相关实验视频

Updated: Sep 18, 2025

Scattering And Absorption of Light in Planetary Regoliths

Scattering And Absorption of Light in Planetary Regoliths

Published on: July 1, 2019

通过分离辐射转移方程生成合成非同质雾

Marcell Beregi-Kovacs¹, Balazs Harangi¹, Andras Hajdu¹

¹Faculty of Informatics, University of Debrecen, 4028 Debrecen, Hungary.

Journal of imaging

|June 25, 2025

概括

本研究介绍了一种基于物理的方法,用于实现现实的雾合成,改善自主导航和AR的图像现实性. 该方法模拟复杂的雾变化,在视觉保真方面表现优于传统方法.

科学领域:

计算机视觉计算机视觉
图像合成图像合成
科学计算科学计算

背景情况:

现实的雾合成对于自主导航,增强现实和视觉效果等应用至关重要.
现有的方法通常假设均的雾和简化的散射,限制物理精度.
传统技术包括Koschmieder定律和基于生成对抗网络 (GAN) 的图像翻译.

研究的目的:

开发一种以物理为导向的方法,用异构的多散射合成空间不均的雾.
为了提高合成雾效应的结构一致性和感知可信性.
在具有挑战性的可见性条件下提高图像增强的物理现实性.

主要方法:

辐射转移方程 (RTE) 的分离化,以建模复杂的雾现象.
纳入空间变化的雾分布.
模拟异型多散射效应以增强现实主义.

主要成果:

与基于Koschmieder和基于GAN的基线相比,提出的基于RTE的方法显示出更高的性能.
与Koschmieder定律相比,实现了比Koschmieder定律低10%的Fréchet发射距离 (FID).
与CycleGAN相比,FID降低了42%,并改善了皮尔森相关性.
产生结构一致和感知可信的雾效应.

结论:

基于RTE的雾合成方法在物理现实主义和视觉真实性方面提供了显著的改进.
它可以为需要具有挑战性的可见性条件的应用程序提供更准确的图像增强.
张量计算的高内存要求对实时或大规模部署构成挑战.

关键词:

分密化 (Discretization) 是指对信息进行分密化.雾合成雾合成图像增强图像增强图像增强在同质的介质中.物理建模物理建模辐射转移方程的辐射转移方程

更多相关视频

Agarose-based Tissue Mimicking Optical Phantoms for Diffuse Reflectance Spectroscopy

Agarose-based Tissue Mimicking Optical Phantoms for Diffuse Reflectance Spectroscopy

Published on: August 22, 2018

Generation of Dynamical Environmental Conditions using a High-Throughput Microfluidic Device

Generation of Dynamical Environmental Conditions using a High-Throughput Microfluidic Device

Published on: April 17, 2021

相关概念视频

Maxwell-Boltzmann Distribution: Problem Solving

Maxwell-Boltzmann Distribution: Problem Solving

Individual molecules in a gas move in random directions, but a gas containing numerous molecules has a predictable distribution of molecular speeds, which is known as the Maxwell-Boltzmann distribution, f(v).
This distribution function f(v) is defined by saying that the expected number N (v1,v2) of particles with speeds between v1 and v2 is given by

Radiation Pressure: Problem Solving

Radiation Pressure: Problem Solving

The radiation pressure applied by an electromagnetic wave on a perfectly absorbing surface equals the energy density of the wave. The wave's momentum also gets transferred to the surface when an electromagnetic wave is entirely absorbed by it. The rate at which momentum is transmitted to an absorbing surface perpendicular to the propagation direction equals the force on the surface.
The average value of the rate of momentum transfer divided by the absorbing area represents the average force...

Uniform Depth Channel Flow: Problem Solving

Uniform Depth Channel Flow: Problem Solving

To calculate the flow rate for a trapezoidal channel, first, identify the bottom width, side slope, and flow depth of the channel. The cross-sectional area (A) corresponding to the depth of flow (y), channel bottom width (B), and side slope (θ) is determined by:Next, calculate the wetted perimeter, which includes the bottom width and the sloped side lengths in contact with the water. Using the values of the cross-sectional area and the wetted perimeter, determine the hydraulic radius by...

Turbulent Flow: Problem Solving

Turbulent Flow: Problem Solving

Carbonation is a process used to dissolve carbon dioxide gas in a liquid, commonly used in the production of carbonated beverages. Achieving efficient carbonation requires careful control of temperature, pressure, and flow conditions. By adjusting these parameters, carbonation efficiency can be maximized, producing a higher concentration of CO2 in the liquid.
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures...

Poisson's And Laplace's Equation

Poisson's And Laplace's Equation

The electric potential of the system can be calculated by relating it to the electric charge densities that give rise to the electric potential. The differential form of Gauss's law expresses the electric field's divergence in terms of the electric charge density.

Generating Electromagnetic Radiations

Generating Electromagnetic Radiations

The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in...