Three-dimensional modeling method and device

The embodiment of the invention provides a three-dimensional modeling method and device. The method comprises the steps that a terminal moves according to a specific mode, and displacement information of the terminal is measured; the terminal moves according to the specific mode under driving of external force, and is matched with another terminal to finish modeling; a picture of a photographed object is photographed; outline information of the photographed object is extracted; two vision cones are generated according to the displacement information and the outline information, and intersected to obtain a three-dimensional model of the photographed object. According to the provided scheme, the double mobile terminals are used for photographing the photographed object, a site photographing procedure and a later-stage processing procedure are combined into one, in comparison with a method of needing to manufacture a scale plate at first for calibrating pictures in the photographing process and then carrying out later-stage processing in the prior art, the characteristics of photographing and moving measurement of the mobile terminals are utilized, integration of data collecting and processing is achieved, and the modeling procedure is simpler.