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A method and system for processing internal parameters of a camera based on a single photo

A camera and photo technology, applied in image data processing, image analysis, image enhancement, etc., can solve the problem that a single photo cannot obtain the world coordinates of space points

Active Publication Date: 2022-07-26
湖南泽塔科技有限公司
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Problems solved by technology

[0006] The embodiment of the present application provides a camera internal parameter processing method and system based on a single photo, to at least solve the problem in the prior art that a single photo only has measurement information of a spatial point and cannot obtain the world coordinates of a spatial point but needs to calculate internal parameters. question

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  • A method and system for processing internal parameters of a camera based on a single photo
  • A method and system for processing internal parameters of a camera based on a single photo
  • A method and system for processing internal parameters of a camera based on a single photo

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[0025] It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0026] It should be noted that the steps shown in the flowcharts of the accompanying drawings may be executed in a computer system, such as a set of computer-executable instructions, and, although a logical sequence is shown in the flowcharts, in some cases, Steps shown or described may be performed in an order different from that herein.

[0027]This embodiment provides the design of a camera calibration template and invents a new matching camera calibration method. In the case that the focal length of the camera may change continuously and unknown, there is no good method to determine the five internal parameters of the camera based on a single photo when there is ...

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Abstract

The present application discloses a camera internal reference processing method and system based on a single photo. The method includes: acquiring a calibration image; identifying at least one concentric circle on each of three planes in the calibration image to obtain two-dimensional image coordinates; Select three straight lines outward from the center of a concentric circle of each of the three planes in , establish an equation for each intersection of the line passing through the center of the circle and the two points of the outer ring, and establish three equations for the three lines in each concentric circle; solve the nine equations corresponding to the three concentric circles to get the camera internal parameters. The present application solves the problem that a single photo only has the metric information of the spatial point and cannot obtain the world coordinates of the spatial point but needs to calculate the internal parameters, thereby improving the flexibility and accuracy of calibration.

Description

technical field [0001] The present application relates to the technical field of camera calibration, and in particular, to a method and system for processing internal parameters of a camera based on a single photo. Background technique [0002] In computer vision, 3D reconstruction from 2D images requires camera calibration to extract 3D structural information from 2D images. The purpose of camera calibration is to determine the internal and external parameters and distortion coefficients of the camera, thereby laying the foundation for computer vision. The camera calibration method not only needs to solve the internal and external parameters and distortion coefficients of the camera very accurately, but also meets the actual needs of various application scenarios. Regarding camera calibration, it is not only used in 3D reconstruction, but also has many applications in various scenarios, such as robot navigation, industrial control, and medical diagnosis. Various applicatio...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/80G06T7/73G06T7/90
CPCG06T7/80G06T7/75G06T7/90G06T2207/30244
Inventor 韩梦思何军
Owner 湖南泽塔科技有限公司
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