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A deep learning-based evaluation system for child-friendly urban streets integrating abstract and concrete features—A case of Shanghai Urban Street

Fig 2

Schematic distribution map of urban street research samples in Shanghai urban area.

Image source: self-drawn by the author. This diagram is for illustrative purposes only and may differ from the original image.

doi: https://doi.org/10.1371/journal.pone.0342430.g002