2results about How to "Heavy computation" patented technology

This invention discloses a light projector and a sensing system used in conjunction with the light projector. The light projector includes a light source and a diffraction optical element. The light source has a first light-emitting area and a second light-emitting area, and the diffraction optical element is disposed on the light source. The diffraction optical element has a first diffraction structure and a second diffraction structure, which overlap the first light-emitting area and the second light-emitting area, respectively. The first diffraction structure is different from the second diffraction structure.

The application discloses a satellite orbit ECI anchoring rendering method based on osgEarth and relates to the technical field of three-dimensional geographic information system visualization.The method comprises the following steps: storing orbit geometry in the ECI coordinate system statically, performing GMST rotation rendering through a MatrixTransform node every frame;monitoring the satellite position deviation, correcting the error through a double-path mechanism of anchor point translation and asynchronous resampling; supporting double-mode orbit display, coordinating the main thread and the background thread by using an asynchronous request identification matching filter mechanism; realizing earth occlusion culling by judging the intersection between the line of sight and the earth sphere in the GPU pixel shader; and driving the satellite propagation and the ground entity kinematics model by using a unified simulation time axis.The application solves the problems of orbit line drift, high-orbit penetration artifacts and time-space reference inconsistency, and realizes efficient, accurate and drift-free rendering and sky-ground collaborative display in a large-scale satellite scene.