Real three-dimensional display system and method based on space layer-by-layer scanning

The invention discloses a real three-dimensional display system and method based on space layer-by-layer scanning, belonging to a virtual reality three-dimensional display technology. The system comprises a master control host, an optical projecting unit, a control unit of the optical projecting unit, a double helix scanning screen and a motion servo unit. The display method comprises the following steps of: three-dimensional rasterization, sliced image rendering and optical projecting display, wherein the step of three-dimensional rasterization is characterized in that an object is dispersedinto a voxel set by adopting regular sampling grids; the step of sliced image rendering is used for determining a subordination relation between the voxels and a scanning screen of a moment; and at the stage of optical projecting display, a three-dimensional space is scanned out by a rotary screen layer by layer, two-dimensional sliced images which are dispersed by a three-dimensional scene are sequentially projected onto