Three-dimensional imaging method and system

A three-dimensional imaging method implemented by using three-dimensional spatial information scanned by a constructed two-dimensional scan probe, comprising following steps:

• S1) acquiring at least two orthogonal two-dimensional images (102) at a current position of a scanning target by a scan probe (107);
• S2) moving the scan probe (107) by a specific distance or rotating the scan probe (107) by a specific angle along a specific spatial direction, and acquiring at least two orthogonal two-dimensional images (103b,103d) or (104b,104d) of the scanning target;
• S3) comparing two groups of the orthogonal two-dimensional images (103b,103d) and (103a,103c) or (104b,1034d) and (104a,104c) of a corresponding direction obtained from steps S1 and S2, and obtaining movement distance information and rotation angle information of the scan probe (107) along the direction;
• S4) repeating steps S1 to S3 until the scanning target is completely scanned;
• S5) by means of the acquired two-dimensional images, as well as the movement distance and the rotation angle of each image group relative to a previous image group, reconstructing a three-dimensional image of the scanning target.