Systems and methods for holographic projection

A holographic system comprising:

• a display device;
• one or more processors;
• and
• one or more tangible, non-transitory computer-readable media having program instructions stored therein, wherein the program instructions, when executed by the one or more processors, cause the holographic system to:
• determine a plurality of secondary images from a primary image, each secondary image formed by sampling pixel values of the primary image at a regular array of sampling positions, wherein a first secondary image is formed using a regular array of first sampling positions and a second secondary image is formed using a regular array of second sampling positions, wherein the second sampling positions are interposed between the first sampling positions in a first direction of the array;
• determine a hologram of each secondary image;
• cause display of each hologram in rapid succession on the display device comprising a pixel array for a first time so as to reconstruct each secondary image from the respective hologram such that a first array of image pixels, substantially corresponding to the primary image, is perceivable, wherein image pixels of the reconstruction of the second secondary image are interposed between image pixels of the reconstruction of the first secondary image in the first direction;
• cause display of each hologram in rapid succession on the display device for a second time, wherein the second time is immediately after the first time, so as to reconstruct each secondary image from the respective hologram such that a second array of image pixels is perceivable, wherein the second array of image pixels is translated in a second direction relative to the first array of images pixels;
• and
• wherein an aperture of the display device is longer in the second direction than the first direction, wherein the second direction is orthogonal to the first direction, and wherein the image pixels formed to reconstruct each secondary image are more elongate and closely-packed in the first direction than the second direction.

A tangible, non-transitory computer-readable media comprising program instructions stored therein, wherein the program instructions, when executed by one or more processors, cause a holographic system to perform functions comprising:

• determining a plurality of secondary images from a primary image, each secondary image formed by sampling pixel values of the primary image at a regular array of sampling positions, wherein a first secondary image is formed using a regular array of first sampling positions and a second secondary image is formed using a regular array of second sampling positions, wherein the second sampling positions are interposed between the first sampling positions in a first direction;
• determining a hologram of each secondary image;
• causing a display device to display each hologram in rapid succession so as to reconstruct each secondary image from the respective hologram such that a first array of image pixels, substantially corresponding to the primary image, is perceivable, wherein image pixels of the reconstruction of the second secondary image are interposed between image pixels of the reconstruction of the first secondary image in the first direction;
• wherein an aperture of the display device is orientated such that it is longer in a second direction than the first direction, wherein the second direction is orthogonal to the first direction, and wherein the image pixels formed to reconstruct each secondary image are more elongate and closely-packed in the first direction than the second direction;
• and
• wherein causing a display device to display each hologram in rapid succession comprises comprising the display device to display each hologram for a second time in rapid succession with a first time so as to reconstruct each secondary image from the respective hologram such that a second array of the image pixels is perceivable.