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ویرایش: نویسندگان: Asha Rani, Bhavnesh Kumar, Vivek Shrivastava, Ramesh C. Bansal سری: Lecture Notes in Electrical Engineering, Volume 1023 ISBN (شابک) : 9789819909681, 9789819909698 ناشر: Springer سال نشر: 2023 تعداد صفحات: [659] زبان: English فرمت فایل : PDF (درصورت درخواست کاربر به PDF، EPUB یا AZW3 تبدیل می شود) حجم فایل: 30 Mb
در صورت تبدیل فایل کتاب Signals, Machines and Automation. Select Proceedings of SIGMA 2022 به فرمت های PDF، EPUB، AZW3، MOBI و یا DJVU می توانید به پشتیبان اطلاع دهید تا فایل مورد نظر را تبدیل نمایند.
توجه داشته باشید کتاب سیگنال ها، ماشین آلات و اتوماسیون. مجموعه مقالات SIGMA 2022 را انتخاب کنید نسخه زبان اصلی می باشد و کتاب ترجمه شده به فارسی نمی باشد. وبسایت اینترنشنال لایبرری ارائه دهنده کتاب های زبان اصلی می باشد و هیچ گونه کتاب ترجمه شده یا نوشته شده به فارسی را ارائه نمی دهد.
این کتاب مجموعه مقالات منتخب بررسی شده از دومین کنفرانس بین المللی سیگنال ها، ماشین ها و اتوماسیون (SIGMA 2022) است. این کتاب شامل مقالاتی در مورد فن آوری های مربوط به برق، فرآیندهای تولید و اتوماسیون، زیست پزشکی و مراقبت های بهداشتی، ارتباطات و شبکه، پردازش تصویر و هوش محاسباتی است. این کتاب به عنوان یک منبع مرجع ارزشمند برای مبتدیان و همچنین محققان پیشرفته در زمینه های مهندسی و فناوری خواهد بود.
This book constitutes selected peer-reviewed proceedings of the 2nd International Conference on Signals, machines, and Automation (SIGMA 2022). This book includes papers on technologies related to electric power, manufacturing processes & automation, biomedical & healthcare, communication & networking, image processing, and computation intelligence. The book will serve as a valuable reference resource for beginners as well as advanced researchers in the areas of engineering & technology.
Preface Contents About the Editors Power System Technologies Investigating the Application of Ethereum Smart Contracts in Energy Exchanges 1 Introduction 2 Digital Energy Ecosystem 3 Smart Contract Creation 3.1 Agreement Modelling 3.2 Smart Contract Definition 4 Smart Contract Deployment 5 Smart Contract Interaction 6 Conclusion References Feasibility Analysis of V2G Operation in India and Cost Minimization for EV Car Parks Using Firefly Algorithm 1 Introduction 2 Literature Review 3 Development of the Model for Feasibility Analysis of V2G Operation in India 3.1 Component Information 3.2 Simulation Model 3.3 Feasibility Analysis Objectives 4 Mathematical Model for Cost Minimization of V2G Enabled EV Charging in a Car Park 5 Firefly Algorithm 6 Optimization Implementation Procedure of the Proposed System 7 Results 7.1 Feasibility Analysis of the Proposed System Using HOMER Pro Software 7.2 Cost Optimization Results Using MATLAB/Simulink Software 8 Conclusion References Piezoelectric Sensors for the Conversion of Noise Pollution into Electricity 1 Introduction 1.1 Impact of Noise Pollution on Human Health 1.2 Potential of Noise Pollution 2 Piezoelectric Sensor for Noise Pollution Energy Converter 3 Role of Resonator as Pre-amplifier 4 Noise/Sound to Electric Energy Conversion 5 Practical Model of Noise Pollution Energy Converter 6 Conclusion References Implementation of Single-Phase Cascaded Seven-Level Inverter with Non-isolated Converter 1 Introduction 2 Cascaded H-Bridge (CHB) MLI 2.1 Cascaded Seven-Level Inverter 2.2 Projected Seven-Level Cascaded H-Bridge MLI 3 Modes of the Process of the Designed Technique 4 Results and Discussion 4.1 Proposed Arrangement Simulation Results 4.2 Proposed Arrangement PROTEUS Setup 5 Conclusion References An Adaptive and Efficient VSC-MTDC Controller for DC Voltage Regulation and Frequency Stability in AC Network 1 Introduction 2 Dual-Droop Control for Multi-terminal HVDC Grid 3 Proposed Dual-Droop Control Strategy 4 Simulations and Result 5 Conclusion References Planning of Load Frequency Control in Two Degrees of Freedom PID Controller Using MFO Technique in 2 Area Power System 1 Introduction 2 System Understudy 3 2-DOF and PID Controller 4 Moth Flow Algorithm 5 Simulation Result 6 Conclusion References Optimization of Cost and Sensitivity Analysis of a Standalone Microgrid 1 Introduction 2 Proposed Scheme 2.1 Determination of Daily Load Profile 2.2 Metrological Data 2.3 Schematic Model Diagram 2.4 Problem Description 3 Results and Discussion 3.1 Cost and Sensitivity Analysis 3.2 Economic Analysis 3.3 Time Series Analysis 4 Conclusion References Analysis and Mitigation of Hall Sensor Glitch Effects in Brushless DC Motor Based E-Vehicle Controller 1 Introduction 2 Background 3 Experimental Setup and Signal Analysis 4 Comparative Analysis and Discussion 5 Conclusion References Radial Basis Function Neural Network with Wavelet Transform for Fault Detection in Transmission Line 1 Introduction 2 Wavelet-Based Transmission Line Fault Detection 3 Radial Basis Function Neural Network (RBFNN) 4 Experiment and Result 5 Conclusion References Study of DVR Controller for Mitigation of Three-Phase System Short Duration Fault 1 Introduction 2 DVR System Modelling 2.1 DVR Components 2.2 DVR Operation 2.3 DVR Performance Calculation 2.4 System Modeling Parameters 3 Artificial Neural Network-Based Controller 3.1 Controlling Scheme 3.2 Mathematical Control Technique of DVR 4 Simulation and Result 4.1 Analysis and Discussion 5 Conclusion References Annual Cost and Power Loss Minimization in a Radial Distribution Network by Capacitor Allocation 1 Introduction 2 Problem Formulation 2.1 Constraints 3 Imperialist Competitive Algorithm 4 Results and Discussion 4.1 IEEE 33-Bus System 5 Conclusion References Automated Signal Monitoring of LT8228 Buck–Boost Converter 1 Introduction 2 Working of Bidirectional DC–DC Converter 3 Hardware Setup Description 4 Software Requirements 5 Experimental Result 6 Conclusion References Energy Management System of Standalone DC Microgrid 1 Introduction 2 DC MG Structure 2.1 PV System 2.2 Battery System 3 Proposed Energy Management Strategy 4 Simulation Results 5 Conclusion References State Estimation in Active Power Distribution Systems Using Phasor Measurement Units 1 Introduction 2 PMU Modeling 3 State Estimation Model 4 Simulation Model 5 Simulation Results and Discussions 6 Conclusion References Online Estimation of Voltage Stability Margin Using PMU Data 1 Introduction 2 Voltage Collapse Indicators 2.1 AC State Estimation Model 3 Voltage Stability Index 3.1 Proposed Methodology 3.2 Flowchart 4 Result and Discussion 4.1 Two-Bus System 4.2 IEEE 14-Bus System 5 Conclusion References Design and Implementation the Active Clamp Forward Converter for Electric Vehicles Application 1 Introduction 2 Circuit Description and Analysis 3 Procedure for Designing Active Clamp Forward Converter 4 Simulation Results and Discussion 5 Conclusion References Renewable Energy Technologies A Comparative Study on Metaheuristic-Based Reconfiguration Strategies for Non-uniformly Shaded PV Array 1 Introduction 2 System Description 2.1 Modeling of PV Cell 2.2 TCT Configured PV Array 3 Metaheuristic Optimization Algorithms 3.1 Grasshopper Optimization Algorithm (GOA) 3.2 Particle Swarm Optimization 4 Results and Discussion 5 Conclusion References Modeling and Analysis of Wind-Driven PMSG for Healthy and Unhealthy Conditions 1 Introduction 2 Modeling of Wind Turbine 3 Modeling of PMSG 4 Performance Assessment with Balanced and Unbalanced Condition 5 Conclusions References Performance Analysis of Fuzzy Logic-Based MPPT Controller 1 Introduction 2 PV System Modeling 2.1 PV Cell 2.2 DC–DC Converter 3 MPPT Algorithm 3.1 Perturb and Observe (P&O) 3.2 Incremental Conductance (INC) 3.3 Fuzzy Logic Control (FLC) 4 Simulations and Results 5 Conclusion References Optimum Power Tracking of DFIG-Based Wind Energy Conversion System 1 Introduction 2 Wind Turbine Modeling 3 Maximum Power Point Tracking Techniques 3.1 Indirect MPPT Technique 3.2 Optimal Torque Control Method 4 Control of DFIG Based WECS 4.1 Design of Battery Storage System 4.2 Design and Control of RSC 4.3 Design and Control of GSC 4.4 PI Controller Design 5 Results and Discussion 6 Conclusions References To Design an Optimal PV/Diesel/Battery Hybrid Energy System for Havelock Island in India 1 Introduction 2 Overview of Havelock Island 2.1 Havelock Profile 2.2 Consumption Estimation of Demand Projection for Domestic Consumers 3 Exquisite Hybrid Representation of Havelock Island 3.1 About HOMER 3.2 Details of Havelock Island 3.3 Load Profile of Havelock Island 4 Architectonics Structure Representation of Havelock Island 5 Results Obtained for the Suggested Model at Havelock Island 5.1 Stimulated and Computed Outcome 5.2 Net Present Cost (NPC) 6 Emission Due to Distinct Contaminating Particles at Havelock Island 7 Comparative Analysis of Diesel-Only System and Optimal Hybrid System 8 Conclusions References To Design an Optimal Hybrid Energy System for Agatti Island in India 1 Introduction 2 Overview of Agatti Island 2.1 Agatti Profile 2.2 Consumption Estimation of Demand Projection for Domestic Consumers 2.3 About HOMER 2.4 Load Profile of Agatti Island 3 Architectonics Structure Representation of Agatti Island 4 Results Obtained for the Suggested MODEL at Agatti Island 4.1 Stimulated and Computed Outcome 4.2 Net Present Cost (NPC) 5 Emission of the Diesel-Only System and Optimal Hybrid System at Agatti Island 6 Comparative Analysis of Diesel-Only System and Optimal Hybrid System 7 Conclusions References Access to Solar Energy for Livelihood Security in Odisha, India 1 Introduction 2 Materials and Methods 2.1 Solar PV System Components 3 Results and Discussion 4 Conclusion References Grid-Connected Fuel Cell with Upgraded Voltage Profile 1 Introduction 2 Mathematical Modelling 2.1 Modelling of PEMFC 2.2 Modelling of Boost Converter 3 Control Structure 3.1 PID Controller 3.2 Seven-Level Cascaded Multilevel Inverter 3.3 Whale Optimization Algorithm 4 MATLAB/Simulink Model 5 Results 6 Conclusion References Performance Analysis and Comparison of a Solar Tree with Stand-Alone System 1 Introduction 2 Design of Solar Tree 2.1 Solar Tree Stem and Branches 2.2 Stand-Alone System 3 Modeling of Solar PV Panel 4 Results and Discussion 5 Conclusion References Comparative Analysis of Series–Parallel and Bridge Link Configurations Under Various Partial Shading Conditions 1 Introduction 2 Mathematical Modeling 3 Simulation Modeling and Results 4 Conclusion References Advanced Control Technologies Necessary and Sufficient Delay-Independent Stability Conditions for Commensurate Time Delay Systems 1 Introduction 2 Problem Formulation 3 Preliminaries 4 Algebraic Necessary and Sufficient Delay-Independent Stability Conditions 5 Numerical Example and Discussion 6 Concluding Remarks References Adaptive Neuro Fuzzy Control of Triple Inverted Pendulum System 1 Introduction 2 Nonlinear Dynamical Equations of Triple Inverted Pendulum 3 PID-Based ANFIS Control of Triple Inverted Pendulum 4 Simulation Results 5 Conclusion References Adaptive Control of DC Microgrid Using EMS and Meterological Data 1 Introduction 2 Scope of Work 3 Coding for Optimal Scheduling 3.1 Logic 3.2 Flow Chart of Proposed Work 3.3 Explanation 4 Output and Results 5 Conclusion References Model Order Reduction of Linear Interval System by Using Firefly Algorithm and Extension of Differentiation Method 1 Introduction 2 Problem Methodologies 2.1 The Method for Obtaining Reduced-Order Denominator Polynomials D1 (s) from the Denominator of the Original “Interval Transfer Function” Model Y(s) 2.2 Procedure to Achieve Reduced-Order Numerator Polynomial N1 ( s ) Using Firefly Optimization Algorithm 3 Results and Discussion 4 Conclusion References Optimum LQR Controller for Inverted Pendulum Using Whale Optimization Algorithm 1 Introduction 2 Mathematical Modelling of Inverted Pendulum 3 Controller Design 4 Optimisation of Controller 4.1 Genetic Algorithm 4.2 Whale Optimization Algorithm 5 Simulation and Results 5.1 Uncertainty Analysis 6 Conclusion References Indirect Adaptive Control of Nonlinear System Using Recurrent Neural Network 1 Introduction 1.1 Contributions and Novelties of the Paper 2 Overview of LRNNIFT 2.1 Indirect Adaptive Control of a Time-Delayed Nonlinear System 3 Simulation Study 4 Conclusion References Solar Fed Speed Control of Water Pumping System Using Constant Voltage Controlled MPPT Technique and PI Controller 1 Introduction 2 System Modeling 2.1 Design of PV Array 2.2 Constant Voltage Controlled MPPT Algorithm 2.3 Separately Excited DC Motor 3 Simulation Result 4 Conclusion References An Intelligent MPPT Technique for a Three-Stage Battery Charge Controller for Standalone System 1 Introduction 2 Methodology 2.1 Solar PV System 2.2 Buck Converter 2.3 MPPT Algorithm–Fuzzy Logic Controller 2.4 MPPT Algorithm–Perturb and Observe 3 Results and Discussion 3.1 Performance of the Solar PV Panel 3.2 Performance of the Lead/Acid Battery 4 Conclusion References Performance Analysis of BLDC Motor Drive Using Various Speed Controller 1 Introduction 2 Mathematical Modeling of BLDC Motor 3 Speed Controlling Methods 3.1 PI Controller 3.2 PID Controller 3.3 Fuzzy Logic Controller 4 Control of BLDC Motor Drive 5 Results and Discussions 5.1 Performance Analysis of BLDCM Drive at Rated Speed 5.2 Performance Analysis of BLDCM Drive at Step Changes in the Speed 6 Conclusion References Liquid Level Control of Coupled Tank System Using FOPID Controller 1 Introduction 2 Coupled Tank System 3 Fractional Order PID (FOPID) Controller 4 Particle Swarm Optimization (PSO) 5 FOPID Using PSO 6 Conclusion References Investigation of an Intelligent Control Technique Applied in NPK Model of the AHWR System 1 Introduction and Literature Studies 2 Problem Formulation and Plant Modelling 3 Intelligent Controller Design and Tuning Using GA 4 Investigation of Trajectory Tracking for Demand Power 5 Conclusion References Healthcare Technologies Brain Tumor Recognition and Classification of MRI Images Using a Convolutional Neural Network Model 1 Introduction 2 Literature Review 3 Algorithm 4 Methodology 4.1 Data Augmentation 5 Result 6 Conclusion References Effect of Biohazard Waste on Human Health 1 Introduction 2 Literature Review 3 Types of Biohazard Solid Waste 4 Collection and Disposal of Biohazard Solid Waste 5 Treatment by Developed Nation 6 Future Suggestions 7 Conclusion References Game-Stress-Tracker: EEG-Based Smart Advisor Bot for Stress Detection During Playing BGMI Game 1 Introduction 2 Literature Survey 3 Proposed Work 3.1 Dataset Collection 3.2 Filtering 3.3 Feature Extraction 3.4 Classification 3.5 Game Rating Calculation 4 Result 4.1 EEG Placement and Dataset Collection 4.2 Brain Map and Telegram Bot 5 Conclusion and Future Work References An Efficient EMG Denoising Technique Based on the W-NLM Method 1 Introduction 2 Materials and Methods 2.1 Discrete Wavelet Transform (DWT)-Based Denoising 2.2 Nonlocal Means (NLM)-Based Denoising 3 Proposed W-NLM EMG Denoising Method 4 Experimental Results 5 Conclusion and Future Scope References 2DOF PID-Based Controller for Chemotherapeutic System 1 Introduction 2 Cancer Model 3 2DOF Proportional Integral Derivative Controller 4 Validation 4.1 Step Response Analysis 4.2 Bode Analysis 4.3 Parameter Perturbation 4.4 Disturbance Analysis 5 Conclusion References A Comparative Analysis of CNN Architectures for Classifying Pneumonia Variants and COVID-19 Using CXR Images 1 Introduction 2 Literature Review 3 Experimentation Environment 4 Research Methodology 4.1 Data Preprocessing 4.2 CNN Architectures 5 Results and Discussion 6 Conclusion References Multi-objective Control-Based Artificial Pancreas for Type-1 Diabetic Patients 1 Introduction 2 Dynamics of Type-1 Diabetics 3 Multi-objective Control of AP System Using LMI Technique 4 Simulation 5 Conclusion References A Hybrid Ensemble Deep Learning Model for COVID-19 Detection Using CT Scan 1 Introduction 2 Methodology 2.1 ResNet50 2.2 InceptionV3 2.3 Hybrid Ensemble Model 3 Results and Discussions 3.1 Dataset 3.2 Accuracy 3.3 Discussion 4 Conclusion References Communication and Network Technologies Integrated Frequency Reconfigurable Elliptical Slot Antenna and Inverted-L Slot MIMO Antenna for 4G and 5G Wireless Handheld Devices 1 Introduction 2 Proposed Antenna Design 3 Result and Discussion 3.1 Diversity Performance of Proposed Antenna 4 Conclusion References Design and Investigation of an Improved FTTH Network for Superior Quality Triple-Play Services 1 Introduction 2 Methodology and System Design 2.1 Simulation Setup 3 Results and Discussion 4 Conclusion References An Electronically Tunable Digitally Controlled Current Mode Quadrature Oscillator Using DC-VDTA 1 Introduction 2 DC-VDTA 3 Digital Control Unit (DCU) 4 Proposed QO 5 Non-ideal and Sensitivity Analysis 6 Simulation Results 7 Conclusion References Investigation of 4 × 4 Spatial Multiplexed Transceiver FSO Link Under Strong Turbulence Condition 1 Introduction 2 Proposed System Model Description 3 Simulation Parameters and Result Discussion 4 Conclusion References Current-Mode Full-Wave Rectifier Based on Transconductance-Boosted Bulk-Driven CDTA and Two Diodes 1 Introduction 2 Bulk-Driven Current Differencing Transconductance Amplifier (BDCDTA) 3 Transconductance-Boosted BDCDTA Approach 4 Proposed Full-Wave Rectifier Design Based on Transconductance-Boosted BDCDTA 5 Simulation Results 6 Conclusion References Effective Coverage Analysis for Wireless Multihop Sensor Network Incorporate Overlapping 1 Introduction 2 System Model 2.1 The Mathematical Expression for Overlap Area 2.2 Coverage Estimation Using Boolean Sensing Model 3 Simulation Result and Discussion 4 Conclusion References Performance Investigation of Photonic Radar for Autonomous Vehicles’ Application Under Various Degrading Conditions 1 Introduction 2 System Description 3 Results and Discussion 4 Conclusion References An Enhanced IoT and LoRa-Based Communication System for Underground Mines 1 Introduction 2 Related Work 3 Proposed Model System Architecture 4 Results and Discussion 5 Conclusion References Performance Comparison of Various Optical Amplifiers for DP-QPSK-Based Ultra-Dense WDM System at a Narrow Channel Spacing of 25 GHz 1 Introduction 2 Simulation Model and Set up 3 Results and Discussions 4 Conclusion References High-Computing Technologies Attaining Real-Time for Microscopic Images Using GAN 1 Introduction 2 Related Work 3 Method 3.1 Data Generation and Tiling Strategy 3.2 GAN Architecture and Improvements 3.3 Loss Function and Label Smoothing 3.4 Training Schedule and Inference Process 3.5 Image Similarity Measures 4 Experimental Results 4.1 Qualitative Results 4.2 Quantitative Results 4.3 Evaluation of Running Time for Modified SRGAN 5 Conclusion References Grey Wolf Optimization-Based PV Array Reconfiguration to Enhance Global Maximum Power Point Under PSCs 1 Introduction 1.1 Literature Review 2 PV Technology and Modeling 2.1 Conventional SP and TCT Configurations 2.2 Grey Wolf Optimization-Based PV Array 2.3 Shading Scenarios 3 Performance Assessment: Power Loss and Fill Factor 4 Results and Discussion 4.1 I–V and P–V Curves During Shading Cases: I 5 Conclusion References A Modified Ion-Motion Optimization Algorithm for Optimal Generation Scheduling in Multi-area Power System 1 Introduction 2 MA-ELD Issue 2.1 Cost Function (CF) 2.2 Constraints 3 Ion-Motion Optimization (IMO) 4 Modified IMO (MIMO) 5 Results and Discussions 6 Conclusions References Using GPU and TPU Hardware Accelerators to Develop a Cloud-Based Genetic Algorithm System 1 Introduction 2 Literature Review 3 The Proposed Methodology 4 Results and Discussions 5 Conclusion References Pattern Recognition of Human Fingerprint Utilizing an Efficient Artificial Intelligence Algorithm 1 Introduction 2 Methodology 2.1 Fingerprint Recognition System Utilizing Neural Network 3 The Proposed Model 4 Results and Discussion 5 Conclusions References A Systematic Review of Human Fall Detection Algorithms Using Machine Learning 1 Introduction 2 Classification of Approaches and Method in Human Fall Detection 2.1 Threshold-Based Human Fall Detection Approaches 2.2 Machine Learning-Based Human Fall Detection Approaches 3 Obstacles Approaching in Non-machine Learning System’s 4 New Emerging Trends and the Research Findings of Fall Detection System’s 4.1 Trends 4.2 Research Findings 5 Conclusions and Future Work References Convolutional Neural Network to Predict Soil Texture Classes 1 Introduction 2 Experimental Setup and Image Acquisition 3 CNN for Soil Texture Classification and Result Discussion References Customer Churn Analysis of a Financial Firm 1 Introduction 2 Data Preprocessing 3 Data Modeling 3.1 Model Building 3.2 Assessing the Model 4 Data Visualization 5 Conclusion References Consistency Assessment of OpenStreetMap Road Dataset of Haryana and Punjab Using K-means and Elbow Method 1 Introduction 2 Objective and Contribution 3 Methodology 3.1 Data Selection and Collection 3.2 Quality Assessment 4 Result and Discussion 5 Conclusion and Future Scope References Performance Evaluation of Time Series Analysis on the Dataset of Airline Passengers: An Exploratory Data Analysis 1 Introduction 2 Execution Requirements 3 Application of Time Series Analysis 4 Discussion 5 Conclusion References Vehicle Classification for Autonomous Vehicles Using Transfer Deep Learning 1 Introduction 2 Related Work 3 Methodology and Experimental Results 4 Conclusions and Future Research Direction References Self-attention-based Human Activity Detection Using Wearable Sensors 1 Introduction 2 Related Work 3 Proposed Scheme 3.1 Embedding Layer 3.2 Encoder (LSTM) 3.3 Attention Layer 3.4 Softmax (SM) 3.5 Learning Mechanism 4 Simulation Results 5 Conclusion and Future Work References Solar Irradiation Prediction Using Neural Networks 1 Introduction 2 Location and Parameter of Study 3 Methods 3.1 Feedforward Artificial Neural Network 3.2 Autoregressive 4 Results 4.1 Using Feedforward ANN 4.2 Using RNN 4.3 Using Autoregressive 4.4 Model Comparison 5 Conclusion References Experimenting Transfer Learning and Machine Learning on Endoscopy Database with Augmentation 1 Introduction 2 Related Studies 3 Problem Formulation and Methodology 4 Results 5 Conclusion References Optimal Planning of EV Charging Infrastructure in Distribution System 1 Introduction 2 Problem Formulation 3 Methodology 4 Charging Infrastructure Designing 5 Results and Discussions 6 Conclusion References Perception-preserving Color Ocular-image Enhancement Through Multi-scale and Multiresolution Features 1 Introduction 2 Proposed Algorithm 2.1 RGB to LAB Space Transformation of the Input Image 2.2 Sub-band Coding of Luminance Component L∗ Using UDWT 2.3 Re-map Detail Coefficients Using Local–global Statistics 2.4 MMF on Modified Coefficients Followed by Reconstruction 3 Experimental Results 4 Conclusion References