Manifold-based coal seam three-dimensional reconstruction method

The invention provides a manifold-based coal seam three-dimensional reconstruction method, which belongs to the technical field of coal mining, and comprises the following steps of: establishing a complete dictionary of a map to be optimized and a high-precision map, inputting a map set into a sparse coding module to obtain a complete dictionary of the high-precision map and a complete dictionary of the map to be optimized, a high-precision map is obtained through a map reconstruction module, a plurality of reconstructed high-precision small blocks are obtained, redundant features are searched from the map to be reconstructed through a neighbor search module, high-precision map small blocks are obtained, and the obtained small blocks are combined through a high-precision map restoration module. Finally, a reconstructed high-precision map is formed, the complete dictionary is continuously updated through the iteration updating module, existing data in a current coal mine database are used in the reconstruction