Green streets − Quantifying and mapping urban trees with street-level imagery and computer vision

•Current methods to map urban trees are hindered by high costs or poor resolution.•Computer vision is used to quantify urban tree cover from street view images.•A multi-step algorithm accurately segments the percent of tree cover in an image.•Modeling the relationship between neighbouring images increases predictive accuracy.•Computer vision can map urban tree cover at high spatial resolution with rapid throughput.