2 results about "Be star" patented technology

The application provides a disc area structure level determination method and device and electronic equipment. A first area containing a disc area is scanned line by line to obtain OCT volume data. A center point of the first area is taken as a center to star-type sample the OCT volume data to obtain a first number of first BScan two-dimensional section image data. An initial center point of the disc area is determined, and the OCT volume data is star-type sampled with the initial center point as the center to obtain a second number of second BScan two-dimensional section image data. The structure level of the disc area is determined. The OCT volume data is obtained in a line-by-line scanning manner, which ensures a high sampling rate. The sampled data is uniform and continuous. Star-type sampling is performed on the continuous data, which can avoid jumping and errors. In addition, the initial center point of the disc area is determined through star-type sampling, and then star-type sampling is performed with the initial center point as the center, which can obtain a more accurate disc area structure level.

The present application provides a kind of geostationary orbit plane array camera on-orbit star extraction method and system, comprising: according to the principle of stationary orbit satellite plane array imaging, cold air is star area in the periphery of earth disc chart, and star image slides through camera field of view according to the direction from west to east;According to the basic data of star library, combined with satellite orbit, attitude data and imaging condition, the time of star appearing in field of view and the corresponding angle of camera two-dimensional scanning mechanism can be calculated;In actual star observation process, camera two-dimensional scanning mechanism is pointed to the predetermined position in advance according to the corresponding angle of predetermined observation star, and waits for star to appear;After star enters field of view, try to keep star in field of view range, star moves stably in plane array camera field of view, and continuously adjusts two-dimensional scanning mechanism angle along with the motion track of star, to keep continuous observation to star whole track process.