US 12,341,940 B2
System and method for measuring depth of stereoscopic image
Ha Young Lee, Yongin-si (KR); Sung Wook Min, Seoul (KR); Young Rok Kim, Hwaseong-si (KR); Jae Joong Kwon, Yongin-si (KR); and Jin Seo, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR); and UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY, Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR); and UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY, Yongin-si (KR)
Filed on Jul. 25, 2023, as Appl. No. 18/358,532.
Claims priority of application No. 10-2022-0114775 (KR), filed on Sep. 13, 2022.
Prior Publication US 2024/0089420 A1, Mar. 14, 2024
Int. Cl. H04N 13/106 (2018.01); G03H 1/10 (2006.01); H04N 13/00 (2018.01)
CPC H04N 13/106 (2018.05) [G03H 1/10 (2013.01); H04N 2013/0081 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for measuring a depth of a stereoscopic image, comprising:
a display device displaying a stereoscopic image at a predetermined depth of field in a three-dimensional space, wherein the stereoscopic image has a plurality of depths in the three-dimensional space;
a holographic camera generating an interference pattern image by sensing a wavelength and a phase of light of the stereoscopic image; and
a control unit calculating a plurality of modulated image data having image information of the stereoscopic image at each depth of the plurality of depths based on the wavelength and the phase of the light, calculating edges of a field in each of the plurality of modulated image data to obtain edge detection values, calculating a modulated signal by arranging the edge detection values according to a depth in the each of the plurality of modulated image data, calculating a first maximum value of the modulated signal, and calculating a first depth corresponding to the first maximum value as the depth of field.