Camera correction method and device

A calibration method and camera technology, applied in image communication, television, electrical components, etc., can solve the problems of occupying space and increasing the manufacturing cost of mobile terminals.

Inactive Publication Date: 2018-05-04
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existence of the camera bracket not only increases the manufacturing cost of the mobile terminal, but also takes up valuable space of the mobile terminal and limits the layout of the camera on the mobile terminal. After the support, the installation error of the camera in the mobile terminal is corrected to ensure the coaxiality of the optical axes of two or more cameras set on the same side of the mobile terminal, so as to ensure the photo effect

Method used

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  • Camera correction method and device

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Experimental program
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Embodiment 1

[0040] figure 1 A schematic diagram of a camera calibration process provided by an embodiment of the present invention, the process includes:

[0041] S101: Acquire a target image of a preset calibration plane captured by a camera of a mobile terminal at a preset position, where the preset calibration plane includes a calibration point.

[0042] The camera calibration method provided by the embodiment of the present invention is applied to a mobile terminal, at least two cameras are arranged on the same side of the mobile terminal, and the mobile terminal can be a mobile phone or a tablet computer with at least two cameras arranged on the same side and other equipment. Specifically, after the cameras are installed in the corresponding installation positions in the mobile terminal, the camera calibration method provided in the embodiment of the present invention can be used to calibrate each camera installed on the same side of the mobile terminal.

[0043] In the embodiment ...

Embodiment 2

[0058] In order to ensure the accuracy of camera calibration, on the basis of the above embodiments, in the embodiment of the present invention, when the determination is to move the check point to the center of the target image, the The first correction angle of the optical axis of the camera in the horizontal direction and the second correction angle in the vertical direction include:

[0059] According to the first coordinates of the verification point in the target image collected by the camera, the second coordinates of the center point of the target image, and the position of the verification point on the preset verification plane, determine the A target point corresponding to the center point of the target image on the preset calibration plane;

[0060] Determine the first straight line according to the third coordinate of the camera in the world coordinate system and the fourth coordinate of the target point in the world coordinate system, and determine the first strai...

Embodiment 3

[0068] In order to further ensure the effect of the mobile terminal taking pictures, on the basis of the above-mentioned embodiments, in the embodiment of the present invention, the method further includes:

[0069] Acquiring the actual distance between the lens of the camera and the preset calibration plane; determining the correction length of the lens of the camera according to the difference between the pre-saved theoretical distance and the actual distance; adjusting the length according to the correction length The distance between the lens of the camera and the preset verification plane, wherein the theoretical distance is the distance between the lens of the camera and the preset verification plane when the camera is installed accurately in the mobile terminal .

[0070] Pre-saved in the mobile terminal, when the mobile terminal is at the preset position and each camera is installed accurately in the mobile terminal, the theoretical distance between the lens of each ca...

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Abstract

The invention discloses a camera correction method and device, which are applied to a mobile terminal with at least two cameras arranged on the same side surface. The method comprises the steps of: obtaining a target image of a pre-set check plane acquired by the camera when the mobile terminal is at a pre-set position, wherein the pre-set check plane comprises a check point; and, while moving thecheck point to the centre of the target image in the target image, determining the first correction angle of the optical axis of the camera in the horizontal direction and the second correction angleof the optical axis of the camera in the vertical direction, and adjusting the lens position of the camera. In the embodiment of the invention, the first correction angle of the optical axis of eachcamera arranged on the same side surface in the horizontal direction and the second correction angle of the optical axis of each camera arranged on the same side surface in the vertical direction aredetermined through the same check point of the same pre-set check plane; the lens position of each camera is adjusted; and thus, when a camera support does not exist, the coaxiality of the optical axes of two or more cameras arranged on the same side surface of the mobile terminal can be ensured.

Description

technical field [0001] The present invention relates to the technical field of mobile terminals, in particular to a camera calibration method and device. Background technique [0002] With the rapid development of the national economy, mobile terminals have entered thousands of households and have become an indispensable electronic product in people's work and life. While enjoying the convenience brought by the mobile terminal, people also put forward higher requirements on the experience of using the mobile terminal. [0003] With the continuous improvement of people's requirements for taking photos of mobile terminals, the single-camera photo-taking solution can no longer meet people's growing photo-taking needs. More and more mobile terminal manufacturers choose dual-camera or even multi-camera photo-taking solutions for Meet people's growing demand for taking pictures. Wherein the dual-camera or even multi-camera camera scheme refers to that dual-cameras or multi-camer...

Claims

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Application Information

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IPC IPC(8): H04N17/00
CPCH04N17/002
Inventor 许超冯科郑亚东
Owner GREE ELECTRIC APPLIANCES INC
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