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 Differences in ground truth | Reply I think there's a different criteria in highway road ground truth.Check the two way road on AOI_2_Vegas_img408 vs AOI_4_Shanghai_img1700.In Vegas image, there's a single line string and in Shanghai image there are two parallel line strings. Both seem highway with lane separation.
 Re: Differences in ground truth (response to post by chok68) | Reply Hello, Thank you for taking the time to look at the data. I am part of the team that put together the dataset for the competition.The labels were created using a uniform labeling guidelines. The guidelines can be found at https://spacenetchallenge.github.io/assets/docs/SpaceNetRoads_labeling_rules_v2.html. I've pulled out the definition used for a divided highway below.Definition of a divided highway: A divided highway is a road that has a median or barrier that physically prevents turns across traffic. A median can be: - Concrete - Asphalt - Green Space - Dirt/unpaved roadA median is not: - Yellow hatched lines on pavement. In this case, while the example in Shanghai is clearly a divided highway, the example in Las Vegas is not a divided highway. Thank you
 Re: Differences in ground truth (response to post by dlindenbaum) | Reply Thank you!