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A Parameter Estimation Method of Light Field Camera Based on Polycentric Projection Model

A light field camera and parameter estimation technology, which is applied in computing, image data processing, image analysis, etc., can solve problems such as restricting the movement of light field cameras, and achieve the effect of great flexibility

Active Publication Date: 2022-05-03
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

However, this method requires light overlap between different light fields, which restricts the movement of the light field camera

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  • A Parameter Estimation Method of Light Field Camera Based on Polycentric Projection Model
  • A Parameter Estimation Method of Light Field Camera Based on Polycentric Projection Model
  • A Parameter Estimation Method of Light Field Camera Based on Polycentric Projection Model

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, and the present invention includes but not limited to the following embodiments.

[0027] The invention proposes a method for estimating and registering parameters of a light field camera that does not depend on a special calibration object, and calculates the internal parameters and external parameters of the light field camera according to the scene. The main links include: multi-center projection model of light field camera under biplane coordinates, linear constraints between 3D points and light field recording rays, linear solution of internal and external parameters of light field camera, establishment of distortion model and cost function in nonlinear optimization. Said method comprises the following steps:

[0028] S1. Multi-view optical field correlation matrix

[0029] Establish the relative coordinate parameterization of the double parallel pl...

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Abstract

The present invention provides a light field camera parameter estimation method based on a multi-center projection model, and calculates the internal parameters and external parameters of the light field camera according to the scene. Linear constraints between points and light field recording rays, linear solution of internal and external parameters of light field cameras, establishment of distortion model and cost function in nonlinear optimization. The present invention proposes a method for estimating light field camera parameters by introducing a multi-view light field correlation matrix to achieve similar reconstruction of scenes, avoiding the cumbersome task of estimating light field camera parameters with special calibration objects, thus having great flexibility and usefulness It helps to simplify the process of light field camera parameter estimation and multi-view light field scene reconstruction under the premise of ensuring accuracy and stability.

Description

technical field [0001] The invention belongs to a method for estimating a parameter of a light field camera, relates to the fields of computer vision, computational photography and optical engineering, and in particular to a method for estimating a parameter of a light field camera. Background technique [0002] The rise of light field imaging theory is an important innovation in the field of computer photography, which breaks through the limitations of traditional imaging techniques. Light field cameras reduce the loss of shooting information by recording the position and angle information of light in space, and achieve novel imaging effects such as variable viewpoint, digital refocusing, extended and adjustable depth of field. However, the existing light field imaging equipment has defects such as small field of view, insufficient depth of field, and compromise in spatial and angular resolution, which restrict the development of light field imaging technology to a certain ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/80
CPCG06T7/80G06T2207/10052
Inventor 张琦王庆李亚宁周果清王雪
Owner NORTHWESTERN POLYTECHNICAL UNIV