Related Experiment Video
Updated: Oct 16, 2025

11:12
Driving Simulation in the Clinic: Testing Visual Exploratory Behavior in Daily Life Activities in Patients with Visual Field Defects
Published on: September 18, 2012
17.6K
Simulation of Atmospheric Visibility Impairment
Summary
Simulating atmospheric visibility impairment is crucial for developing adaptive computer vision algorithms. This study introduces novel simulation strategies for mist, fog, haze, smog, and dust, creating a large-scale dataset for research.
Area of Science:
- Computer Vision
- Atmospheric Science
- Image Processing
Background:
- Visibility impairment affects outdoor vision systems.
- Collecting real-world data for low visibility is challenging.
- Existing simulation methods have limitations and violate physical laws.
Purpose of the Study:
- Analyze limitations of current atmospheric visibility simulation.
- Develop accurate simulation strategies for common visibility impairments.
- Create a large-scale dataset for computer vision research.
Main Methods:
- Investigated atmospheric science literature.
- Developed simulation strategies for mist, fog, natural haze, smog, and Asian dust.
- Generated a synthetic dataset of 40,000 clear and 800,000 impaired images.
Main Results:
- Identified irrationalities in existing visibility simulation schemes.
- Proposed physically plausible simulation methods for diverse atmospheric conditions.
- Established a link between atmospheric science and computer vision simulation.
Conclusions:
- The proposed methods enable realistic simulation of atmospheric visibility.
- The generated dataset facilitates the development of robust vision algorithms.
- This work supports reproducible research in environmental computer vision.
Related Concept Videos
Sight Distance in a Vertical Curve
155
Sight distance on vertical curves is critical in roadway design. It ensures drivers can see far enough ahead to identify and respond to hazards effectively. This directly impacts safety, driver comfort, and the overall efficiency of the transportation network.Vertical curves are classified into crest and sag curves based on their geometry. For crest curves, sight distance is determined by the line of sight between a driver's eye and a small object on the road's surface. Design parameters for...
155
Influence of Earth's Curvature and Atmospheric Refraction on Leveling
346
During leveling, the Earth's curvature and atmospheric refraction introduce deviations in the line of sight from a true horizontal reference. When the line of sight is leveled, it remains perpendicular to the plumb line only at a single point. Beyond this, it deviates due to the Earth’s curvature, represented by the correction C. For a sight distance D, the deviation can be derived using the relationship:This relationship shows that the deviation increases quadratically with distance.
346
Variation of Atmospheric Pressure
3.1K
Change in atmospheric pressure with height is particularly interesting. The decrease in atmospheric pressure with increasing altitude is due to the decreasing gravitational force per unit area as we move away from the surface of the earth.
Assuming the air temperature is constant at a given altitude and that the ideal gas law of thermodynamics describes the atmosphere to a good approximation, one can find the variation of atmospheric pressure with height.
Let p(y) be the atmospheric pressure at...
Assuming the air temperature is constant at a given altitude and that the ideal gas law of thermodynamics describes the atmosphere to a good approximation, one can find the variation of atmospheric pressure with height.
Let p(y) be the atmospheric pressure at...
3.1K
Viscosity of Fluid
816
Viscosity measures the resistance a fluid offers to flow and deformation. It results from internal friction between layers of fluid moving relative to one another. Dynamic viscosity, denoted by the Greek letter mu (μ), quantifies the force needed to move one fluid layer over another. For Newtonian fluids like water and air, the relationship between the shearing stress and the rate of shearing strain is linear, meaning their viscosity remains constant regardless of the applied stress.
816
Boundary Layer Characteristics
260
When a fluid encounters a solid surface, a boundary layer forms due to the interaction between the fluid's motion and the stationary surface. This phenomenon is characterized by a thin region adjacent to the surface where viscous forces dominate, influencing the fluid's velocity profile. The development of the boundary layer begins at the leading edge of the surface and evolves as the fluid moves downstream.As the fluid flows over the surface, friction between the fluid and the wall slows down...
260
Precipitation Processes
700
The experimental conditions in a gravimetric analysis should be optimized to maximize the particle size and purity of the obtained precipitate. Ideally, the concentration of the precipitating reagent should be low with effective stirring to maintain low relative supersaturation for the growth of large crystals. In homogeneous precipitation, the precipitant is slowly generated by a chemical reaction in the solution to avoid local reagent excesses. For example, urea decomposes gradually to...
700

