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39,410
Clustering Based Feature Learning on Variable Stars
cs.CV
The success of automatic classification of variable stars strongly depends on the lightcurve representation. Usually, lightcurves are represented as a vector of many statistical descriptors designed by astronomers called features. These descriptors commonly demand significant computational power to calculate, require s...
computer science
39,411
Modular Tracking Framework: A Unified Approach to Registration based Tracking
cs.CV
This paper presents a modular, extensible and highly efficient open source framework for registration based tracking targeted at robotics applications. It is implemented entirely in C++ and is designed from the ground up to easily integrate with systems that support any of several major vision and robotics libraries in...
computer science
39,412
GOGMA: Globally-Optimal Gaussian Mixture Alignment
cs.CV
Gaussian mixture alignment is a family of approaches that are frequently used for robustly solving the point-set registration problem. However, since they use local optimisation, they are susceptible to local minima and can only guarantee local optimality. Consequently, their accuracy is strongly dependent on the quali...
computer science
39,413
Pattern recognition on the quantum Bloch sphere
cs.CV
We introduce a framework suitable for describing pattern recognition task using the mathematical language of density matrices. In particular, we provide a one-to-one correspondence between patterns and pure density operators. This correspondence enables us to: i) represent the Nearest Mean Classifier (NMC) in terms of ...
computer science
39,414
Interactive and Scale Invariant Segmentation of the Rectum/Sigmoid via User-Defined Templates
cs.CV
Among all types of cancer, gynecological malignancies belong to the 4th most frequent type of cancer among women. Besides chemotherapy and external beam radiation, brachytherapy is the standard procedure for the treatment of these malignancies. In the progress of treatment planning, localization of the tumor as the tar...
computer science
39,415
Photographic dataset: random peppercorns
cs.CV
This is a photographic dataset collected for testing image processing algorithms. The idea is to have sets of different but statistically similar images. In this work the images show randomly distributed peppercorns. The dataset is made available at www.fips.fi/photographic_dataset.php .
computer science
39,416
First Steps Toward Camera Model Identification with Convolutional Neural Networks
cs.CV
Detecting the camera model used to shoot a picture enables to solve a wide series of forensic problems, from copyright infringement to ownership attribution. For this reason, the forensic community has developed a set of camera model identification algorithms that exploit characteristic traces left on acquired images b...
computer science
39,417
Grading of Mammalian Cumulus Oocyte Complexes using Machine Learning for in Vitro Embryo Culture
cs.CV
Visual observation of Cumulus Oocyte Complexes provides only limited information about its functional competence, whereas the molecular evaluations methods are cumbersome or costly. Image analysis of mammalian oocytes can provide attractive alternative to address this challenge. However, it is complex, given the huge n...
computer science
39,418
Elastic Functional Coding of Riemannian Trajectories
cs.CV
Visual observations of dynamic phenomena, such as human actions, are often represented as sequences of smoothly-varying features . In cases where the feature spaces can be structured as Riemannian manifolds, the corresponding representations become trajectories on manifolds. Analysis of these trajectories is challengin...
computer science
39,419
Authenticating users through their arm movement patterns
cs.CV
In this paper, we propose four continuous authentication designs by using the characteristics of arm movements while individuals walk. The first design uses acceleration of arms captured by a smartwatch's accelerometer sensor, the second design uses the rotation of arms captured by a smartwatch's gyroscope sensor, thir...
computer science
39,420
Iterative Hough Forest with Histogram of Control Points for 6 DoF Object Registration from Depth Images
cs.CV
State-of-the-art techniques proposed for 6D object pose recovery depend on occlusion-free point clouds to accurately register objects in 3D space. To reduce this dependency, we introduce a novel architecture called Iterative Hough Forest with Histogram of Control Points that is capable of estimating occluded and clutte...
computer science
39,421
Revisiting Active Perception
cs.CV
Despite the recent successes in robotics, artificial intelligence and computer vision, a complete artificial agent necessarily must include active perception. A multitude of ideas and methods for how to accomplish this have already appeared in the past, their broader utility perhaps impeded by insufficient computationa...
computer science
39,422
Template Matching via Densities on the Roto-Translation Group
cs.CV
We propose a template matching method for the detection of 2D image objects that are characterized by orientation patterns. Our method is based on data representations via orientation scores, which are functions on the space of positions and orientations, and which are obtained via a wavelet-type transform. This new re...
computer science
39,423
Fast Optical Flow using Dense Inverse Search
cs.CV
Most recent works in optical flow extraction focus on the accuracy and neglect the time complexity. However, in real-life visual applications, such as tracking, activity detection and recognition, the time complexity is critical. We propose a solution with very low time complexity and competitive accuracy for the com...
computer science
39,424
A Novel Method for Extrinsic Calibration of a 2-D Laser-Rangefinder and a Camera
cs.CV
We present a novel solution for extrinsically calibrating a camera and a Laser Rangefinder (LRF) by computing the transformation between the camera frame and the LRF frame. Our method is applicable for LRFs which measure only a single plane. It does not rely on observing the laser plane in the camera image. Instead, we...
computer science
39,425
RISAS: A Novel Rotation, Illumination, Scale Invariant Appearance and Shape Feature
cs.RO
This paper presents a novel appearance and shape feature, RISAS, which is robust to viewpoint, illumination, scale and rotation variations. RISAS consists of a keypoint detector and a feature descriptor both of which utilise texture and geometric information present in the appearance and shape channels. A novel respons...
computer science
39,426
Nested Invariance Pooling and RBM Hashing for Image Instance Retrieval
cs.CV
The goal of this work is the computation of very compact binary hashes for image instance retrieval. Our approach has two novel contributions. The first one is Nested Invariance Pooling (NIP), a method inspired from i-theory, a mathematical theory for computing group invariant transformations with feed-forward neural n...
computer science
39,427
Fourier ptychographic reconstruction using Poisson maximum likelihood and truncated Wirtinger gradient
cs.CV
Fourier ptychographic microscopy (FPM) is a novel computational coherent imaging technique for high space-bandwidth product imaging. Mathematically, Fourier ptychographic (FP) reconstruction can be implemented as a phase retrieval optimization process, in which we only obtain low resolution intensity images correspondi...
computer science
39,428
2D Discrete Fourier Transform with Simultaneous Edge Artifact Removal for Real-Time Applications
cs.CV
Two-Dimensional (2D) Discrete Fourier Transform (DFT) is a basic and computationally intensive algorithm, with a vast variety of applications. 2D images are, in general, non-periodic, but are assumed to be periodic while calculating their DFTs. This leads to cross-shaped artifacts in the frequency domain due to spectra...
computer science
39,429
Image Labeling by Assignment
cs.CV
We introduce a novel geometric approach to the image labeling problem. Abstracting from specific labeling applications, a general objective function is defined on a manifold of stochastic matrices, whose elements assign prior data that are given in any metric space, to observed image measurements. The corresponding Rie...
computer science
39,430
Persistent Homology of Attractors For Action Recognition
cs.CG
In this paper, we propose a novel framework for dynamical analysis of human actions from 3D motion capture data using topological data analysis. We model human actions using the topological features of the attractor of the dynamical system. We reconstruct the phase-space of time series corresponding to actions using ti...
computer science
39,431
Variable-Length Hashing
cs.CV
Hashing has emerged as a popular technique for large-scale similarity search. Most learning-based hashing methods generate compact yet correlated hash codes. However, this redundancy is storage-inefficient. Hence we propose a lossless variable-length hashing (VLH) method that is both storage- and search-efficient. Stor...
computer science
39,432
Unsupervised Cross-Media Hashing with Structure Preservation
cs.CV
Recent years have seen the exponential growth of heterogeneous multimedia data. The need for effective and accurate data retrieval from heterogeneous data sources has attracted much research interest in cross-media retrieval. Here, given a query of any media type, cross-media retrieval seeks to find relevant results of...
computer science
39,433
Approximated Robust Principal Component Analysis for Improved General Scene Background Subtraction
cs.CV
The research reported in this paper addresses the fundamental task of separation of locally moving or deforming image areas from a static or globally moving background. It builds on the latest developments in the field of robust principal component analysis, specifically, the recently reported practical solutions for t...
computer science
39,434
A Survey of Stealth Malware: Attacks, Mitigation Measures, and Steps Toward Autonomous Open World Solutions
cs.CR
As our professional, social, and financial existences become increasingly digitized and as our government, healthcare, and military infrastructures rely more on computer technologies, they present larger and more lucrative targets for malware. Stealth malware in particular poses an increased threat because it is specif...
computer science
39,435
Joint System and Algorithm Design for Computationally Efficient Fan Beam Coded Aperture X-ray Coherent Scatter Imaging
cs.CV
In x-ray coherent scatter tomography, tomographic measurements of the forward scatter distribution are used to infer scatter densities within a volume. A radiopaque 2D pattern placed between the object and the detector array enables the disambiguation between different scatter events. The use of a fan beam source illum...
computer science
39,436
Active Detection and Localization of Textureless Objects in Cluttered Environments
cs.CV
This paper introduces an active object detection and localization framework that combines a robust untextured object detection and 3D pose estimation algorithm with a novel next-best-view selection strategy. We address the detection and localization problems by proposing an edge-based registration algorithm that refine...
computer science
39,437
On distances, paths and connections for hyperspectral image segmentation
cs.CV
The present paper introduces the $\eta$ and {\eta} connections in order to add regional information on $\lambda$-flat zones, which only take into account a local information. A top-down approach is considered. First $\lambda$-flat zones are built in a way leading to a sub-segmentation. Then a finer segmentation is obta...
computer science
39,438
SMASH: Physics-guided Reconstruction of Collisions from Videos
cs.GR
Collision sequences are commonly used in games and entertainment to add drama and excitement. Authoring even two body collisions in the real world can be difficult, as one has to get timing and the object trajectories to be correctly synchronized. After tedious trial-and-error iterations, when objects can actually be m...
computer science
39,439
Binary Quadratic Programing for Online Tracking of Hundreds of People in Extremely Crowded Scenes
cs.CV
Multi-object tracking has been studied for decades. However, when it comes to tracking pedestrians in extremely crowded scenes, we are limited to only few works. This is an important problem which gives rise to several challenges. Pre-trained object detectors fail to localize targets in crowded sequences. This conseque...
computer science
39,440
Möbius Invariants of Shapes and Images
cs.CV
Identifying when different images are of the same object despite changes caused by imaging technologies, or processes such as growth, has many applications in fields such as computer vision and biological image analysis. One approach to this problem is to identify the group of possible transformations of the object and...
computer science
39,441
Large Scale Deep Convolutional Neural Network Features Search with Lucene
cs.CV
In this work, we propose an approach to index Deep Convolutional Neural Network Features to support efficient content-based retrieval on large image databases. To this aim, we have converted the these features into a textual form, to index them into an inverted index by means of Lucene. In this way, we were able to set...
computer science
39,442
Audio-Visual Speaker Diarization Based on Spatiotemporal Bayesian Fusion
cs.CV
Speaker diarization consists of assigning speech signals to people engaged in a dialogue. An audio-visual spatiotemporal diarization model is proposed. The model is well suited for challenging scenarios that consist of several participants engaged in multi-party interaction while they move around and turn their heads t...
computer science
39,443
MARLow: A Joint Multiplanar Autoregressive and Low-Rank Approach for Image Completion
cs.CV
In this paper, we propose a novel multiplanar autoregressive (AR) model to exploit the correlation in cross-dimensional planes of a similar patch group collected in an image, which has long been neglected by previous AR models. On that basis, we then present a joint multiplanar AR and low-rank based approach (MARLow) f...
computer science
39,444
A metric on the space of finite sets of trajectories for evaluation of multi-target tracking algorithms
cs.CV
In this paper, we propose a metric on the space of finite sets of trajectories for assessing multi-target tracking algorithms in a mathematically sound way. The metric can be used, e.g., to compare estimates from algorithms with the ground truth. It includes intuitive costs associated to localization, missed and false ...
computer science
39,445
UAV-based Autonomous Image Acquisition with Multi-View Stereo Quality Assurance by Confidence Prediction
cs.CV
In this paper we present an autonomous system for acquiring close-range high-resolution images that maximize the quality of a later-on 3D reconstruction with respect to coverage, ground resolution and 3D uncertainty. In contrast to previous work, our system uses the already acquired images to predict the confidence in ...
computer science
39,446
Shaping the Future through Innovations: From Medical Imaging to Precision Medicine
cs.CV
Medical images constitute a source of information essential for disease diagnosis, treatment and follow-up. In addition, due to its patient-specific nature, imaging information represents a critical component required for advancing precision medicine into clinical practice. This manuscript describes recently developed ...
computer science
39,447
Deformably Registering and Annotating Whole CLARITY Brains to an Atlas via Masked LDDMM
cs.CV
The CLARITY method renders brains optically transparent to enable high-resolution imaging in the structurally intact brain. Anatomically annotating CLARITY brains is necessary for discovering which regions contain signals of interest. Manually annotating whole-brain, terabyte CLARITY images is difficult, time-consuming...
computer science
39,448
When Do Luxury Cars Hit the Road? Findings by A Big Data Approach
cs.CY
In this paper, we focus on studying the appearing time of different kinds of cars on the road. This information will enable us to infer the life style of the car owners. The results can further be used to guide marketing towards car owners. Conventionally, this kind of study is carried out by sending out questionnaires...
computer science
39,449
Efficiently Creating 3D Training Data for Fine Hand Pose Estimation
cs.CV
While many recent hand pose estimation methods critically rely on a training set of labelled frames, the creation of such a dataset is a challenging task that has been overlooked so far. As a result, existing datasets are limited to a few sequences and individuals, with limited accuracy, and this prevents these methods...
computer science
39,450
Real-time 3D Tracking of Articulated Tools for Robotic Surgery
cs.CV
In robotic surgery, tool tracking is important for providing safe tool-tissue interaction and facilitating surgical skills assessment. Despite recent advances in tool tracking, existing approaches are faced with major difficulties in real-time tracking of articulated tools. Most algorithms are tailored for offline proc...
computer science
39,451
Robust and Efficient Relative Pose with a Multi-camera System for Autonomous Vehicle in Highly Dynamic Environments
cs.RO
This paper studies the relative pose problem for autonomous vehicle driving in highly dynamic and possibly cluttered environments. This is a challenging scenario due to the existence of multiple, large, and independently moving objects in the environment, which often leads to excessive portion of outliers and results i...
computer science
39,452
Real-time Robust Manhattan Frame Estimation: Global Optimality and Applications
cs.CV
Most man-made environments, such as urban and indoor scenes, consist of a set of parallel and orthogonal planar structures. These structures are approximated by Manhattan world assumption and be referred to Manhattan Frame (MF). Given a set of inputs such as surface normals or vanishing points, we pose an MF estimation...
computer science
39,453
Fast Graph-Based Object Segmentation for RGB-D Images
cs.CV
Object segmentation is an important capability for robotic systems, in particular for grasping. We present a graph- based approach for the segmentation of simple objects from RGB-D images. We are interested in segmenting objects with large variety in appearance, from lack of texture to strong textures, for the task of ...
computer science
39,454
Video2GIF: Automatic Generation of Animated GIFs from Video
cs.CV
We introduce the novel problem of automatically generating animated GIFs from video. GIFs are short looping video with no sound, and a perfect combination between image and video that really capture our attention. GIFs tell a story, express emotion, turn events into humorous moments, and are the new wave of photojourna...
computer science
39,455
Monocular Urban Localization using Street View
cs.RO
This paper presents a metric global localization in the urban environment only with a monocular camera and the Google Street View database. We fully leverage the abundant sources from the Street View and benefits from its topo-metric structure to build a coarse-to-fine positioning, namely a topological place recognitio...
computer science
39,456
A deep convolutional neural network approach to single-particle recognition in cryo-electron microscopy
cs.CV
Background: Single-particle cryo-electron microscopy (cryo-EM) has become a popular tool for structural determination of biological macromolecular complexes. High-resolution cryo-EM reconstruction often requires hundreds of thousands of single-particle images. Particle extraction from experimental micrographs thus can ...
computer science
39,457
WAHRSIS: A Low-cost, High-resolution Whole Sky Imager With Near-Infrared Capabilities
cs.CV
Cloud imaging using ground-based whole sky imagers is essential for a fine-grained understanding of the effects of cloud formations, which can be useful in many applications. Some such imagers are available commercially, but their cost is relatively high, and their flexibility is limited. Therefore, we built a new dayt...
computer science
39,458
Automatic Detection of Epileptiform Discharges in the EEG
cs.CV
The diagnosis of epilepsy generally includes a visual inspection of EEG recorded data by the Neurologist, with the purpose of checking the occurrence of transient waveforms called interictal epileptiform discharges. These waveforms have short duration (less than 100 ms), so the inspection process is usually time-consum...
computer science
39,459
Sparse Signal Reconstruction with Multiple Side Information using Adaptive Weights for Multiview Sources
cs.CV
This work considers reconstructing a target signal in a context of distributed sparse sources. We propose an efficient reconstruction algorithm with the aid of other given sources as multiple side information (SI). The proposed algorithm takes advantage of compressive sensing (CS) with SI and adaptive weights by solvin...
computer science
39,460
Trajectory probability hypothesis density filter
stat.AP
This paper presents the probability hypothesis density (PHD) filter for sets of trajectories. The resulting filter, which is referred to as trajectory probability density filter (TPHD), is capable of estimating trajectories in a principled way without requiring to evaluate all measurement-to-target association hypothes...
computer science
39,461
Blind Analysis of CT Image Noise Using Residual Denoised Images
cs.CV
CT protocol design and quality control would benefit from automated tools to estimate the quality of generated CT images. These tools could be used to identify erroneous CT acquisitions or refine protocols to achieve certain signal to noise characteristics. This paper investigates blind estimation methods to determine ...
computer science
39,462
2D Visual Place Recognition for Domestic Service Robots at Night
cs.RO
Domestic service robots such as lawn mowing and vacuum cleaning robots are the most numerous consumer robots in existence today. While early versions employed random exploration, recent systems fielded by most of the major manufacturers have utilized range-based and visual sensors and user-placed beacons to enable robo...
computer science
39,463
Multi-Object Tracking and Identification over Sets
cs.CV
The ability for an autonomous agent or robot to track and identify potentially multiple objects in a dynamic environment is essential for many applications, such as automated surveillance, traffic monitoring, human-robot interaction, etc. The main challenge is due to the noisy and incomplete perception including inevit...
computer science
39,464
Multiple target tracking based on sets of trajectories
cs.CV
This paper proposes the set of target trajectories as the state variable for multiple target tracking. The main objective of multiple target tracking is to estimate an unknown number of target trajectories given a sequence of measurements. This quantity of interest is perfectly represented as a set of trajectories with...
computer science
39,465
A Light-powered, Always-On, Smart Camera with Compressed Domain Gesture Detection
cs.CV
In this paper we propose an energy-efficient camera-based gesture recognition system powered by light energy for "always on" applications. Low energy consumption is achieved by directly extracting gesture features from the compressed measurements, which are the block averages and the linear combinations of the image se...
computer science
39,466
Pairwise Decomposition of Image Sequences for Active Multi-View Recognition
cs.CV
A multi-view image sequence provides a much richer capacity for object recognition than from a single image. However, most existing solutions to multi-view recognition typically adopt hand-crafted, model-based geometric methods, which do not readily embrace recent trends in deep learning. We propose to bring Convolutio...
computer science
39,467
A Feature based Approach for Video Compression
cs.CV
It is a high cost problem for panoramic image stitching via image matching algorithm and not practical for real-time performance. In this paper, we take full advantage ofHarris corner invariant characterization method light intensity parallel meaning, translation and rotation, and made a realtime panoramic image stitch...
computer science
39,468
Image segmentation based on the hybrid total variation model and the K-means clustering strategy
math.OC
The performance of image segmentation highly relies on the original inputting image. When the image is contaminated by some noises or blurs, we can not obtain the efficient segmentation result by using direct segmentation methods. In order to efficiently segment the contaminated image, this paper proposes a two step me...
computer science
39,469
Quantitative Analysis of Saliency Models
cs.GR
Previous saliency detection research required the reader to evaluate performance qualitatively, based on renderings of saliency maps on a few shapes. This qualitative approach meant it was unclear which saliency models were better, or how well they compared to human perception. This paper provides a quantitative evalua...
computer science
39,470
Dictionary Learning for Robotic Grasp Recognition and Detection
cs.RO
The ability to grasp ordinary and potentially never-seen objects is an important feature in both domestic and industrial robotics. For a system to accomplish this, it must autonomously identify grasping locations by using information from various sensors, such as Microsoft Kinect 3D camera. Despite numerous progress, s...
computer science
39,471
Unifying Geometric Features and Facial Action Units for Improved Performance of Facial Expression Analysis
cs.CV
Previous approaches to model and analyze facial expression analysis use three different techniques: facial action units, geometric features and graph based modelling. However, previous approaches have treated these technique separately. There is an interrelationship between these techniques. The facial expression analy...
computer science
39,472
Automatic Separation of Compound Figures in Scientific Articles
cs.CV
Content-based analysis and retrieval of digital images found in scientific articles is often hindered by images consisting of multiple subfigures (compound figures). We address this problem by proposing a method to automatically classify and separate compound figures, which consists of two main steps: (i) a supervised ...
computer science
39,473
Reinforcement Learning for Semantic Segmentation in Indoor Scenes
cs.CV
Future advancements in robot autonomy and sophistication of robotics tasks rest on robust, efficient, and task-dependent semantic understanding of the environment. Semantic segmentation is the problem of simultaneous segmentation and categorization of a partition of sensory data. The majority of current approaches tack...
computer science
39,474
An Interactive Medical Image Segmentation Framework Using Iterative Refinement
cs.CV
Image segmentation is often performed on medical images for identifying diseases in clinical evaluation. Hence it has become one of the major research areas. Conventional image segmentation techniques are unable to provide satisfactory segmentation results for medical images as they contain irregularities. They need to...
computer science
39,475
Pairwise Quantization
cs.CV
We consider the task of lossy compression of high-dimensional vectors through quantization. We propose the approach that learns quantization parameters by minimizing the distortion of scalar products and squared distances between pairs of points. This is in contrast to previous works that obtain these parameters throug...
computer science
39,476
Joint Recursive Monocular Filtering of Camera Motion and Disparity Map
cs.CV
Monocular scene reconstruction is essential for modern applications such as robotics or autonomous driving. Although stereo methods usually result in better accuracy than monocular methods, they are more expensive and more difficult to calibrate. In this work, we present a novel second order optimal minimum energy filt...
computer science
39,477
Enhanced high dynamic range 3D shape measurement based on generalized phase-shifting algorithm
cs.CV
It is a challenge for Phase Measurement Profilometry (PMP) to measure objects with a large range of reflectivity variation across the surface. Saturated or dark pixels in the deformed fringe patterns captured by the camera will lead to phase fluctuations and errors. Jiang et al. proposed a high dynamic range real-time ...
computer science
39,478
Free Form based active contours for image segmentation and free space perception
cs.RO
In this paper we present a novel approach for representing and evolving deformable active contours. The method combines piecewise regular B{\'e}zier models and curve evolution defined by local Free Form Deformation. The contour deformation is locally constrained which allows contour convergence with almost linear compl...
computer science
39,479
A practical local tomography reconstruction algorithm based on known subregion
cs.CV
We propose a new method to reconstruct data acquired in a local tomography setup. This method uses an initial reconstruction and refines it by correcting the low frequency artifacts known as the cupping effect. A basis of Gaussian functions is used to correct the initial reconstruction. The coefficients of this basis a...
computer science
39,480
High-speed real-time single-pixel microscopy based on Fourier sampling
cs.CV
Single-pixel cameras based on the concepts of compressed sensing (CS) leverage the inherent structure of images to retrieve them with far fewer measurements and operate efficiently over a significantly broader spectral range than conventional silicon-based cameras. Recently, photonic time-stretch (PTS) technique facili...
computer science
39,481
A Survey of Pansharpening Methods with A New Band-Decoupled Variational Model
cs.CV
Most satellites decouple the acquisition of a panchromatic image at high spatial resolution from the acquisition of a multispectral image at lower spatial resolution. Pansharpening is a fusion technique used to increase the spatial resolution of the multispectral data while simultaneously preserving its spectral inform...
computer science
39,482
Deep Learning for Identifying Metastatic Breast Cancer
cs.CV
The International Symposium on Biomedical Imaging (ISBI) held a grand challenge to evaluate computational systems for the automated detection of metastatic breast cancer in whole slide images of sentinel lymph node biopsies. Our team won both competitions in the grand challenge, obtaining an area under the receiver ope...
computer science
39,483
RRV: A Spatiotemporal Descriptor for Rigid Body Motion Recognition
cs.RO
Motion behaviors of a rigid body can be characterized by a 6-dimensional motion trajectory, which contains position vectors of a reference point on the rigid body and rotations of this rigid body over time. This paper devises a Rotation and Relative Velocity (RRV) descriptor by exploring the local translational and rot...
computer science
39,484
Automatic 3D Reconstruction for Symmetric Shapes
cs.CV
Generic 3D reconstruction from a single image is a difficult problem. A lot of data loss occurs in the projection. A domain based approach to reconstruction where we solve a smaller set of problems for a particular use case lead to greater returns. The project provides a way to automatically generate full 3-D rendition...
computer science
39,485
Detection and Tracking of Liquids with Fully Convolutional Networks
cs.CV
Recent advances in AI and robotics have claimed many incredible results with deep learning, yet no work to date has applied deep learning to the problem of liquid perception and reasoning. In this paper, we apply fully-convolutional deep neural networks to the tasks of detecting and tracking liquids. We evaluate three ...
computer science
39,486
Human Computer Interaction Using Marker Based Hand Gesture Recognition
cs.HC
Human Computer Interaction (HCI) has been redefined in this era. People want to interact with their devices in such a way that has physical significance in the real world, in other words, they want ergonomic input devices. In this paper, we propose a new method of interaction with computing devices having a consumer gr...
computer science
39,487
Automatic Neuron Detection in Calcium Imaging Data Using Convolutional Networks
cs.CV
Calcium imaging is an important technique for monitoring the activity of thousands of neurons simultaneously. As calcium imaging datasets grow in size, automated detection of individual neurons is becoming important. Here we apply a supervised learning approach to this problem and show that convolutional networks can a...
computer science
39,488
Finding the Topic of a Set of Images
cs.CV
In this paper we introduce the problem of determining the topic that a set of images is describing, where every topic is represented as a set of words. Different from other problems like tag assignment or similar, a) we assume multiple images are used as input instead of single image, b) Input images are typically not ...
computer science
39,489
De-Hashing: Server-Side Context-Aware Feature Reconstruction for Mobile Visual Search
cs.MM
Due to the prevalence of mobile devices, mobile search becomes a more convenient way than desktop search. Different from the traditional desktop search, mobile visual search needs more consideration for the limited resources on mobile devices (e.g., bandwidth, computing power, and memory consumption). The state-of-the-...
computer science
39,490
Resolution- and throughput-enhanced spectroscopy using high-throughput computational slit
cs.CV
There exists a fundamental tradeoff between spectral resolution and the efficiency or throughput for all optical spectrometers. The primary factors affecting the spectral resolution and throughput of an optical spectrometer are the size of the entrance aperture and the optical power of the focusing element. Thus far co...
computer science
39,491
A spectral-spatial fusion model for robust blood pulse waveform extraction in photoplethysmographic imaging
cs.CV
Photoplethysmographic imaging is a camera-based solution for non-contact cardiovascular monitoring from a distance. This technology enables monitoring in situations where contact-based devices may be problematic or infeasible, such as ambulatory, sleep, and multi-individual monitoring. However, extracting the blood pul...
computer science
39,492
Steering a Predator Robot using a Mixed Frame/Event-Driven Convolutional Neural Network
cs.RO
This paper describes the application of a Convolutional Neural Network (CNN) in the context of a predator/prey scenario. The CNN is trained and run on data from a Dynamic and Active Pixel Sensor (DAVIS) mounted on a Summit XL robot (the predator), which follows another one (the prey). The CNN is driven by both conventi...
computer science
39,493
Noise Models in Feature-based Stereo Visual Odometry
cs.RO
Feature-based visual structure and motion reconstruction pipelines, common in visual odometry and large-scale reconstruction from photos, use the location of corresponding features in different images to determine the 3D structure of the scene, as well as the camera parameters associated with each image. The noise mode...
computer science
39,494
Keyframe-based monocular SLAM: design, survey, and future directions
cs.CV
Extensive research in the field of monocular SLAM for the past fifteen years has yielded workable systems that found their way into various applications in robotics and augmented reality. Although filter-based monocular SLAM systems were common at some time, the more efficient keyframe-based solutions are becoming the ...
computer science
39,495
Cell assemblies at multiple time scales with arbitrary lag constellations
cs.CV
Hebb's idea of a cell assembly as the fundamental unit of neural information processing has dominated neuroscience like no other theoretical concept within the past 60 years. A range of different physiological phenomena, from precisely synchronized spiking to broadly simultaneous rate increases, has been subsumed under...
computer science
39,496
Aggressive actions and anger detection from multiple modalities using Kinect
cs.HC
Prison facilities, mental correctional institutions, sports bars and places of public protest are prone to sudden violence and conflicts. Surveillance systems play an important role in mitigation of hostile behavior and improvement of security by detecting such provocative and aggressive activities. This research propo...
computer science
39,497
EmoFit: Affect Monitoring System for Sedentary Jobs
cs.HC
Emotional and physical well-being at workplace is important for a positive work environment and higher productivity. Jobs such as software programming lead to a sedentary lifestyle and require high interaction with computers. Working at the same job for years can cause a feeling of intellectual stagnation and lack of d...
computer science
39,498
Object Recognition and Identification Using ESM Data
stat.AP
Recognition and identification of unknown targets is a crucial task in surveillance and security systems. Electronic Support Measures (ESM) are one of the most effective sensors for identification, especially for maritime and air--to--ground applications. In typical surveillance systems multiple ESM sensors are usually...
computer science
39,499
From Collective Adaptive Systems to Human Centric Computation and Back: Spatial Model Checking for Medical Imaging
cs.LO
Recent research on formal verification for Collective Adaptive Systems (CAS) pushed advancements in spatial and spatio-temporal model checking, and as a side result provided novel image analysis methodologies, rooted in logical methods for topological spaces. Medical Imaging (MI) is a field where such technologies show...
computer science
39,500
Non-Central Catadioptric Cameras Pose Estimation using 3D Lines
cs.RO
In this article we purpose a novel method for planar pose estimation of mobile robots. This method is based on an analytic solution (which we derived) for the projection of 3D straight lines, onto the mirror of Non-Central Catadioptric Cameras (NCCS). The resulting solution is rewritten as a function of the rotation an...
computer science
39,501
Multimodal Affect Recognition using Kinect
cs.HC
Affect (emotion) recognition has gained significant attention from researchers in the past decade. Emotion-aware computer systems and devices have many applications ranging from interactive robots, intelligent online tutor to emotion based navigation assistant. In this research data from multiple modalities such as fac...
computer science
39,502
DNA Image Pro -- A Tool for Generating Pixel Patterns using DNA Tile Assembly
cs.ET
Self-assembly is a process found everywhere in the Nature. In particular, it is known that DNA self-assembly is Turing universal. Thus one can do arbitrary computations or build nano-structures using DNA self-assembly. In order to understand the DNA self-assembly process, many mathematical models have been proposed in ...
computer science
39,503
A Representation Theory Perspective on Simultaneous Alignment and Classification
cs.CV
One of the difficulties in 3D reconstruction of molecules from images in single particle Cryo-Electron Microscopy (Cryo-EM), in addition to high levels of noise and unknown image orientations, is heterogeneity in samples: in many cases, the samples contain a mixture of molecules, or multiple conformations of one molecu...
computer science
39,504
Event-based, 6-DOF Camera Tracking from Photometric Depth Maps
cs.CV
Event cameras are bio-inspired vision sensors that output pixel-level brightness changes instead of standard intensity frames. These cameras do not suffer from motion blur and have a very high dynamic range, which enables them to provide reliable visual information during high-speed motions or in scenes characterized b...
computer science
39,505
Deleting and Testing Forbidden Patterns in Multi-Dimensional Arrays
cs.DS
Understanding the local behaviour of structured multi-dimensional data is a fundamental problem in various areas of computer science. As the amount of data is often huge, it is desirable to obtain sublinear time algorithms, and specifically property testers, to understand local properties of the data. We focus on the...
computer science
39,506
A real-time analysis of rock fragmentation using UAV technology
cs.RO
Accurate measurement of blast-induced rock fragmentation is of great importance for many mining operations. The post-blast rock size distribution can significantly influence the efficiency of all the downstream mining and comminution processes. Image analysis methods are one of the most common methods used to measure r...
computer science
39,507
Defensive Distillation is Not Robust to Adversarial Examples
cs.CR
We show that defensive distillation is not secure: it is no more resistant to targeted misclassification attacks than unprotected neural networks.
computer science
39,508
A Real-Time Deep Learning Pedestrian Detector for Robot Navigation
cs.RO
A real-time Deep Learning based method for Pedestrian Detection (PD) is applied to the Human-Aware robot navigation problem. The pedestrian detector combines the Aggregate Channel Features (ACF) detector with a deep Convolutional Neural Network (CNN) in order to obtain fast and accurate performance. Our solution is fir...
computer science
39,509
Efficient and Robust Pedestrian Detection using Deep Learning for Human-Aware Navigation
cs.RO
This paper addresses the problem of Human-Aware Navigation (HAN), using multi camera sensors to implement a vision-based person tracking system. The main contributions of this paper are as follows: a novel and efficient Deep Learning person detection and a standardization of human-aware constraints. In the first stage ...
computer science