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Method and device for generating automatic calibration camera external parameter model

An automatic calibration and camera technology, applied in neural learning methods, biological neural network models, computer components, etc., can solve the problems of inability to calibrate external parameters of different cameras, and the calibration efficiency is still in question, and achieve the effect of improving the calibration efficiency.

Pending Publication Date: 2022-07-05
ZHIDAO NETWORK TECH (BEIJING) CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the calibration efficiency of the above calibration method is still open to discussion, and it is impossible to efficiently calibrate the external parameters of different cameras

Method used

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  • Method and device for generating automatic calibration camera external parameter model
  • Method and device for generating automatic calibration camera external parameter model
  • Method and device for generating automatic calibration camera external parameter model

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Embodiment Construction

[0057] Embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the scope of this application to those skilled in the art.

[0058]The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that the term "and / or" as used herein refers to and includes any and all possible c...

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Abstract

The invention relates to a method and a device for generating an automatic calibration camera external parameter model. Acquiring a picture uploaded by the camera; generating a first camera extrinsic parameter by using initial neural network calibration according to the picture; semantic segmentation is carried out on the picture to obtain a semantic picture, and the type of semantic segmentation comprises lane lines; fitting the first camera external parameter and the semantic picture to obtain a first lane line equation set; according to the picture, a preset calibration method is adopted to generate a second camera external parameter; fitting the second camera external parameter and the semantic picture to obtain a second lane line equation set; comparing the first lane line equation set with the second lane line equation set to obtain a first loss function; and updating the initial neural network according to the first loss function to enable the initial neural network to meet a convergence condition, and obtaining an automatic calibration camera external parameter model. The model is obtained by continuously updating the initial neural network according to the first loss function to meet the convergence condition, so that the model can automatically calibrate the external parameters of the camera, and the calibration efficiency is greatly improved.

Description

technical field [0001] The present application relates to the technical field of camera calibration, and in particular, to a method and device for automatically calibrating an external parameter model of a camera. Background technique [0002] The camera extrinsic parameter is also called the camera pose, which consists of a rotation matrix and a translation matrix. The camera extrinsic parameter specification refers to determining a rotation matrix and a translation matrix, which are used to describe the conversion relationship between the camera coordinate system and other coordinate systems (such as the world coordinate system). In the application field of vehicle vision, camera external parameter calibration is a key link, because the accuracy of the calibration determines whether the vehicle vision system can effectively locate, ranging and other functions involving two-dimensional and three-dimensional interaction. [0003] At present, in the related art, most of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/80G06V20/58G06V10/26G06V10/762G06V10/82G06K9/62G06N3/04G06N3/08
CPCG06T7/80G06N3/08G06T2207/20081G06T2207/20084G06T2207/30256G06N3/045G06F18/23
Inventor 孟鹏飞单国航贾双成朱磊潘冰
Owner ZHIDAO NETWORK TECH (BEIJING) CO LTD
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