Augmented reality application based indoor three-dimensional positioning method

The invention discloses an augmented reality application based indoor three-dimensional positioning method. The augmented reality application based indoor three-dimensional positioning method comprises the steps of: positioning coordinates of a camera lens and a target node in real time, and determining an observation angle of the camera lens; converting three-dimensional coordinates of the targetnode into three-dimensional space coordinates with the camera lens as a reference, and converting the three-dimensional coordinates into two-dimensional coordinates in a two-dimensional image taken by the camera lens through the camera imaging principle and the camera calibration technology; and obtaining mapping coordinates of the three-dimensional coordinates in the two-dimensional image, and then superimposing a virtual image or a 3D model to the two-dimensional image taken by the camera lens. The invention can realize that a user can obtain the information of a real item by the augmentedreality effect by using a