Method and apparatus for correcting distortion on holographic display
AssigneeElectronics and Telecommunications Research Institute
InventorsMin Sik Park, Hyun Eui Kim
Life of this patent
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Abstract
A method and apparatus for correcting a distortion of a holographic display. The method includes tracking a location of a viewing window by tracking a location of a pupil of a user and calculating a central location of the viewing window, generating a wavefront aberration by determining an object point and an image point based on a location of a light source and the central location of the viewing window and using ray tracing, and calculating a complex aberration light field using the generated wavefront aberration. Thus, a quality of a holographically reproduced image in a viewing window-based holographic display may be improved.
Claims18
A method of correcting a distortion of a holographic display to be performed by an apparatus for correcting a distortion of a holographic display, the method comprising:
- tracking a location of a viewing window by calculating a central location of the viewing window based on a location of a pupil of a user;
- generating a wavefront aberration by determining an object point and an image point based on a location of a light source and the central location of the viewing window, and using ray tracing;
- and
- correcting a distortion of a holographic display using the generated wavefront aberration,
- wherein the generating of the wavefront aberration comprises:
- generating the wavefront aberration in an exit pupil using ray tracing of an optical system of the holographic display;
- and
- generating the wavefront aberration of coordinates of the exit pupil by calculating a first optical path spanning from an image point on an image plane to the exit pupil and a second optical path spanning from a reference spherical wavefront of the exit pupil to the central location of the viewing window.
A method of correcting a distortion of a holographic display to be performed by an apparatus for correcting a distortion of a holographic display, the method comprising:
- tracking a location of a viewing window by calculating a central location of the viewing window based on a location of a pupil of a user;
- generating a wavefront aberration by determining an object point and an image point based on a location of a light source and the central location of the viewing window, and using ray tracing;
- and
- correcting a distortion of a holographic display using the generated wavefront aberration,
- wherein the correcting of the distortion comprises:
- correcting the distortion of the holographic display by calculating a complex aberration light field by applying an aberration light field in which the wavefront aberration is a negative value.
An apparatus for correcting a distortion of a holographic display, the apparatus comprising:
- a processor;
- and
- a memory having instructions stored thereon executed by the processor to perform;
- tracking a location of a viewing window by calculating a central location of the viewing window based on a location of a pupil of a user;
- generating a wavefront aberration by determining an object point and an image point based on a location of a light source and the central location of the viewing window, and using ray tracing;
- and
- correcting a distortion of a holographic display by calculating a complex aberration light field using the generated wavefront aberration,
- wherein the wavefront aberration in an exit pupil is generated by using ray tracing of an optical system of the holographic display, and
- wherein the wavefront aberration of coordinates of the exit pupil is generated by calculating a first optical path spanning from an image point on an image plane to the exit pupil and a second optical path spanning from a reference spherical wavefront of the exit pupil to the central location of the viewing window.
Dependencies are inferred from the claim text.