Method and device for obtaining rotation angle of camera

A technology of rotation angle and acquisition method, which is applied to measuring devices, electrical devices, instruments, etc., can solve the problems of different magnetic fields, easy interference of magnetic fields, and low accuracy of camera angle values, and achieves the effect of improving accuracy and good control.

Active Publication Date: 2015-04-29
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method and device for obtaining the rotation angle of the camera to solve the problem that the existing technology is easily disturbed by the magnetic field. When the electromagnetic environment of the mobile phone is different, the value collected by the Hall sensor is also different. As a result, the accuracy of the camera angle value obtained through the sampling value obtained by the Hall sensor is not high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for obtaining rotation angle of camera
  • Method and device for obtaining rotation angle of camera
  • Method and device for obtaining rotation angle of camera

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0019] The main purpose of the embodiments of the present invention is to solve the problem in the prior art that the accuracy of obtaining the rotation angle of the camera is not high. Due to the low accuracy of the rotation angle, it is not convenient to control the rotation of the camera, such as how many degrees to rotate for reset. Due to the low accuracy of the rotation angle, it is easy to cause blockage during rotation, which affects the service life of the motor.

[0020] The rotation angle measuring method in the prior art, such as figure 1 As shown, generally, a magnet is set on the cam...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention is applicable to the field of imaging and provides a method for obtaining a rotation angle of a camera. The method comprises the following steps: obtaining a first sampling value collected by a Hall sensor and a second sampling value collected by a magnetic calibration sensor; according to the corresponding relations between the rotation angle and the preset first sampling value and between rotation angle and the preset second sampling value, finding out the rotating angles corresponding to the collected first sampling value and the collected second sampling value. According to the invention, the strength of an interference magnetic signal can be obtained at the current scene through the second sampling value, and the rotation angle of the camera actually corresponding to the first sampling value can be obtained through the strength of the interference magnetic signal, so that the precision of the rotating angle, measured in the magnetic field environment, of the camera can be improved, therefore, the camera is better controlled to rotate.

Description

technical field [0001] The invention belongs to the field of imaging, and in particular relates to a method and a device for acquiring the rotation angle of a camera. Background technique [0002] In order to improve the convenience of taking pictures of smart terminals, many smart terminals are now equipped with rotating cameras, which can conveniently acquire images from multiple perspectives while keeping the position of the terminal unchanged. For example, rotating cameras are arranged in many mobile phones at present. [0003] When using a rotating camera to take pictures, the camera needs to be rotated. At present, the commonly used rotation operation control is realized by Hall sensor. The size of the magnetic field of the magnet on the rotating camera is sensed by the Hall sensor. During the rotation of the camera, the distance between the magnet and the Hall sensor is different, so the sampling value obtained by the Hall sensor is also different. Through this valu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/30
Inventor 张强
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap