I believe this is because the rain particles that aren't near the vehicle don't render. It's a bit hard to see but what is interesting about this image is that the rain drops are visible in the image produced by the simulated camera (shown in the PyGame window on the right) but not visible in the CarlaUE4 window. I then reproduced this issue with my own custom configuration that uses a PyGame GUI built on manual_control.py.
Fog weather code#
I tried to reproduce this issue with my compiled 0.9.10 source code and with the manual_control.py script:īut you can see there are rain drops being rendered on this screen. All the precipitation values in the below images are set to 100. I tried to reproduce this just now and have some new information. | GPU GI CI PID Type Process name GPU Memory | | Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M.
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr.
Fog weather how to#
In #3494 the same issue is reported (the issue is indicating that it is a problem with the latest CARLA version), but no solution was given so far.Īny help how to have a more realistic raining (and fog) situation is nvidia-smi The sky becomes completely black, but the lighting of the town still works. carla.WeatherParameters(precipitation=95.0, precipitation_deposits=50, sun_altitude_angle=45, cloudiness=80, wetness=80, fog_density=80, fog_distance=1, fog_falloff=1), it seams that the sky box breaks. When setting up a weather condition including fog, e.g. This may be related to #3530 (similar needs but using CARLA version 0.9.9.4 instead).įurther, we're not able to create fog that is observable. It is only possible to observe that it is actually raining by checking the visible drops in the precipitation deposits (see image below). Whether using the presets provided by the carla.WeatherParameters object nor setting the precipitation value manually resulted in visible rendered rain in the air (visual range is identical as well). Unfortunately, we are not able to achieve this. We want to have some heavy rain or fog situation which is limiting the visual range of the vehicles (or that is at least noticeably observable). (Tested with the CARLA server window, as well as, with the CARLA internal camera object using the official manual_control.py example client.) Specifically, it seems that rain and fog are not properly rendered. Radiation fog also is very common throughout the United States during the fall and winter months.įor information on flight safety considerations, see the separate article Shallow fog: Guidance for flight crews.We're having some issues with the weather in CARLA (using the pre-packaged CARLA version 0.9.10.1 for Ubuntu). This situation is common in the autumn in northern Europe when some airfields may be affected by fog for many days. If the fog is particularly thick, then it may prevent the sun from heating the surface and the fog will not clear. Thicker instances of radiation fog tend to form in valleys or over calm bodies of water.Īs the sun rises, and the surface temperature increases, the air in contact with the surface will warm and the fog will gradually disperse or may rise to form a low layer of stratus. With stronger winds, the fog may lift to form layers of Stratus.
However, if there is a light wind of around 5 kts, then this will mix the air in contact with the surface and the layer of fog will be thicker. Air does not conduct heat very well so in still air conditions fog may not form at all and a layer of dew or frost will form on the surface instead. Initially it may be mist that forms and then thickens into fog as the temperature drops and more water vapour condenses into water droplets in the air. The three conditions required for radiation fog are: This type of fog is known as radiation fog. Moist air in contact with cooling surface also cools and when the temperature falls below the dew point for that air, fog forms. On a cloudless night, especially within a high pressure system, the land surface loses heat to the atmosphere by radiation and cools. Shallow fog is almost always a form of radiation fog. The METAR code for shallow fog is "MIFG" - MI (descriptor) = shallow, FG (weather phenomena) = fog. In weather-observing terminology, a shallow fog is a low-lying fog that does not obstruct horizontal visibility at a level 2 m (6 ft) or more above the surface of the earth.
0 kommentar(er)
