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Single image camera calibration method based on compressed sensing

A camera calibration and compressed sensing technology, applied in image analysis, image data processing, instruments, etc., can solve the problem that a single image cannot be accurately calibrated, achieve high calibration efficiency and simplify the solution process

Active Publication Date: 2018-01-30
GUANGDONG UNIV OF TECH +1
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Problems solved by technology

[0006] The invention provides a single-image camera calibration method based on compressed sensing, which solves the technical problem that Zhang Zhengyou's plane calibration method cannot accurately calibrate a single image in the prior art

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  • Single image camera calibration method based on compressed sensing
  • Single image camera calibration method based on compressed sensing

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Embodiment Construction

[0024] The embodiment of the present invention will be explained in detail below in conjunction with the accompanying drawings. The examples given are only for the purpose of illustration, and cannot be interpreted as limiting the present invention. The accompanying drawings are only for reference and description, and do not constitute the scope of patent protection of the present invention. limitations, since many changes may be made in the invention without departing from the spirit and scope of the invention.

[0025] see figure 1 , is a flow chart of the steps of a single-image camera calibration method based on compressed sensing provided by an embodiment of the present invention. In this embodiment, the described method for calibrating a single-image camera based on compressed sensing comprises the steps of:

[0026] S1. Transform the mathematical model of Zhang Zhengyou's calibration method to obtain the equivalent vector expression of the solution of the internal refe...

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Abstract

The invention relates to the technical field of camera calibration and in particular discloses a single image camera calibration method based on compressed sensing. The method is just required to photograph a calibration plate once, and solves the optimal solution of a single image by using a compressed sensing reconstruction algorithm by setting qualification conditions for six unknown quantitiesin a underdetermined system of equations of the single image via a Zhang's planar calibration method, thereby greatly simplifying the process of solving the internal matrix and the foreign matrix ofthe single image. The used compressed sensing reconstruction algorithm is subjected to self loop optimization and high camera calibration quality and high calibration efficiency are achieved.

Description

technical field [0001] The invention relates to the technical field of camera calibration, in particular to a single-image camera calibration method based on compressed sensing. Background technique [0002] Camera calibration technology originated from lens correction in photogrammetry in the 19th century, and is mainly used to solve the problem of precise matching between viewpoint coordinates and corresponding image point coordinates. The camera model is composed of parameters that define its matching relationship. Usually these Parameters are divided into external parameters and internal parameters. The two-step calibration method proposed by Tsai in 1987 is considered to be an important theoretical work of camera calibration and has been widely used in the early camera calibration process. Based on the assumed model of collinearity between the radially distorted point and the real point, the method adopts a two-step strategy to solve the internal and external parameter...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/80
Inventor 何浩黄景维黄运保李海艳张沙清张志宏
Owner GUANGDONG UNIV OF TECH
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