Abstract: Provided is a holographic optical element printing method using a tunable focus lens and a rotating mirror. According to an embodiment, a holographic printer includes: a first optical engine and a second optical engine configured to adjust a phase of an incident collimated beam and emit the collimated beam; and a first reduction optical system and a second reduction optical system configured to reduce the beam emitted from the first optical engine and the second optical engine and to allow the beam to enter a holographic material, wherein each of the first optical engine and the second optical engine includes: a rotating mirror configured to reflect while adjusting the phase of the incident collimated beam through rotation; and a tunable focus lens configured to refract while adjusting the phase of the incident collimated beam reflected from the rotating mirror through focus tuning.

Abstract: Provided is a cognitive experiment method for change in periphery region image quality for parameter determination of a foveated hologram. According to an embodiment, a cognitive experiment method for determining foveated image parameters includes: generating a foveated image which includes a foveal region and a periphery region while reducing image quality regarding the periphery region; displaying the generated foveated image; receiving an input of a response to image quality of the periphery region from a subject; and collecting information regarding appropriate image quality of the periphery region, based on the response inputted by the subject. Accordingly, in applying a foveated hologram generation algorithm for real-time reproduction, various parameters such as a boundary between a foveal region image and a periphery region image in a foveated hologram, and a degree of quality degradation of the periphery region image may be appropriately determined through a cognitive experiment.

Abstract: Provided is a hologram image normalization method for a holographic printer. In a holographic printing method according to an embodiment, generating, encoding, and normalizing for the (n+1)-th hogel are performed in parallel with loading and recording of a normalized hologram for the n-th hogel, and moving and waiting for the (n+1)-th hogel. Accordingly, a global maximum value and a global minimum value for normalization may be calculated as approximate estimation values, and a hologram generation process and a printing process may be performed in parallel, so that a total printing time may be minimized and memory usage may be optimized when holographic printing is performed.

Abstract: Disclosed are an electronic device and method for controlling objects displayed through the electronic device. A method includes displaying a stereoscopic screen including a left-eye screen and a right-eye screen through a display of the electronic device, moving a pointer object in the stereoscopic screen, based on a movement of the electronic device sensed by a sensor of the electronic device, identifying whether the pointer object is positioned at a first position for a predetermined time in the stereoscopic screen, based on information obtained from the sensor, and based on identifying that the pointer object is positioned at the first position for the predetermined time, moving at least one object included in the stereoscopic screen into the first position at which the pointer object is positioned.

Abstract: Disclosed are an electronic device and method for controlling objects displayed through the electronic device. A method includes displaying a stereoscopic screen including a left-eye screen and a right-eye screen through a display of the electronic device, moving a pointer object in the stereoscopic screen, based on a movement of the electronic device sensed by a sensor of the electronic device, identifying whether the pointer object is positioned at a first position for a predetermined time in the stereoscopic screen, based on information obtained from the sensor, and based on identifying that the pointer object is positioned at the first position for the predetermined time, moving at least one object included in the stereoscopic screen into the first position at which the pointer object is positioned.

Abstract: Disclosed are an electronic device and method for controlling objects displayed through the electronic device. The method includes sensing a movement of the electronic device, outputting a stereoscopic image on a display of the electronic device, moving a first object from a first position to a second position corresponding to the sensed movement in the stereoscopic image, and moving one of the first object and a second object into a position of the other object.

Abstract: An electronic device and its operating method according to various embodiments, may be configured to provide first content received from an external electronic device to a user waring the electronic device on his/her face using a display of the electronic device, identify a movement of an external object in a visible direction of the user see-through or using the display which provides the first content, and provide second content to the user through at least part of the display so as to display the second content related to the first content in relation to the external object according to the movement.

Abstract: Disclosed are an electronic device and method for controlling objects displayed through the electronic device. The method includes sensing a movement of the electronic device, outputting a stereoscopic image on a display of the electronic device, moving a first object from a first position to a second position corresponding to the sensed movement in the stereoscopic image, and moving one of the first object and a second object into a position of the other object.

Abstract: An electronic device and its operating method according to various embodiments, may be configured to provide first content received from an external electronic device to a user waring the electronic device on his/her face using a display of the electronic device, identify a movement of an external object in a visible direction of the user see-through or using the display which provides the first content, and provide second content to the user through at least part of the display so as to display the second content related to the first content in relation to the external object according to the movement.

Abstract: Disclosed are an electronic device and method for controlling objects displayed through the electronic device. The method includes sensing a movement of the electronic device, outputting a stereoscopic image on a display of the electronic device, moving a first object from a first position to a second position corresponding to the sensed movement in the stereoscopic image, and moving one of the first object and a second object into a position of the other object.

Abstract: Disclosed are an electronic device and method for controlling objects displayed through the electronic device. The method includes sensing a movement of the electronic device, outputting a stereoscopic image on a display of the electronic device, moving a first object from a first position to a second position corresponding to the sensed movement in the stereoscopic image, and moving one of the first object and a second object into a position of the other object.