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A method for constructing imaging model of multi-layer refraction system based on light field model

A technology of imaging model and construction method, applied in the field of computer vision, to achieve the effect of intuitive and high-precision light propagation process

Active Publication Date: 2021-02-26
HUST WUXI RES INST
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems mentioned in the above background technology section by a method for constructing an imaging model of a multi-layer refraction system based on a light field model

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  • A method for constructing imaging model of multi-layer refraction system based on light field model
  • A method for constructing imaging model of multi-layer refraction system based on light field model
  • A method for constructing imaging model of multi-layer refraction system based on light field model

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[0035] The present invention will be further described below in conjunction with drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some parts related to the present invention are shown in the accompanying drawings but not the whole content. Unless otherwise defined, all technical and scientific terms used herein are related to the technical field of the present invention. The skilled person generally understands the same meaning. The terms used herein are for describing specific embodiments only, and are not intended to limit the present invention.

[0036] The following first explains the related knowledge of the light field. The propagation of light in space can use the four-dimensional light field function (u vs t) T express. Such as figure 1 As shown, the first...

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Abstract

The invention discloses a method for constructing an imaging model of a multilayer refraction system based on a light field model, comprising the following steps: S101, constructing a coordinate system system of a multilayer refraction model: constructing a camera coordinate system o c x c the y c z c , Refractive system imaging coordinate system o r x r the y r z r and the world coordinate system o w x w the y w z w ; S102, construct the light field vector according to the coordinates of the image points, and calculate the light field vector of each medium layer according to the refraction parameters of the refraction system and the propagation and refraction equation of the light field; S103, according to the calculated light field of each medium layer Vector construction of the imaging model of the multilayer refraction system. The present invention is based on a multi-layer refraction model and a light field model. The light field model includes not only the position information of the light but also the direction information, and provides the expressions of light path propagation and refraction based on the light field model, which can be used for underwater camera imaging description and Imaging description of all cameras equipped with protective glass or filters.

Description

technical field [0001] The invention relates to the field of computer vision, in particular to a method for constructing an imaging model of a multilayer refraction system based on a light field model. Background technique [0002] In the underwater environment, the imaging light will pass through the three layers of refraction media: water, filter, and air. Existing methods often apply the traditional camera model to this refraction system, and use radial distortion coefficients to correct the deviation caused by refraction. However, the effect of refraction on the deviation of different pixels is different, and the use of traditional camera models will produce obvious errors. Contents of the invention [0003] The purpose of the present invention is to solve the problems mentioned above in the background technology section through a method for constructing an imaging model of a multi-layer refraction system based on a light field model. [0004] For reaching this purpo...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/73G02B27/00
CPCG02B27/0012G06T7/75
Inventor 张旭朱禹轲朱利民
Owner HUST WUXI RES INST
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