نتایج جستجو برای: dust rgb

تعداد نتایج: 49631  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه هرمزگان - دانشکده علوم پایه 1391

در تحقیق حاضر توزیع زمانی و مکانی غبار در خلال سه رخداد گردوغباری شدید با استفاده از شبیه سازی بوسیله ی مدل wrf/dust ، مشاهدات ایستگاهی و تصاویر ماهواره ای مورد تجزیه و تحلیل قرار گرفته است. بدین منظور ابتدا سه مورد توفان گردوغبار شدید که روی ایران به وقوع پیوسته بود انتخاب شد. سپس شبیه سازی های عددی wrf/dust برای نشر، انتقال غبار و پارامترهای جوی مختلف اجرا شد. الگوهای همدیدی شبیه سازی شده برا...

2005
Iliana Marinova Hisashi Endo Yoshifuru Saito

An inverse approach is applied for image improving during visualization of electromagnetic fields. The red, green, blue color (RGB) model is used. The RGB color sources have been evaluated using the RGB color distributions of the electromagnetic field data set. The Generalized Sampled Pattern Matching method is applied to solve an ill posed linear system of equations for the corresponding inver...

2012
David da Silva Pires

We present an approach for motion estimation from videos captured by depth-sensing cameras. Our method uses the technique of graph matching to find groups of pixels that move to the same direction in subsequent frames. In order to choose the best matching for each patch, we minimize a cost function that accounts for distances on RGB and XYZ spaces. Our application runs at real-time rates for lo...

2013
Michael Langer

For your images, you will assume that the RGB photoreceptors of the camera have their dominant spectral sensitivities at long, medium, and short wavelengths respectively. (The exact spectral sensitivity is unknown.) You will also assume that the digital camera has mapped the light energy absorbed at each pixel in each RGB channel to a value in 0 to 255, using a non-linear mapping that is simila...

Extended abstract Introduction Dust storms are natural hazards that effect on weather conditions, human health and ecosystem. Atmospheric processes are directly affected by the absorption and diffusion of radiation by dust, and dust in the cloud acts as a nucleus of congestion. The main dust areas in the world are flat topographically dry areas with erosion-sensitive soil and poor vege...

Journal: :Nature Physics 2012

2005
Aigen Li

The year of 2005 marks the 75th anniversary since Trumpler (1930) provided the first definitive proof of interstellar grains by demonstrating the existence of general absorption and reddening of starlight in the galactic plane. This article reviews our progressive understanding of the nature of interstellar dust.

Introduction: Dust storms are natural hazards that effects on weather conditions, human health and ecosystem. Atmospheric processes are directly affected by the absorption and diffusion of radiation by dust, and dust in the cloud acts as a nucleus of congestion. The main dust regions in the world are arid topographies that have soil that is vulnerable to erosion and poor vegetation, easily erod...

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