Bharadhwaj, H.[Homanga]
* 2020: Diva: Diverse Visual Feature Aggregation for Deep Metric Learning
* 2020: Generative Framework for Zero-Shot Learning with Adversarial Domain Adaptation, A
Includes: Bharadhwaj, H.[Homanga] Bharadhwaj, H.
Bharadhwaj, M.[Manoj]
* 2022: Detecting Vehicles on the Edge: Knowledge Distillation to Improve Performance in Heterogeneous Road Traffic
Bharadia, D.[Dinesh]
* 2019: SIGNet: Semantic Instance Aided Unsupervised 3D Geometry Perception
* 2020: S3 Net: Semantic-Aware Self-supervised Depth Estimation with Monocular Videos and Synthetic Data
Bharadwaj, A.[Ananth]
* 2023: Switched Modular Multi-Coil Array Transmitter Pad With Coil Rectenna Sensors to Improve Lateral Misalignment Tolerance in Wireless Power Charging of Drone Systems, A
Bharadwaj, A.R.[Abhiram Ravi]
* 2021: Interpretable Emotion Classification Using Temporal Convolutional Models
Bharadwaj, H.M.[Hari M.]
* 2021: Object classification from randomized EEG trials
* 2021: Perils and Pitfalls of Block Design for EEG Classification Experiments, The
* 2022: Confounds in the Data: Comments on Decoding Brain Representations by Multimodal Learning of Neural Activity and Visual Features
* 2023: Still an Ineffective Method With Supertrials/ERPs: Comments on Decoding Brain Representations by Multimodal Learning of Neural Activity and Visual Features
Bharadwaj, H.S.[Harish S.]
* 2015: Hierarchical approach to fingerprint of places based real-time topological mapping for autonomous rovers
Bharadwaj, P.[Priya]
* 2002: Infrared-Image Classification Using Hidden Markov Trees
Bharadwaj, R.[Rohit]
* 2022: Mobile based Human Identification using Forehead Creases: Application and Assessment under COVID-19 Masked Face Scenarios
Bharadwaj, S.[Samarth]
* 2011: Evolutionary granular approach for recognizing faces altered due to plastic surgery
* 2011: Quality assessment based denoising to improve face recognition performance
* 2013: Can holistic representations be used for face biometric quality assessment?
* 2013: Computationally Efficient Face Spoofing Detection with Motion Magnification
* 2014: Biometric quality: a review of fingerprint, iris, and face
* 2015: QFuse: Online learning framework for adaptive biometric system
* 2016: Face anti-spoofing with multifeature videolet aggregation
* 2019: Deep Learning Approach to Solar-Irradiance Forecasting in Sky-Videos, A
* 2020: Collaborative Noise Mapping Using Smartphone
* 2020: Determination of Optimal Location for Setting Up Cell Phone Tower In City Environment Using Lidar Data
* 2020: Different Scales of Urban Traffic Noise Prediction
* 2020: Novel Self-Supervised Re-labeling Approach for Training with Noisy Labels, A
* 2021: Addressing Target Shift in Zero-shot Learning using Grouped Adversarial Learning
* 2021: Collaborative Air Quality Mapping of Different Metropolitan Cities Of India
* 2021: Raster Data Based Automated Noise Data Integration for Noise Mapping Limiting Data Dependency
* 2022: GIS Mapping of Short-Term Noisy Event of Diwali Night in Lucknow City
Includes: Bharadwaj, S.[Samarth] Bharadwaj, S. Bharadwaj, S.[Shrisha] Bharadwaj, S.[Shruti]
16 for Bharadwaj, S.
Bharadwaj, V.
* 2000: Efficient partitioning and scheduling of computer vision and image processing data on bus networks using divisible load analysis
Bharaj, G.[Gaurav]
* 2011: data-driven approach for real-time full body pose reconstruction from a depth camera, A
* 2013: Personalization and Evaluation of a Real-Time Depth-Based Full Body Tracker
* 2019: FML: Face Model Learning From Videos
* 2020: StyleRig: Rigging StyleGAN for 3D Control Over Portrait Images
* 2022: Multi-domain Multi-definition Landmark Localization for Small Datasets
* 2023: Few-Shot Geometry-Aware Keypoint Localization
* 2023: Implicit Neural Head Synthesis via Controllable Local Deformation Fields
* 2023: Unsupervised Facial Performance Editing via Vector-Quantized StyleGAN Representations
Includes: Bharaj, G.[Gaurav] Bharaj, G.
8 for Bharaj, G.
Bharali, A.
* 2016: Operational Remote Sensing Services In North Eastern Region Of India For Natural Resources Management, Early Warning For Disaster Risk Reduction And Dissemination Of Information And Services
Bharali, U.
* 2006: Cardiac Motion Estimation from Echocardiographic Image Sequence using Unsupervised Active Contour Tracker
Bharambe, A.[Ashwin]
* 2018: Exploring the Limits of Weakly Supervised Pretraining
Bharambe, P.[Piyush]
* 2022: Open-Set Domain Adaptation Under Few Source-Domain Labeled Samples
Bharanidharan, N.
* 2020: Improved chicken swarm optimization to classify dementia MRI images using a novel controlled randomness optimization algorithm
* 2020: Performance enhancement of swarm intelligence techniques in dementia classification using dragonfly-based hybrid algorithms
* 2021: Dementia MRI image classification using transformation technique based on elephant herding optimization with Randomized Adam method for updating the hyper-parameters
Bharanitharan, K.
* 2008: Low Complexity Detection of Discrete Cross Differences for Fast H.264/AVC Intra Prediction, A
* 2010: Classified Multifilter Up-Sampling Algorithm in Spatial Scalability for H.264/SVC Encoder
* 2012: Effective Search Point Reduction Algorithm and its VLSI Design for HDTV H.264/AVC Variable Block Size Motion Estimation
* 2012: Selective Intra Block Size Decision and Fast Intra Mode Decision Algorithms for H.264/AVC Encoder
* 2015: Multi-round dynamic swap optimisation for table-based steganography
* 2015: Quadri-directional searching algorithm for secret image sharing using meaningful shadows
Includes: Bharanitharan, K. Bharanitharan, K.[Karunanithi]
Bharat, S.
* 2009: Young's Modulus Reconstruction for Radio-Frequency Ablation Electrode-Induced Displacement Fields: A Feasibility Study
Bharath, A.
* 2005: approach to identify unique styles in online handwriting recognition, An
* 2007: Hidden Markov Models for Online Handwritten Tamil Word Recognition
* 2007: HMM-Based Online Handwriting Recognition System for Telugu Symbols
* 2009: Framework Based on Semi-Supervised Clustering for Discovering Unique Writing Styles, A
* 2010: On the Significance of Stroke Size and Position for Online Handwritten Devanagari Word Recognition: An Empirical Study
* 2012: HMM-Based Lexicon-Driven and Lexicon-Free Word Recognition for Online Handwritten Indic Scripts
* 2016: data augmentation methodology for training machine/deep learning gait recognition algorithms, A
Includes: Bharath, A. Bharath, A.[Anil]
7 for Bharath, A.
Bharath, A.A.
* 1998: Steerable Filters from Erlang Functions
* 1999: Obtaining medial responses from steerable filters
* 1999: Segmentation of Retinal Blood Vessels based on the Second Directional Derivative and Region Growing
* 2001: Method of Vessel Tracking for Vessel Diameter Measurement on Retinal Images, A
* 2004: Steering in Scale Space to Optimally Detect Image Structures
* 2005: Steerable Complex Wavelet Construction and Its Application to Image Denoising, A
* 2006: Tracking hand and finger movements for behaviour analysis
* 2007: Extrapolative Spatial Models for Detecting Perceptual Boundaries in Colour Images
* 2007: Gradient Field Correlation for Keypoint Correspondence
* 2010: Dense photometric stereo reconstruction on many core GPUs
* 2011: Joint spatio-temporal registration and microvasculature segmentation of retinal angiogram sequences
* 2012: Efficient Kernels Couple Visual Words Through Categorical Opponency
* 2012: Microvasculature Segmentation of Co-Registered Retinal Angiogram Sequences
* 2013: Mobile Visual Assistive Apps: Benchmarks of Vision Algorithm Performance
* 2014: Associating Locations Between Indoor Journeys from Wearable Cameras
* 2014: Associating locations from wearable cameras
* 2014: dataset for Hand-Held Object Recognition, A
* 2014: Small Hand-Held Object Recognition Test (SHORT)
* 2014: Spatio-chromatic Opponent Features
* 2015: Appearance-based indoor localization: A comparison of patch descriptor performance
* 2015: Indoor Localisation with Regression Networks and Place Cell Models
* 2016: Adversarial Training for Sketch Retrieval
* 2016: assistive haptic interface for appearance-based indoor navigation, An
* 2017: Deep Reinforcement Learning: A Brief Survey
* 2018: Denoising adversarial autoencoders: classifying skin lesions using limited labelled training data
* 2018: Generative Adversarial Networks: An Overview
* 2019: recursive Bayesian approach to describe retinal vasculature geometry, A
Includes: Bharath, A.A. Bharath, A.A.[Anil A.] Bharath, A.A.[Anil Anthony]
27 for Bharath, A.A.
Bharath, K.[Karthik]
* 2021: Geometric empirical Bayesian model for classification of functional data under diverse sampling regimes
Bharathi, D.
* 2020: Bus Arrival Time Prediction: A Spatial Kalman Filter Approach
Bharathi, P.T.
* 2013: Texture based color segmentation for infrared river ice images using K-means clustering
Bharathi, S.A.[S. Arun]
* 2011: efficient and robust face detection method using neuro-fuzzy approach, An
Bharathi, S.H.
* 2021: Effective compressed sensing MRI reconstruction via hybrid GSGWO algorithm
Bharathi, V.S.[V. Subbiah]
* 2008: Orthogonal moments based texture analysis of CT liver images
Bharati, A.
* 2017: Provenance filtering for multimedia phylogeny
* 2017: Spotting the difference: Context retrieval and analysis for improved forgery detection and localization
* 2017: U-Phylogeny: Undirected provenance graph construction in the wild
* 2018: Image Provenance Analysis at Scale
* 2018: To Frontalize or Not to Frontalize: Do We Really Need Elaborate Pre-processing to Improve Face Recognition?
* 2019: Beyond Pixels: Image Provenance Analysis Leveraging Metadata
* 2021: Fast Local Spatial Verification for Feature-Agnostic Large-Scale Image Retrieval
* 2022: APE-V: Athlete Performance Evaluation using Video
Includes: Bharati, A. Bharati, A.[Aparna]
8 for Bharati, A.
Bharati, S.[Sushil]
* 2023: CAVLI - Using image associations to produce local concept-based explanations
Bharde, M.[Madhumita]
* 2020: Multi-criteria online frame-subset selection for autonomous vehicle videos
Bhardwaj, A.
* 2007: On the Use of Lexeme Features for Writer Verification
* 2009: Automatic recognition of handwritten medical forms for search engines
* 2009: probabilistic method for keyword retrieval in handwritten document images, A
* 2009: Stochastic Segment Modeling for Offline Handwriting Recognition
* 2009: Using topic models for OCR correction
* 2010: Retrieving Handwriting Styles: A Content Based Approach to Handwritten Document Retrieval
* 2010: Stochastic Segment Model Adaptation for Offline Handwriting Recognition
* 2011: Unconstrained handwritten document retrieval
* 2013: Style Finder: Fine-Grained Clothing Style Detection and Retrieval
* 2014: Cascaded sparse color-localized matching for logo retrieval
* 2014: Furniture-geek: Understanding fine-grained furniture attributes from freely associated text and tags
* 2014: Im2depth: Scalable exemplar based depth transfer
* 2014: Region-Based Discriminative Feature Pooling for Scene Text Recognition
* 2016: Robust PCA-based solution to image composition using augmented Lagrange multiplier (ALM)
* 2019: Distribution and Morphologies of Transverse Aeolian Ridges in ExoMars 2020 Rover Landing Site
* 2019: Monitoring the Indian Summer Monsoon Evolution at the Granularity of the Indian Meteorological Sub-divisions using Remotely Sensed Rainfall Products
* 2019: On the Minimum Perceptual Temporal Video Sampling Rate and Its Application to Adaptive Frame Skipping
* 2019: Quantifying the Congruence between Air and Land Surface Temperatures for Various Climatic and Elevation Zones of Western Himalaya
* 2019: Quantitative Analytical Framework for Photon Transfer Curve-Based Preflight Characterization of the Indian Remote Sensing Imaging Systems, A
* 2019: UAV Imaging of a Martian Brine Analogue Environment in a Fluvio-Aeolian Setting
* 2019: Urban Flood Detection with Sentinel-1 Multi-Temporal Synthetic Aperture Radar (SAR) Observations in a Bayesian Framework: A Case Study for Hurricane Matthew
* 2020: Applications of Unmanned Aerial Vehicles in Cryosphere: Latest Advances and Prospects
* 2020: Glacier Ice Thickness Estimation and Future Lake Formation in Swiss Southwestern Alps: The Upper Rhône Catchment: A VOLTA Application
* 2020: Glacier Ice Thickness Estimation and Future Lake Formation in Swiss Southwestern Alps: The Upper Rhône Catchment: A VOLTA Application
* 2020: novel fitness function in genetic programming to handle unbalanced emotion recognition data, A
* 2020: Small Lava Caves as Possible Exploratory Targets on Mars: Analogies Drawn from UAV Imaging of an Icelandic Lava Field
* 2021: Classifying Breast Density in Mammographic Images Using Wavelet-Based and Fine-Tuned Sensory Neural Networks
* 2021: Empowering Knowledge Distillation via Open Set Recognition for Robust 3D Point Cloud Classification
* 2021: Local- and Regional-Scale Forcing of Glacier Mass Balance Changes in the Swiss Alps
* 2021: Modelling Permafrost Distribution in Western Himalaya Using Remote Sensing and Field Observations
* 2022: Automated Delineation of Supraglacial Debris Cover Using Deep Learning and Multisource Remote Sensing Data
* 2022: Editorial: Applications of Remote Sensing in Glaciology
* 2022: Image Authentication Using Block Truncation Coding in Lifting Wavelet Domain
* 2022: Reconstruction and Characterisation of Past and the Most Recent Slope Failure Events at the 2021 Rock-Ice Avalanche Site in Chamoli, Indian Himalaya
* 2022: Remote Sensing Perspective on Mass Wasting in Contrasting Planetary Environments: Cases of the Moon and Ceres, A
* 2024: Evaluating the Efficacy of Segment Anything Model for Delineating Agriculture and Urban Green Spaces in Multiresolution Aerial and Spaceborne Remote Sensing Images
Includes: Bhardwaj, A. Bhardwaj, A.[Anurag] Bhardwaj, A.[Adit] Bhardwaj, A.[Anshuman] Bhardwaj, A.[Amit] Bhardwaj, A.[Alok] Bhardwaj, A.[Arpit] Bhardwaj, A.[Anuj] Bhardwaj, A.[Ayush]
36 for Bhardwaj, A.
Bhardwaj, C.[Charu]
* 2021: Diabetic retinopathy severity grading employing quadrant-based Inception-V3 convolution neural network architecture
Bhardwaj, D.
* 2016: Image Overlay Text Detection Based on JPEG Truncation Error Analysis
* 2018: JPEG blocking artifact detector for image forensics, A
Includes: Bhardwaj, D. Bhardwaj, D.[Dinesh]
Bhardwaj, I.[Ishan]
* 2017: spoof resistant multibiometric system based on the physiological and behavioral characteristics of fingerprint, A
Bhardwaj, J.[Jayati]
* 2021: ARP cache poisoning: detection, mitigation and prevention schemes
* 2021: Building Capacity for a User-Centred Integrated Early Warning System for Drought in Papua New Guinea
* 2022: Evaluating Satellite Soil Moisture Datasets for Drought Monitoring in Australia and the South-West Pacific
Includes: Bhardwaj, J.[Jayati] Bhardwaj, J.[Jessica]
Bhardwaj, K.
* 2011: Multi-Resolution Probabilistic Information Fusion for Camera-Based Document Image Matching
* 2013: Augmented paper system: A framework for User's Personalized Workspace
* 2015: Camera-based document image matching using multi-feature probabilistic information fusion
* 2018: unsupervised technique for optimal feature selection in attribute profiles for spectral-spatial classification of hyperspectral images, An
* 2019: Threshold-Free Attribute Profile for Classification of Hyperspectral Images
* 2020: Hardware Prototype Targeting Distributed Deep Learning for On-device Inference, A
* 2021: How does topology influence gradient propagation and model performance of deep networks with DenseNet-type skip connections?
* 2023: ZiCo-BC: A Bias Corrected Zero-Shot NAS for Vision Tasks
Includes: Bhardwaj, K. Bhardwaj, K.[Kavita] Bhardwaj, K.[Kaushal] Bhardwaj, K.[Kartikeya]
8 for Bhardwaj, K.
Bhardwaj, M.[Manju]
* 2016: Cost-effectiveness of classification ensembles
Bhardwaj, N.[Neelam]
* 2015: imaging approach for the automatic thresholding of photo defects, An
* 2023: Teardrops on My Face: Automatic Weeping Detection From Nonverbal Behavior
Includes: Bhardwaj, N.[Neelam] Bhardwaj, N.[Nikhil]
Bhardwaj, P.
* 2020: Building A Model for Reservoir Characterisation In GIS Using Machine Learning
* 2021: novel and efficient deep learning approach for COVID-19 detection using X-ray imaging modality, A
Includes: Bhardwaj, P. Bhardwaj, P.[Prashant]
Bhardwaj, R.[Rupali]
* 2020: improved block based joint reversible data hiding in encrypted images by symmetric cryptosystem, An
Bhardwaj, S.
* 2013: GFM-Based Methods for Speaker Identification
* 2018: Recovering from Random Pruning: On the Plasticity of Deep Convolutional Neural Networks
* 2019: Efficient Video Classification Using Fewer Frames
* 2019: Studying the plasticity in deep convolutional neural networks using random pruning
Includes: Bhardwaj, S. Bhardwaj, S.[Shweta]
Bhardwaj, V.[Vikash]
* 2015: imaging approach for the automatic thresholding of photo defects, An
Bhargav Spantzel, A.
* 2010: Multifactor Identity Verification Using Aggregated Proof of Knowledge
Includes: Bhargav Spantzel, A. Bhargav-Spantzel, A.
Bhargav, R.[Rohit]
* 2019: Locating multiple license plates using scale, rotation, and colour-independent clustering and filtering techniques
Bhargav, R.S.[Rongali Sai]
* 2023: Temporal DINO: A Self-supervised Video Strategy to Enhance Action Prediction
Bhargav, S.[Sai]
* 2023: Domain Adaptive Few-Shot Open-Set Learning
Bhargava, A.
* 2020: Autolabeling 3D Objects With Differentiable Rendering of SDF Shape Priors
* 2020: Real-Time Panoptic Segmentation From Dense Detections
* 2022: DUEL: Dempster Uncertainty-Based Enhanced- Trust Level Scheme for VANET
Includes: Bhargava, A. Bhargava, A.[Arpita]
Bhargava, B.
* 2007: On the Design of Perceptual MPEG-Video Encryption Algorithms
* 2021: Distributed Model-Free Ride-Sharing Approach for Joint Matching, Pricing, and Dispatching Using Deep Reinforcement Learning, A
* 2022: AdaPool: A Diurnal-Adaptive Fleet Management Framework Using Model-Free Deep Reinforcement Learning and Change Point Detection
* 2022: Applying Machine Learning and Data Fusion to the Missing Person Problem
* 2022: PassGoodPool: Joint Passengers and Goods Fleet Management With Reinforcement Learning Aided Pricing, Matching, and Route Planning
* 2024: EMERSK: Explainable Multimodal Emotion Recognition With Situational Knowledge
Includes: Bhargava, B. Bhargava, B.[Bharat]
Bhargava, K.[Kriti]
* 2015: Precision Farming: Sensor Analytics
* 2020: Novel mathematical model to determine geo-referenced locations for C-ITS communications to generate dynamic vehicular gaps
* 2023: Attentive Sensing for Long-Range Face Recognition
Includes: Bhargava, K.[Kriti] Bhargava, K.[Kushagra] Bhargava, K.[Kartikeya]
Bhargava, M.[Medha]
* 2007: Detection of abandoned objects in crowded environments
* 2009: Detection of object abandonment using temporal logic
* 2012: Automatic localization of the macula in a supervised graph-based approach with contextual superpixel features
* 2012: Early age-related macular degeneration detection by focal biologically inspired feature
* 2016: Joint Keystone Correction and Shake Removal for a Hand Held Projector
Includes: Bhargava, M.[Medha] Bhargava, M. Bhargava, M.[Mayuri] Bhargava, M.[Manevarthe]
Bhargava, N.
* 2013: Fast compensation of illumination changes for background subtraction
* 2013: Linear cyclic pursuit based prediction of personal space violation in surveillance video
* 2020: Multi-timescale Trajectory Prediction for Abnormal Human Activity Detection
Bhargava, P.
* 2019: On Generalizing Detection Models for Unconstrained Environments
Bhargava, R.[Rama]
* 2009: Depth Recovery of Complex Surfaces from Texture-less Pair of Stereo Images
* 2009: Reconstructing FT-IR spectroscopic imaging data with a sparse prior
* 2011: Region growing stereo matching method for 3D building reconstruction
* 2012: Three-Dimensional In Silico Breast Phantoms for Multimodal Image Simulations
* 2020: 2DInpaint: A novel privacy-preserving scheme for image inpainting in an encrypted domain over the cloud
* 2022: SecureDL: A privacy preserving deep learning model for image recognition over cloud
Includes: Bhargava, R.[Rama] Bhargava, R.[Rohit] Bhargava, R.
Bhargava, S.
* 2017: Dataset and a Technique for Generalized Nuclear Segmentation for Computational Pathology, A
* 2019: Multi-Level Multimodal Common Semantic Space for Image-Phrase Grounding
* 2019: Robust Authentication Using Dorsal Hand Vein Images
Includes: Bhargava, S. Bhargava, S.[Surabhi]
Bhargavi, M.S.
* 2015: novel validity index with dynamic cut-off for determining true clusters, A
Bharghavan, V.
* 2001: Forward error correction (FEC) codes based multiple description coding for internet video streaming and multicast
Bharkhada, D.[Deepak]
* 2007: comparative study on interpolation methods for controlled cardiac CT, A
Bharthavarapu, H.[Harika]
* 2013: Pairwise Kernels for Human Interaction Recognition
Bharti, B.[Brijendra]
* 2011: Vision based preceding vehicle detection using self shadows and structural edge features
Bharti, J.[Jyoti]
* 2019: Real time sign language recognition using depth sensor
* 2019: Real time vision-based hand gesture recognition using depth sensor and a stochastic context free grammar
* 2020: Automatic Seeded Region Growing Image Segmentation for Medical Image Segmentation: A Brief Review
* 2022: Breast Tumor Detection in MR Images Based on Density
Bharti, N.[Nita]
* 2020: Application of Reflectance Ratios on High-Resolution Satellite Imagery to Remotely Identify Eucalypt Vegetation
Bharti, P.
* 2019: Leveraging Smartphone Sensors to Detect Distracted Driving Activities
Bharti, P.K.
* 2023: New Design of Occlusion-Invariant Face Recognition Using Optimal Pattern Extraction and CNN with GRU-Based Architecture, A
Bharti, R.
* 2021: Time Series Analysis of Urbanisation Impact on the Temperature Variations Off Mumbai Coast
Bharti, S.[Siddhant]
* 2020: Inference Algorithm for Multi-label MRF-MAP Problems with Clique Size 100, An
Bharti, S.K.[Santosh Kumar]
* 2017: Harnessing Online News for Sarcasm Detection in Hindi Tweets
Bharti, T.[Taroon]
* 2021: M3P: Learning Universal Representations via Multitask Multilingual Multimodal Pre-training
Bharti, V.[Vandana]
* 2021: MetaMed: Few-shot medical image classification using gradient-based meta-learning
Bhartia, A.[Atul]
* 2006: DCT Domain Transcoding of H.264/AVC Video into MPEG-2 Video
Bhartia, P.K.
* 2006: Overview of the EOS Aura Mission
* 2013: Color Ratio Method for Simultaneous Retrieval of Aerosol and Cloud Optical Thickness of Above-Cloud Absorbing Aerosols From Passive Sensors: Application to MODIS Measurements, A
* 2020: Long-Term Cloud Albedo Data Record Since 1980 from UV Satellite Sensors, A
Includes: Bhartia, P.K. Bhartia, P.K.[Pawan K.]
Bharucha, A.
* 2004: Dining activity analysis using a hidden markov model
* 2008: Video measurement of resident-on-resident physical aggression in nursing homes
Includes: Bharucha, A. Bharucha, A.[Ashok]
Bharwani, S.[Seraj]
* 1985: Refinement of Environmental Depth Maps over Multiple Frames
* 1986: Refinement of Environmental Depth Maps over Multiple Frames