Freaks City

Airy beams are a class of non-diffracting, self-accelerating optical fields whose propagation behaviors—such as intensity profile evolution, phase dynamics, and auto-focusing—are of great interest in optics. This article uses the Angular Spectrum Method (ASM) to simulate the propagation of one‑dimensional (1D) and two‑dimensional (2D) Airy beam ...

Color Features Color represents one of the most fundamental visual attributes in digital images, effectively characterizing image content and distinguishing objects. Color histogram-based retrieval leverages the distribution of color values across an image to establish similarity between images. A color histogram is a multi-dimensional array wh ...

GUI Application Structure function character_recognition_gui mainWindow = figure('Name','Character Recognition System',... 'Position',[150,150,850,650],'MenuBar','none'); inputSelection = uicontrol('Style','popupmenu',... 'String',{'Draw Character','Upload Image'},... 'Position',[120,580,160,25]); d ...

Theoretical Framework of the DUET Algorithm The Degenerate Unmixing Estimation Technique (DUET) is a popular method for Blind Source Separation (BSS) when the number of sources exceeds the number of sensors (the underdetermined case). It relies on the assumption of W-disjoint orthogonality, which posits that the time-frequency representations o ...

1. System Modeling: The Jeffcott Rotor The Jeffcott rotor is a classic representation for analyzing rotor-bearing systems, treating the rotor as a concentrated mass on a flexible, massless shaft. The following MATLAB implementation defines the state-space equations considering viscous damping, stiffness, and unbalance forces. % System paramete ...

Introduction A microgrid system incorporating wind power, photovoltaic (PV) generation, energy storage, and micro gas turbine is considered in this study. The optimization objective is to minimize the total operational cost, which includes grid power purchase costs, maintenance costs for PV panels and wind turbines, battery charging/discharg ...

Project Structure The implementation consists of several core components: main.m - Main script for orchestrating the conversion proces get_images.m - Core function handling signal processing and image generation axis_control.m - Utility for managing axis display settings Algorithms/ - Directory containing specialized transformation algorithms ...

Fundamentals of ISAR Imaging Inverse Synthetic Aperture Radar (ISAR) imaging transforms radar returns into high-resolution target images through signal procesisng techniques. The key processing stages are: Radar Echoes → Range Compression → Envelope Alignment → Phase Correction → Cross-Range Processing → ISAR Image Envelope Alignment Methods ...

Introduction Chaos-based image encryption algorithms have found widespread application across various industries. However, many existing encryption methods rely on low-dimensional chaotic systems, which compromises security and fails to meet modern cryptographic requirements. To address these limitations, this paper presents a novel image encry ...

The Simulink.SimulationData.Dataset class serves as a container for grouping simulation data, whether retrieving logged results or defining external inputs. Construction Syntax Instances can be initialized in three primary ways: obj = Simulink.SimulationData.Dataset: Generates an empty container. obj = Simulink.SimulationData.Dataset(sourceDat ...