US 11,836,948 B2
Image calibration method and image calibration device
Chung-Yi Kao, New Taipei (TW); and Shih-Hsuan Chen, New Taipei (TW)
Assigned to VIVOTEK INC., New Taipei (TW)
Filed by VIVOTEK INC., New Taipei (TW)
Filed on Apr. 13, 2021, as Appl. No. 17/228,734.
Claims priority of application No. 109113997 (TW), filed on Apr. 27, 2020.
Prior Publication US 2021/0335009 A1, Oct. 28, 2021
Int. Cl. G06T 7/80 (2017.01); G06T 7/00 (2017.01); G06T 5/50 (2006.01); G06T 7/90 (2017.01)
CPC G06T 7/80 (2017.01) [G06T 5/50 (2013.01); G06T 7/90 (2017.01); G06T 7/97 (2017.01); G06T 2207/10024 (2013.01); G06T 2207/20221 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An image calibration method, comprising:
comparing a first image with a second image to acquire a first overlapping region of the first image and a second overlapping region of the second image, wherein the first overlapping region is overlapped with the second overlapping region;
analyzing color distribution of the first overlapping region to acquire at least one first base color value;
analyzing color distribution of the second overlapping region to acquire at least one second base color value; and
setting a ratio of the at least one first base color value to the at least one second base color value as a luminance compensation value used for adjusting pixels of the second image without adjustment of the first image when the at least one first base color value is greater than the at least one second base color value.