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Title:
CORRELATION OPERATION-BASED PERSPECTIVE IMAGE ADAPTIVE CORRECTION ALGORITHM
Document Type and Number:
WIPO Patent Application WO/2022/105000
Kind Code:
A1
Abstract:
A correlation operation-based perspective image adaptive correction method, which relates to the technical fields of computer vision, image processing, and signal processing, and which comprises the following steps: combined with image processing technology, performing template matching by using a cross-correlation operation of signal processing; calculating an autocorrelation matrix of periodic noises; performing sampling synchronization on a noise block; performing a cross-ratio check on peaks in the autocorrelation matrix of the periodic noises; and performing a final template matching perspective correction. Compared with conventional algorithms, the correlation operation-based perspective image adaptive correction algorithm used in said method has the advantages of higher precision, less computation, and full automation without human involvement, and can be applied on a large scale in computer vision inspection scenarios in various industries.

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Inventors:
HE YANG (CN)
Application Number:
PCT/CN2020/138158
Publication Date:
May 27, 2022
Filing Date:
December 22, 2020
Export Citation:
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Assignee:
SHENZHEN QYCLOUD TECH CORP LTD (CN)
HE YANG (CN)
International Classes:
G06T5/00; G06K9/62
Foreign References:
CN105469428A2016-04-06
CN108564557A2018-09-21
US20030026482A12003-02-06
Other References:
YANG MIN, SHEN CHUN-LIN: "Geometric Perspective Rectification and Template Matching by Normalized Cross-Correlation on Image Registration", AVIONICS TECHNOLOGY, vol. 34, no. 2, 26 June 2003 (2003-06-26), pages 38 - 41, XP055931668, ISSN: 1006-141X
Attorney, Agent or Firm:
SHENZHEN LANFENG SHENGSHI INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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