US 12,449,310 B2
Method and apparatus for detecting fire spots, electronic device, and storage medium
Fei Shi, Zhejiang (CN); and Longhua Mao, Zhejiang (CN)
Assigned to ZHEJIANG UNIVIEW TECHNOLOGIES CO., LTD., Hangzhou (CN)
Appl. No. 18/259,927
Filed by ZHEJIANG UNIVIEW TECHNOLOGIES CO., LTD., Zhejiang (CN)
PCT Filed Dec. 8, 2021, PCT No. PCT/CN2021/136265
§ 371(c)(1), (2) Date Jun. 29, 2023,
PCT Pub. No. WO2022/143052, PCT Pub. Date Jul. 7, 2022.
Claims priority of application No. 202011587808.6 (CN), filed on Dec. 29, 2020.
Prior Publication US 2024/0060822 A1, Feb. 22, 2024
Int. Cl. G01J 5/00 (2022.01); G01J 5/08 (2022.01); G06V 10/12 (2022.01); G06V 20/52 (2022.01); H04N 23/23 (2023.01); H04N 23/67 (2023.01); H04N 23/695 (2023.01)
CPC G01J 5/0066 (2013.01) [G01J 5/0859 (2013.01); G06V 10/12 (2022.01); G06V 20/52 (2022.01); H04N 23/23 (2023.01); H04N 23/675 (2023.01); H04N 23/695 (2023.01); G01J 2005/0077 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for detecting fire spots, comprising:
acquiring a to-be-detected image collected by an image collection device based on a focus lens group at a target position; wherein the target position of the focus lens group is determined according to a minimum object distance and a maximum object distance in the to-be-detected image;
moving, according to a preset moving rule, a fire spot detection template in the to-be-detected image, and using a range covered by the fire spot detection template as a detection region; and
determining, according to a pixel value in the detection region, whether the detection region is a fire spot region;
wherein before determining, according to the pixel value in the detection region, whether the detection region is the fire spot region, the method further comprises:
acquiring a simulated image collected by the image collection device for a simulated fire spot based on the focus lens group at a simulated position, and determining a pixel value of a simulated fire spot region in which the simulated fire spot in the simulated image is located; wherein the simulated position of the focus lens group is determined according to an object distance between the simulated fire spot and the image collection device;
determining a pixel value of a non-simulated fire spot region in the simulated image; and
determining, according to the pixel value of the simulated fire spot region and the pixel value of the non-simulated fire spot region, a first fire spot detection threshold and a second fire spot detection threshold; wherein the pixel value of the simulated fire spot region is greater than the first fire spot detection threshold, the first fire spot detection threshold is greater than the second fire spot detection threshold, and the second fire spot detection threshold is greater than the pixel value of the non-simulated fire spot region.