint for 3D modeling or scene mapping has been explored in computer vision over the last decade. This paper tackles a similar problem, but with different characteristics. It proposes a method for dynamic next best viewpoint recovery of a target point while avoiding possible occlu...
computer science
28,915
Generative Semantic Manipulation with Contrasting GAN
cs.CV
Generative Adversarial Networks (GANs) have recently achieved significant improvement on paired/unpaired image-to-image translation, such as photo$\rightarrow$ sketch and artist painting style transfer. However, existing models can only be capable of transferring the low-level information (e.g. color or texture changes...
computer science
28,916
Self-Supervised Learning for Spinal MRIs
cs.CV
A significant proportion of patients scanned in a clinical setting have follow-up scans. We show in this work that such longitudinal scans alone can be used as a form of 'free' self-supervision for training a deep network. We demonstrate this self-supervised learning for the case of T2-weighted sagittal lumbar Magnetic...
computer science
28,917
Hand2Face: Automatic Synthesis and Recognition of Hand Over Face Occlusions
cs.CV
A person's face discloses important information about their affective state. Although there has been extensive research on recognition of facial expressions, the performance of existing approaches is challenged by facial occlusions. Facial occlusions are often treated as noise and discarded in recognition of affective ...
computer science
28,918
Segmentation of Glioma Tumors in Brain Using Deep Convolutional Neural Network
cs.CV
Detection of brain tumor using a segmentation based approach is critical in cases, where survival of a subject depends on an accurate and timely clinical diagnosis. Gliomas are the most commonly found tumors having irregular shape and ambiguous boundaries, making them one of the hardest tumors to detect. The automation...
computer science
28,919
Momo: Monocular Motion Estimation on Manifolds
cs.CV
Knowledge about the location of a vehicle is indispensable for autonomous driving. In order to apply global localisation methods, a pose prior must be known which can be obtained from visual odometry. The quality and robustness of that prior determine the success of localisation. Momo is a monocular frame-to-frame moti...
computer science
28,920
Depth Super-Resolution Meets Uncalibrated Photometric Stereo
cs.CV
A novel depth super-resolution approach for RGB-D sensors is presented. It disambiguates depth super-resolution through high-resolution photometric clues and, symmetrically, it disambiguates uncalibrated photometric stereo through low-resolution depth cues. To this end, an RGB-D sequence is acquired from the same viewi...
computer science
28,921
Dense Piecewise Planar RGB-D SLAM for Indoor Environments
cs.CV
The paper exploits weak Manhattan constraints to parse the structure of indoor environments from RGB-D video sequences in an online setting. We extend the previous approach for single view parsing of indoor scenes to video sequences and formulate the problem of recovering the floor plan of the environment as an optimal...
computer science
28,922
Automatic 3D Cardiovascular MR Segmentation with Densely-Connected Volumetric ConvNets
cs.CV
Automatic and accurate whole-heart and great vessel segmentation from 3D cardiac magnetic resonance (MR) images plays an important role in the computer-assisted diagnosis and treatment of cardiovascular disease. However, this task is very challenging due to ambiguous cardiac borders and large anatomical variations amon...
computer science
28,923
Kernalised Multi-resolution Convnet for Visual Tracking
cs.CV
Visual tracking is intrinsically a temporal problem. Discriminative Correlation Filters (DCF) have demonstrated excellent performance for high-speed generic visual object tracking. Built upon their seminal work, there has been a plethora of recent improvements relying on convolutional neural network (CNN) pretrained on...
computer science
28,924
Joint Transmission Map Estimation and Dehazing using Deep Networks
cs.CV
Single image haze removal is an extremely challenging problem due to its inherent ill-posed nature. Several prior-based and learning-based methods have been proposed in the literature to solve this problem and they have achieved superior results. However, most of the existing methods assume constant atmospheric light m...
computer science
28,925
A Learning-based Framework for Hybrid Depth-from-Defocus and Stereo Matching
cs.CV
Depth from defocus (DfD) and stereo matching are two most studied passive depth sensing schemes. The techniques are essentially complementary: DfD can robustly handle repetitive textures that are problematic for stereo matching whereas stereo matching is insensitive to defocus blurs and can handle large depth range. In...
computer science
28,926
A Simple Loss Function for Improving the Convergence and Accuracy of Visual Question Answering Models
cs.CV
Visual question answering as recently proposed multimodal learning task has enjoyed wide attention from the deep learning community. Lately, the focus was on developing new representation fusion methods and attention mechanisms to achieve superior performance. On the other hand, very little focus has been put on the mo...
computer science
28,927
Dual-Glance Model for Deciphering Social Relationships
cs.CV
Since the beginning of early civilizations, social relationships derived from each individual fundamentally form the basis of social structure in our daily life. In the computer vision literature, much progress has been made in scene understanding, such as object detection and scene parsing. Recent research focuses on ...
computer science
28,928
Temporal Dynamic Graph LSTM for Action-driven Video Object Detection
cs.CV
In this paper, we investigate a weakly-supervised object detection framework. Most existing frameworks focus on using static images to learn object detectors. However, these detectors often fail to generalize to videos because of the existing domain shift. Therefore, we investigate learning these detectors directly fro...
computer science
28,929
Action recognition by learning pose representations
cs.CV
Pose detection is one of the fundamental steps for the recognition of human actions. In this paper we propose a novel trainable detector for recognizing human poses based on the analysis of the skeleton. The main idea is that a skeleton pose can be described by the spatial arrangements of its joints. Starting from this...
computer science
28,930
Accurate Lung Segmentation via Network-Wise Training of Convolutional Networks
cs.CV
We introduce an accurate lung segmentation model for chest radiographs based on deep convolutional neural networks. Our model is based on atrous convolutional layers to increase the field-of-view of filters efficiently. To improve segmentation performances further, we also propose a multi-stage training strategy, netwo...
computer science
28,931
InfiniTAM v3: A Framework for Large-Scale 3D Reconstruction with Loop Closure
cs.CV
Volumetric models have become a popular representation for 3D scenes in recent years. One breakthrough leading to their popularity was KinectFusion, which focuses on 3D reconstruction using RGB-D sensors. However, monocular SLAM has since also been tackled with very similar approaches. Representing the reconstruction v...
computer science
28,932
Structure-measure: A New Way to Evaluate Foreground Maps
cs.CV
Foreground map evaluation is crucial for gauging the progress of object segmentation algorithms, in particular in the filed of salient object detection where the purpose is to accurately detect and segment the most salient object in a scene. Several widely-used measures such as Area Under the Curve (AUC), Average Preci...
computer science
28,933
Predictive Coding for Dynamic Visual Processing: Development of Functional Hierarchy in a Multiple Spatio-Temporal Scales RNN Model
cs.CV
The current paper proposes a novel predictive coding type neural network model, the predictive multiple spatio-temporal scales recurrent neural network (P-MSTRNN). The P-MSTRNN learns to predict visually perceived human whole-body cyclic movement patterns by exploiting multiscale spatio-temporal constraints imposed on ...
computer science
28,934
Land Cover Classification from Multi-temporal, Multi-spectral Remotely Sensed Imagery using Patch-Based Recurrent Neural Networks
cs.CV
Sustainability of the global environment is dependent on the accurate land cover information over large areas. Even with the increased number of satellite systems and sensors acquiring data with improved spectral, spatial, radiometric and temporal characteristics and the new data distribution policy, most existing land...
computer science
28,935
An End-to-End Compression Framework Based on Convolutional Neural Networks
cs.CV
Deep learning, e.g., convolutional neural networks (CNNs), has achieved great success in image processing and computer vision especially in high level vision applications such as recognition and understanding. However, it is rarely used to solve low-level vision problems such as image compression studied in this paper....
computer science
28,936
Fingerprint Extraction Using Smartphone Camera
cs.CV
In the previous decade, there has been a considerable rise in the usage of smartphones.Due to exorbitant advancement in technology, computational speed and quality of image capturing has increased considerably. With an increase in the need for remote fingerprint verification, smartphones can be used as a powerful alter...
computer science
28,937
PIVO: Probabilistic Inertial-Visual Odometry for Occlusion-Robust Navigation
cs.CV
This paper presents a novel method for visual-inertial odometry. The method is based on an information fusion framework employing low-cost IMU sensors and the monocular camera in a standard smartphone. We formulate a sequential inference scheme, where the IMU drives the dynamical model and the camera frames are used in...
computer science
28,938
Learning Spherical Convolution for Fast Features from 360° Imagery
cs.CV
While 360{\deg} cameras offer tremendous new possibilities in vision, graphics, and augmented reality, the spherical images they produce make core feature extraction non-trivial. Convolutional neural networks (CNNs) trained on images from perspective cameras yield "flat" filters, yet 360{\deg} images cannot be projecte...
computer science
28,939
Associative Domain Adaptation
cs.CV
We propose associative domain adaptation, a novel technique for end-to-end domain adaptation with neural networks, the task of inferring class labels for an unlabeled target domain based on the statistical properties of a labeled source domain. Our training scheme follows the paradigm that in order to effectively deriv...
computer science
28,940
Predicting Human Activities Using Stochastic Grammar
cs.CV
This paper presents a novel method to predict future human activities from partially observed RGB-D videos. Human activity prediction is generally difficult due to its non-Markovian property and the rich context between human and environments. We use a stochastic grammar model to capture the compositional structure o...
computer science
28,941
Semantic Instance Labeling Leveraging Hierarchical Segmentation
cs.CV
Most of the approaches for indoor RGBD semantic la- beling focus on using pixels or superpixels to train a classi- fier. In this paper, we implement a higher level segmentation using a hierarchy of superpixels to obtain a better segmen- tation for training our classifier. By focusing on meaningful segments that conform...
computer science
28,942
Generating High-Quality Crowd Density Maps using Contextual Pyramid CNNs
cs.CV
We present a novel method called Contextual Pyramid CNN (CP-CNN) for generating high-quality crowd density and count estimation by explicitly incorporating global and local contextual information of crowd images. The proposed CP-CNN consists of four modules: Global Context Estimator (GCE), Local Context Estimator (LCE)...
computer science
28,943
Low Dose CT Image Denoising Using a Generative Adversarial Network with Wasserstein Distance and Perceptual Loss
cs.CV
In this paper, we introduce a new CT image denoising method based on the generative adversarial network (GAN) with Wasserstein distance and perceptual similarity. The Wasserstein distance is a key concept of the optimal transform theory, and promises to improve the performance of the GAN. The perceptual loss compares t...
computer science
28,944
ORGB: Offset Correction in RGB Color Space for Illumination-Robust Image Processing
cs.CV
Single materials have colors which form straight lines in RGB space. However, in severe shadow cases, those lines do not intersect the origin, which is inconsistent with the description of most literature. This paper is concerned with the detection and correction of the offset between the intersection and origin. First...
computer science
28,945
3DFaceNet: Real-time Dense Face Reconstruction via Synthesizing Photo-realistic Face Images
cs.CV
With the powerfulness of convolution neural networks (CNN), CNN based face reconstruction has recently shown promising performance in reconstructing detailed face shape from 2D face images. The success of CNN-based methods relies on a large number of labeled data. The state-of-the-art synthesizes such data using a coar...
computer science
28,946
Extreme Low Resolution Activity Recognition with Multi-Siamese Embedding Learning
cs.CV
This paper presents an approach for recognizing human activities from extreme low resolution (e.g., 16x12) videos. Extreme low resolution recognition is not only necessary for analyzing actions at a distance but also is crucial for enabling privacy-preserving recognition of human activities. We design a new two-stream ...
computer science
28,947
Learning Accurate Low-Bit Deep Neural Networks with Stochastic Quantization
cs.CV
Low-bit deep neural networks (DNNs) become critical for embedded applications due to their low storage requirement and computing efficiency. However, they suffer much from the non-negligible accuracy drop. This paper proposes the stochastic quantization (SQ) algorithm for learning accurate low-bit DNNs. The motivation ...
computer science
28,948
Beyond Low Rank: A Data-Adaptive Tensor Completion Method
cs.CV
Low rank tensor representation underpins much of recent progress in tensor completion. In real applications, however, this approach is confronted with two challenging problems, namely (1) tensor rank determination; (2) handling real tensor data which only approximately fulfils the low-rank requirement. To address these...
computer science
28,949
When Kernel Methods meet Feature Learning: Log-Covariance Network for Action Recognition from Skeletal Data
cs.CV
Human action recognition from skeletal data is a hot research topic and important in many open domain applications of computer vision, thanks to recently introduced 3D sensors. In the literature, naive methods simply transfer off-the-shelf techniques from video to the skeletal representation. However, the current state...
computer science
28,950
What Will I Do Next? The Intention from Motion Experiment
cs.CV
In computer vision, video-based approaches have been widely explored for the early classification and the prediction of actions or activities. However, it remains unclear whether this modality (as compared to 3D kinematics) can still be reliable for the prediction of human intentions, defined as the overarching goal em...
computer science
28,951
Learning Feature Pyramids for Human Pose Estimation
cs.CV
Articulated human pose estimation is a fundamental yet challenging task in computer vision. The difficulty is particularly pronounced in scale variations of human body parts when camera view changes or severe foreshortening happens. Although pyramid methods are widely used to handle scale changes at inference time, lea...
computer science
28,952
A Unified View-Graph Selection Framework for Structure from Motion
cs.CV
View-graph is an essential input to large-scale structure from motion (SfM) pipelines. Accuracy and efficiency of large-scale SfM is crucially dependent on the input view-graph. Inconsistent or inaccurate edges can lead to inferior or wrong reconstruction. Most SfM methods remove `undesirable' images and pairs using se...
computer science
28,953
Automatic Segmentation and Disease Classification Using Cardiac Cine MR Images
cs.CV
Segmentation of the heart in cardiac cine MR is clinically used to quantify cardiac function. We propose a fully automatic method for segmentation and disease classification using cardiac cine MR images. A convolutional neural network (CNN) was designed to simultaneously segment the left ventricle (LV), right ventricle...
computer science
28,954
Three-dimensional planar model estimation using multi-constraint knowledge based on k-means and RANSAC
cs.CV
Plane model extraction from three-dimensional point clouds is a necessary step in many different applications such as planar object reconstruction, indoor mapping and indoor localization. Different RANdom SAmple Consensus (RANSAC)-based methods have been proposed for this purpose in recent years. In this study, we prop...
computer science
28,955
Deep MR to CT Synthesis using Unpaired Data
cs.CV
MR-only radiotherapy treatment planning requires accurate MR-to-CT synthesis. Current deep learning methods for MR-to-CT synthesis depend on pairwise aligned MR and CT training images of the same patient. However, misalignment between paired images could lead to errors in synthesized CT images. To overcome this, we pro...
computer science
28,956
Patch-based adaptive weighting with segmentation and scale (PAWSS) for visual tracking
cs.CV
Tracking-by-detection algorithms are widely used for visual tracking, where the problem is treated as a classification task where an object model is updated over time using online learning techniques. In challenging conditions where an object undergoes deformation or scale variations, the update step is prone to includ...
computer science
28,957
Unsupervised Video Understanding by Reconciliation of Posture Similarities
cs.CV
Understanding human activity and being able to explain it in detail surpasses mere action classification by far in both complexity and value. The challenge is thus to describe an activity on the basis of its most fundamental constituents, the individual postures and their distinctive transitions. Supervised learning of...
computer science
28,958
Recent Developments and Future Challenges in Medical Mixed Reality
cs.CV
Mixed Reality (MR) is of increasing interest within technology-driven modern medicine but is not yet used in everyday practice. This situation is changing rapidly, however, and this paper explores the emergence of MR technology and the importance of its utility within medical applications. A classification of medical M...
computer science
28,959
Real-time Geometry-Aware Augmented Reality in Minimally Invasive Surgery
cs.CV
The potential of Augmented Reality (AR) technology to assist minimally invasive surgeries (MIS) lies in its computational performance and accuracy in dealing with challenging MIS scenes. Even with the latest hardware and software technologies, achieving both real-time and accurate augmented information overlay in MIS i...
computer science
28,960
Unsupervised Representation Learning by Sorting Sequences
cs.CV
We present an unsupervised representation learning approach using videos without semantic labels. We leverage the temporal coherence as a supervisory signal by formulating representation learning as a sequence sorting task. We take temporally shuffled frames (i.e., in non-chronological order) as inputs and train a conv...
computer science
28,961
Automatic Spatially-aware Fashion Concept Discovery
cs.CV
This paper proposes an automatic spatially-aware concept discovery approach using weakly labeled image-text data from shopping websites. We first fine-tune GoogleNet by jointly modeling clothing images and their corresponding descriptions in a visual-semantic embedding space. Then, for each attribute (word), we generat...
computer science
28,962
μ-MAR: Multiplane 3D Marker based Registration for Depth-sensing Cameras
cs.CV
Many applications including object reconstruction, robot guidance, and scene mapping require the registration of multiple views from a scene to generate a complete geometric and appearance model of it. In real situations, transformations between views are unknown an it is necessary to apply expert inference to estimate...
computer science
28,963
On the Selective and Invariant Representation of DCNN for High-Resolution Remote Sensing Image Recognition
cs.CV
Human vision possesses strong invariance in image recognition. The cognitive capability of deep convolutional neural network (DCNN) is close to the human visual level because of hierarchical coding directly from raw image. Owing to its superiority in feature representation, DCNN has exhibited remarkable performance in ...
computer science
28,964
Video Salient Object Detection Using Spatiotemporal Deep Features
cs.CV
This paper presents a method for detecting salient objects in videos where temporal information in addition to spatial information is fully taken into account. Following recent reports on the advantage of deep features over conventional hand-crafted features, we propose the SpatioTemporal Deep (STD) feature that utiliz...
computer science
28,965
Correlation and Class Based Block Formation for Improved Structured Dictionary Learning
cs.CV
In recent years, the creation of block-structured dictionary has attracted a lot of interest. Learning such dictionaries involve two step process: block formation and dictionary update. Both these steps are important in producing an effective dictionary. The existing works mostly assume that the block structure is know...
computer science
28,966
Multi-modal Factorized Bilinear Pooling with Co-Attention Learning for Visual Question Answering
cs.CV
Visual question answering (VQA) is challenging because it requires a simultaneous understanding of both the visual content of images and the textual content of questions. The approaches used to represent the images and questions in a fine-grained manner and questions and to fuse these multi-modal features play key role...
computer science
28,967
Hierarchical Metric Learning for Fine Grained Image Classification
cs.CV
This paper deals with the problem of fine-grained image classification and introduces the notion of hierarchical metric learning for the same. It is indeed challenging to categorize fine-grained image classes merely in terms of a single level classifier given the subtle inter-class visual differences. In order to tackl...
computer science
28,968
Associations among Image Assessments as Cost Functions in Linear Decomposition: MSE, SSIM, and Correlation Coefficient
cs.CV
The traditional methods of image assessment, such as mean squared error (MSE), signal-to-noise ratio (SNR), and Peak signal-to-noise ratio (PSNR), are all based on the absolute error of images. Pearson's inner-product correlation coefficient (PCC) is also usually used to measure the similarity between images. Structura...
computer science
28,969
Augmented Reality Meets Computer Vision : Efficient Data Generation for Urban Driving Scenes
cs.CV
The success of deep learning in computer vision is based on availability of large annotated datasets. To lower the need for hand labeled images, virtually rendered 3D worlds have recently gained popularity. Creating realistic 3D content is challenging on its own and requires significant human effort. In this work, we p...
computer science
28,970
Sensing Urban Land-Use Patterns By Integrating Google Tensorflow And Scene-Classification Models
cs.CV
With the rapid progress of China's urbanization, research on the automatic detection of land-use patterns in Chinese cities is of substantial importance. Deep learning is an effective method to extract image features. To take advantage of the deep-learning method in detecting urban land-use patterns, we applied a trans...
computer science
28,971
Region-Based Multiscale Spatiotemporal Saliency for Video
cs.CV
Detecting salient objects from a video requires exploiting both spatial and temporal knowledge included in the video. We propose a novel region-based multiscale spatiotemporal saliency detection method for videos, where static features and dynamic features computed from the low and middle levels are combined together. ...
computer science
28,972
Localizing Moments in Video with Natural Language
cs.CV
We consider retrieving a specific temporal segment, or moment, from a video given a natural language text description. Methods designed to retrieve whole video clips with natural language determine what occurs in a video but not when. To address this issue, we propose the Moment Context Network (MCN) which effectively ...
computer science
28,973
Cut, Paste and Learn: Surprisingly Easy Synthesis for Instance Detection
cs.CV
A major impediment in rapidly deploying object detection models for instance detection is the lack of large annotated datasets. For example, finding a large labeled dataset containing instances in a particular kitchen is unlikely. Each new environment with new instances requires expensive data collection and annotation...
computer science
28,974
Better Together: Joint Reasoning for Non-rigid 3D Reconstruction with Specularities and Shading
cs.CV
We demonstrate the use of shape-from-shading (SfS) to improve both the quality and the robustness of 3D reconstruction of dynamic objects captured by a single camera. Unlike previous approaches that made use of SfS as a post-processing step, we offer a principled integrated approach that solves dynamic object tracking ...
computer science
28,975
Accelerated Image Reconstruction for Nonlinear Diffractive Imaging
cs.CV
The problem of reconstructing an object from the measurements of the light it scatters is common in numerous imaging applications. While the most popular formulations of the problem are based on linearizing the object-light relationship, there is an increased interest in considering nonlinear formulations that can acco...
computer science
28,976
Intrinsic3D: High-Quality 3D Reconstruction by Joint Appearance and Geometry Optimization with Spatially-Varying Lighting
cs.CV
We introduce a novel method to obtain high-quality 3D reconstructions from consumer RGB-D sensors. Our core idea is to simultaneously optimize for geometry encoded in a signed distance field (SDF), textures from automatically-selected keyframes, and their camera poses along with material and scene lighting. To this end...
computer science
28,977
Query-guided Regression Network with Context Policy for Phrase Grounding
cs.CV
Given a textual description of an image, phrase grounding localizes objects in the image referred by query phrases in the description. State-of-the-art methods address the problem by ranking a set of proposals based on the relevance to each query, which are limited by the performance of independent proposal generation ...
computer science
28,978
Deep Metric Learning with Angular Loss
cs.CV
The modern image search system requires semantic understanding of image, and a key yet under-addressed problem is to learn a good metric for measuring the similarity between images. While deep metric learning has yielded impressive performance gains by extracting high level abstractions from image data, a proper object...
computer science
28,979
Video Frame Interpolation via Adaptive Separable Convolution
cs.CV
Standard video frame interpolation methods first estimate optical flow between input frames and then synthesize an intermediate frame guided by motion. Recent approaches merge these two steps into a single convolution process by convolving input frames with spatially adaptive kernels that account for motion and re-samp...
computer science
28,980
Adversarial Robustness: Softmax versus Openmax
cs.CV
Deep neural networks (DNNs) provide state-of-the-art results on various tasks and are widely used in real world applications. However, it was discovered that machine learning models, including the best performing DNNs, suffer from a fundamental problem: they can unexpectedly and confidently misclassify examples formed ...
computer science
28,981
Optimizing Region Selection for Weakly Supervised Object Detection
cs.CV
Training object detectors with only image-level annotations is very challenging because the target objects are often surrounded by a large number of background clutters. Many existing approaches tackle this problem through object proposal mining. However, the collected positive regions are either low in precision or la...
computer science
28,982
Learning Discriminative Alpha-Beta-divergence for Positive Definite Matrices (Extended Version)
cs.CV
Symmetric positive definite (SPD) matrices are useful for capturing second-order statistics of visual data. To compare two SPD matrices, several measures are available, such as the affine-invariant Riemannian metric, Jeffreys divergence, Jensen-Bregman logdet divergence, etc.; however, their behaviors may be applicatio...
computer science
28,983
SurfaceNet: An End-to-end 3D Neural Network for Multiview Stereopsis
cs.CV
This paper proposes an end-to-end learning framework for multiview stereopsis. We term the network SurfaceNet. It takes a set of images and their corresponding camera parameters as input and directly infers the 3D model. The key advantage of the framework is that both photo-consistency as well geometric relations of th...
computer science
28,984
Interactively Transferring CNN Patterns for Part Localization
cs.CV
In the scenario of one/multi-shot learning, conventional end-to-end learning strategies without sufficient supervision are usually not powerful enough to learn correct patterns from noisy signals. Thus, given a CNN pre-trained for object classification, this paper proposes a method that first summarizes the knowledge h...
computer science
28,985
Interpreting CNN Knowledge via an Explanatory Graph
cs.CV
This paper learns a graphical model, namely an explanatory graph, which reveals the knowledge hierarchy hidden inside a pre-trained CNN. Considering that each filter in a conv-layer of a pre-trained CNN usually represents a mixture of object parts, we propose a simple yet efficient method to automatically disentangles ...
computer science
28,986
Detecting Noteheads in Handwritten Scores with ConvNets and Bounding Box Regression
cs.CV
Noteheads are the interface between the written score and music. Each notehead on the page signifies one note to be played, and detecting noteheads is thus an unavoidable step for Optical Music Recognition. Noteheads are clearly distinct objects, however, the variety of music notation handwriting makes noteheads harder...
computer science
28,987
Depth Adaptive Deep Neural Network for Semantic Segmentation
cs.CV
In this work, we present the depth-adaptive deep neural network using a depth map for semantic segmentation. Typical deep neural networks receive inputs at the predetermined locations regardless of the distance from the camera. This fixed receptive field presents a challenge to generalize the features of objects at var...
computer science
28,988
Automated Assessment of Facial Wrinkling: a case study on the effect of smoking
cs.CV
Facial wrinkle is one of the most prominent biological changes that accompanying the natural aging process. However, there are some external factors contributing to premature wrinkles development, such as sun exposure and smoking. Clinical studies have shown that heavy smoking causes premature wrinkles development. How...
computer science
28,989
Manifold Constrained Low-Rank Decomposition
cs.CV
Low-rank decomposition (LRD) is a state-of-the-art method for visual data reconstruction and modelling. However, it is a very challenging problem when the image data contains significant occlusion, noise, illumination variation, and misalignment from rotation or viewpoint changes. We leverage the specific structure of ...
computer science
28,990
Long Short-Term Memory Kalman Filters:Recurrent Neural Estimators for Pose Regularization
cs.CV
One-shot pose estimation for tasks such as body joint localization, camera pose estimation, and object tracking are generally noisy, and temporal filters have been extensively used for regularization. One of the most widely-used methods is the Kalman filter, which is both extremely simple and general. However, Kalman f...
computer science
28,991
End-to-end learning potentials for structured attribute prediction
cs.CV
We present a structured inference approach in deep neural networks for multiple attribute prediction. In attribute prediction, a common approach is to learn independent classifiers on top of a good feature representation. However, such classifiers assume conditional independence on features and do not explicitly consid...
computer science
28,992
EndNet: Sparse AutoEncoder Network for Endmember Extraction and Hyperspectral Unmixing
cs.CV
Data acquired from multi-channel sensors is a highly valuable asset to interpret the environment for a variety of remote sensing applications. However, low spatial resolution is a critical limitation for the sensors and the constituent materials of a scene can be mixed in different fractions due to their spatial intera...
computer science
28,993
Fully Convolutional Networks for Diabetic Foot Ulcer Segmentation
cs.CV
Diabetic Foot Ulcer (DFU) is a major complication of Diabetes, which if not managed properly can lead to amputation. DFU can appear anywhere on the foot and can vary in size, colour, and contrast depending on various pathologies. Current clinical approaches to DFU treatment rely on patients and clinician vigilance, whi...
computer science
28,994
Face Parsing via Recurrent Propagation
cs.CV
Face parsing is an important problem in computer vision that finds numerous applications including recognition and editing. Recently, deep convolutional neural networks (CNNs) have been applied to image parsing and segmentation with the state-of-the-art performance. In this paper, we propose a face parsing algorithm th...
computer science
28,995
Intensity Video Guided 4D Fusion for Improved Highly Dynamic 3D Reconstruction
cs.CV
The availability of high-speed 3D video sensors has greatly facilitated 3D shape acquisition of dynamic and deformable objects, but high frame rate 3D reconstruction is always degraded by spatial noise and temporal fluctuations. This paper presents a simple yet powerful intensity video guided multi-frame 4D fusion pipe...
computer science
28,996
PPR-FCN: Weakly Supervised Visual Relation Detection via Parallel Pairwise R-FCN
cs.CV
We aim to tackle a novel vision task called Weakly Supervised Visual Relation Detection (WSVRD) to detect "subject-predicate-object" relations in an image with object relation groundtruths available only at the image level. This is motivated by the fact that it is extremely expensive to label the combinatorial relation...
computer science
28,997
Accurate Light Field Depth Estimation with Superpixel Regularization over Partially Occluded Regions
cs.CV
Depth estimation is a fundamental problem for light field photography applications. Numerous methods have been proposed in recent years, which either focus on crafting cost terms for more robust matching, or on analyzing the geometry of scene structures embedded in the epipolar-plane images. Significant improvements ha...
computer science
28,998
Identity-Aware Textual-Visual Matching with Latent Co-attention
cs.CV
Textual-visual matching aims at measuring similarities between sentence descriptions and images. Most existing methods tackle this problem without effectively utilizing identity-level annotations. In this paper, we propose an identity-aware two-stage framework for the textual-visual matching problem. Our stage-1 CNN-LS...
computer science
28,999
Amulet: Aggregating Multi-level Convolutional Features for Salient Object Detection
cs.CV
Fully convolutional neural networks (FCNs) have shown outstanding performance in many dense labeling problems. One key pillar of these successes is mining relevant information from features in convolutional layers. However, how to better aggregate multi-level convolutional feature maps for salient object detection is u...
computer science
29,000
Focal Loss for Dense Object Detection
cs.CV
The highest accuracy object detectors to date are based on a two-stage approach popularized by R-CNN, where a classifier is applied to a sparse set of candidate object locations. In contrast, one-stage detectors that are applied over a regular, dense sampling of possible object locations have the potential to be faster...
computer science
29,001
Learning Uncertain Convolutional Features for Accurate Saliency Detection
cs.CV
Deep convolutional neural networks (CNNs) have delivered superior performance in many computer vision tasks. In this paper, we propose a novel deep fully convolutional network model for accurate salient object detection. The key contribution of this work is to learn deep uncertain convolutional features (UCF), which en...
computer science