Investigate if the validation set has any rotated images

neptune-ai / open-solution-mapping-challenge

Open solution to the Mapping Challenge :earth_americas:

MIT License

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Closed jakubczakon closed 6 years ago

jakubczakon commented 6 years ago

Using random rotation in augmentation may cause trouble because:

if pictures are taken at the same time of the day (presumable of the short period of the year) shadow will be more or less the same
orientation of buildings/roads may be more or less the same throughout the dataset

Actions:

go through train/valid/test examples and check if constant angle hypothesis is correct
drop rotation from augmentations or use only a very small rotation