US 11,721,004 B2
Thermal camera and method of processing thermal image thereof
Jin Wook Huh, Seongnam-si (KR); and Ki Rim Lee, Seongnam-si (KR)
Assigned to Hanwha Techwin Co., Ltd., Seongnam-si (KR)
Filed by HANWHA TECHWIN CO., LTD., Seongnam-si (KR)
Filed on Oct. 7, 2021, as Appl. No. 17/495,975.
Prior Publication US 2022/0358628 A1, Nov. 10, 2022
Int. Cl. G06T 5/40 (2006.01); H04N 23/741 (2023.01); G06T 5/00 (2006.01)
CPC G06T 5/40 (2013.01) [G06T 5/009 (2013.01); H04N 23/741 (2023.01); G06T 2207/10048 (2013.01); G06T 2207/30232 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A thermal image processing method comprising:
determining a blending ratio of a first equalization algorithm to a second equalization algorithm that are different from each other, based on a result of analyzing an original histogram of an original thermal image;
generating a first corrected thermal image obtained by applying the first equalization algorithm and the second equalization algorithm to the original thermal image according to the blending ratio;
adjusting the blending ratio by comparing a corrected histogram of the first corrected thermal image with the original histogram; and
generating a second corrected thermal image obtained by applying the first equalization algorithm and the second equalization algorithm to the original thermal image according to the adjusted blending ratio.