Monocular Multi-image Scene Restoration

The stereo vision method introduced in the first two chapters restores the depth of the scene according to two or more images obtained by the cameras in different positions. Here, the depth information (distance information) can be regarded as the redundant information from multiple images. Acquiring multiple images with redundant information can also be achieved by collecting images of light change and/or scene change at the same location. These images can be obtained with only one (fixed) camera, so they can also be collectively referred to as monocular methods (stereo vision methods are all based on multiple cameras and multiple images. Although one camera can be used to shoot in multiple positions, it is still equivalent to multiple cameras due to different angles of view). From the (monocular) multiple images obtained in this way, the surface orientation of the scene can be determined, and the relative depth between the parts of the scene can be directly obtained from the surface orientation of the scene. In practice, it is often possible to further calculate the absolute depth of the scene [1].