US 11,747,767 B2
Method and apparatus for processing three-dimensional holographic image
Hoon Song, Yongin-si (KR); Hwi Kim, Sejong-si (KR); Jongha Park, Sejong-si (KR); Hojung Kim, Suwon-si (KR); and Yongkyu Kim, Hwaseong-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR); and Korea University Research and Business Foundation, Sejong Campus, Sejong-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR); and Korea University Research and Business Foundation, Sejong Campus, Sejong-si (KR)
Filed on Feb. 3, 2020, as Appl. No. 16/780,402.
Claims priority of application No. 10-2019-0031465 (KR), filed on Mar. 19, 2019; and application No. 10-2019-0094536 (KR), filed on Aug. 2, 2019.
Prior Publication US 2020/0301361 A1, Sep. 24, 2020
Int. Cl. G03H 1/08 (2006.01); G03H 1/00 (2006.01)
CPC G03H 1/0891 (2013.01) [G03H 2001/0088 (2013.01); G03H 2001/0825 (2013.01); G03H 2210/30 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A method of processing a three-dimensional holographic image, the method comprising:
obtaining a plurality of depth images for a predetermined number of depth layers from depth data of a three-dimensional object, each depth image from among the plurality of depth images having a predetermined resolution and corresponding to a respective depth layer from among the predetermined number of depth layers;
dividing each depth image from among the plurality of depth images into a predetermined number of sub-images to be processed by respective processing units from among a plurality of processing units;
obtaining a plurality of interference patterns of a plurality of computer-generated hologram (CGH) patches in a CGH plane, each CGH patch from among the plurality of CGH patches corresponding to at least one respective sub-image from among the predetermined number of sub-images, by performing a Fourier transform on object data included in the respective sub-image to calculate an interference pattern in the CGH plane corresponding to the respective sub-image; and
generating a CGH of the three-dimensional object using the obtained plurality of interference patterns,
wherein the obtaining the plurality of interference patterns comprises:
determining, with respect to each depth image from among the plurality of depth images, a sub-image from among the predetermined number of sub-images in which the object data is present, as a region of interest (ROI); and
obtaining the plurality of interference patterns by performing the Fourier transform on the determined sub-image and refraining from performing the Fourier transform on remaining sub-images from among the predetermined number of sub-images, and
wherein the CGH of the three-dimensional object is generated based on the sub-image corresponding to the ROI, without being based on another sub-image from among the predetermined number of sub-images that does not correspond to the ROI.