Invention Grant
- Patent Title: Multispectral camera dynamic stereo calibration algorithm based on saliency features
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Application No.: US17284394Application Date: 2020-03-05
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Publication No.: US11783457B2Publication Date: 2023-10-10
- Inventor: Wei Zhong , Haojie Li , Boqian Liu , Zhihui Wang , Risheng Liu , Zhongxuan Luo , Xin Fan
- Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
- Applicant Address: CN Liaoning
- Assignee: DALIAN UNIVERSITY OF TECHNOLOGY
- Current Assignee: DALIAN UNIVERSITY OF TECHNOLOGY
- Current Assignee Address: CN Liaoning
- Agency: Muncy, Geissler, Olds & Lowe, P.C.
- Priority: CN 1911154076.9 2019.11.22
- International Application: PCT/CN2020/077976 2020.03.05
- International Announcement: WO2021/098083A 2021.05.27
- Date entered country: 2021-04-09
- Main IPC: G06T5/00
- IPC: G06T5/00 ; G06T7/80 ; G06T7/73 ; G06T5/40 ; G06T5/50

Abstract:
A multispectral camera dynamic stereo calibration algorithm is based on saliency features. The joint self-calibration method comprises the following steps: step 1: conducting de-distortion and binocular correction on an original image according to internal parameters and original external parameters of an infrared camera and a visible light camera. Step 2: Detecting the saliency of the infrared image and the visible light image respectively based on a histogram contrast method. Step 3: Extracting feature points on the infrared image and the visible light image. Step 4: Matching the feature points extracted in the previous step. Step 5: judging a feature point coverage area. Step 6: correcting the calibration result. The present invention solves the change of a positional relationship between an infrared camera and a visible light camera due to factors such as temperature, humidity and vibration.
Public/Granted literature
- US20220028043A1 MULTISPECTRAL CAMERA DYNAMIC STEREO CALIBRATION ALGORITHM BASED ON SALIENCY FEATURES Public/Granted day:2022-01-27
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