US 11,689,785 B2
Dual-spectrum image automatic exposure method and apparatus, and dual-spectrum image camera and machine storage medium
Yulin Chen, Zhejiang (CN); and Yue Sun, Zhejiang (CN)
Assigned to ZHEJIANG UNIVIEW TECHNOLOGIES CO., LTD., Zhejiang (CN)
Appl. No. 17/271,407
Filed by ZHEJIANG UNIVIEW TECHNOLOGIES CO., LTD., Zhejiang (CN)
PCT Filed Sep. 14, 2018, PCT No. PCT/CN2018/105802
§ 371(c)(1), (2) Date Feb. 25, 2021,
PCT Pub. No. WO2020/051898, PCT Pub. Date Mar. 19, 2020.
Prior Publication US 2021/0314501 A1, Oct. 7, 2021
Int. Cl. H04N 23/72 (2023.01); H04N 23/12 (2023.01); H04N 23/667 (2023.01); H04N 23/71 (2023.01); H04N 23/11 (2023.01)
CPC H04N 23/11 (2023.01) [H04N 23/12 (2023.01); H04N 23/667 (2023.01); H04N 23/71 (2023.01); H04N 23/72 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A dual-spectrum image automatic exposure method applied to a dual-spectrum image camera, wherein the dual-spectrum image camera comprises one image sensor and a processor that are connected in sequence, wherein the dual-spectrum image camera is further provided with an infrared cutoff filter, and
wherein the method is performed by the processor, and the method comprises:
acquiring an original image collected by the image sensor;
performing logical light splitting processing on the original image to obtain an infrared image and a visible light image;
determining whether to use the infrared cutoff filter currently;
in response to determining to use the infrared cutoff filter, performing exposure processing on the visible light image by using a single-spectrum exposure algorithm to obtain a visible light image that conforms to a target exposure effect; and
in response to determining not to use the infrared cutoff filter, performing the exposure processing on the infrared image and the visible light image by using a dual-spectrum exposure algorithm to obtain a visible light image that conforms to a first exposure effect and an infrared image that conforms to a second exposure effect, wherein the first exposure effect is the same as or different from the target exposure effect.