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Summary

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Description

There is ‘occlusion’ if there are things blocking your view of the road in the distance between the road and your car. For example, the environment outside the car might have dust, fog, heavy rain drops, heavy snow. Levels 

Non-Occluded (0) - Default o



Slightly-Occluded (1)

o



Light occlusion that may affected some elements in the image

Significantly- Occluded (2)

o



The is NOT affected and no type needs to be assigned.

Significant Occlusion in the image, visibility is low

Heavily-Occluded

o

The scene is barely visible

Cause 

Dust o

Dust coming from the ground or from a dust storm can occlude some parts of the image. They are typical from arid and desert areas.

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Fog o



Fog can also severely occlude the scenario.

Heavy Rain o

When there’s heavy rain, either the rain or splashes coming from other cars can occlude important elements in the scene.

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Heavy Snow

o

In the same way as the rain, when it snows heavily the snow or splashes coming from other cars can occlude important elements in the scene, usually more than in the rainy case.

There is ‘degradation’ if there are things that are preventing you from seeing the road clearly. For example: - the car’s wiper is in the way - many rain drops on the windshield - sunlight is bright and causing a glare on the windshield/road - it is night time and the lights are flaring.

Level Cause 

Sun-Glare o

Image quality is degraded by sunglare. Reflections from the sun on the windshield and road/objects also count as sunglare for the purpose of this tag.



Droplets [Water on windshield] o

When it’s raining, water sometimes accumulates on the windshield and obscures some part of the image. Main examples are droplets and smudged out regions.

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Snow [Snow/ice on windshield] o

Snow or ice/frost has accumulated on the windshield and degrades the image.

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Wiper [Wiper present]

o

Wipers can appear as a semi transparent purple strip or an opaque strip in the image, degrading the elements behind them.

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Light-flare [Light beams/flares] o

Beams or flares around light sources (not including the sun). Mostly occur at night or while raining....