Reusing pixel-accurate graphics rasterization in multiscopic displays

A system comprising:

• a tracker;
• a multiscopic display comprising:
• an array of light-emitting elements;
• and
• a multiscopic optical element arranged on an optical path of the array of light-emitting elements, the multiscopic optical element comprising a plurality of multiscopic cells;
• and
• at least one processor configured to:
• determine a relative location of each eye of at least one user with respect to an image plane of the multiscopic display, using the tracker;
• determine a three-dimensional view frustum corresponding to a given eye of the at least one user, based on a relative location of the given eye with respect to the image plane;
• identify a set of light-emitting elements in the array to be employed to display a graphical element to the given eye, based on a position of the graphical element in the 3D view frustum;
• determine, for each light-emitting element in the set, a perceived shape and a perceived angular size of said light-emitting element from a perspective of the given eye, based on the relative location of the given eye with respect to the image plane, and on optical distortion parameters of the multiscopic optical element;
• rasterize the graphical element onto the set of light-emitting elements based at least on relative perceived positions of the light-emitting elements in the set from the perspective of the given eye, and the perceived shape and the perceived angular size of each light-emitting element in the set;
• compute a colour value for each light-emitting element in the set based on the rasterization of the graphical element;
• store, for the graphical element, computed colour values for the light-emitting elements in the set, along with cadence information indicating a reference cadence of a reference light-emitting element in the set with respect to a multiscopic cell;
• update the 3D view frustum corresponding to the given eye, based on a current or predicted relative location of the given eye with respect to the image plane;
• identify another set of light-emitting elements in the array to be employed to display the graphical element to the given eye, based on the position of the graphical element in the updated 3D view frustum;
• determine whether a cadence of a corresponding light-emitting element in the another set with respect to another multiscopic cell matches the reference cadence of the reference light-emitting element in the set within a predefined similarity threshold;
• and
• when it is determined that the cadence of the corresponding light-emitting element in the another set matches the reference cadence within the predefined similarity threshold, reuse the stored colour values for the light-emitting elements of the another set to display the graphical element to the given eye.