Engineering drawing data extraction method and device

The invention discloses an engineering drawing data extraction method and device, and the method comprises the steps: inputting a target engineering drawing into a target detection model, and generating the position information and first class information of a target object in the target engineering drawing; inputting the target engineering drawing into a region segmentation model, and generating position information and category information of each partition in the target engineering drawing; integrating the position information and the category information of the target object and the key position information and the second category information of each partition to obtain structural data for constructing a three-dimensional model of the target building; according to the method, target object information and partition information in a target engineering drawing are extracted through a target detection model and a region segmentation model respectively, all data needed by three-dimensional model drawing are o