Camera focusing method and system

A focusing method and camera technology, applied to parts of TV systems, TVs, and color TVs, etc., can solve problems such as low accuracy of camera focusing operations and limited focusing precision, and achieve improved accuracy and precision, The effect of improving efficiency

Active Publication Date: 2017-03-22
SHENZHEN AUTEL INTELLIGENT AVIATION TECH CO LTD
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention aims to overcome the problems of low accuracy a

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
  • Camera focusing method and system
  • Camera focusing method and system
  • Camera focusing method and system

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example one:

[0033] figure 1 The implementation process of the camera focusing method provided by the embodiment of the present invention is shown. The camera focusing method and system are especially implemented as a focusing module or application software in the camera.

[0034] In step S110, a fringe test image is acquired.

[0035] The fringe test image is a test image specially used for focusing operation of a fixed-focus lens. It is currently the most widely used lens focusing test image, specifically such as figure 2 The image form shown. For the convenience of the description below, figure 2 The illustrated image form is taken as an example to illustrate the embodiment of the present invention. The distance between the placement position of the fringe test image and the fixed-focus lens may be the best imaging distance corresponding to the focal length of the fixed-focus lens. The fringe test image can be obtained by making the camera use a fixed-focus lens to sh...

Example Embodiment

[0075] Embodiment two:

[0076] Corresponding to the camera focusing method described in the above embodiment, Image 6 It shows a structural block diagram of a camera focusing system provided in the second embodiment of the present invention. The camera focusing system may be a software unit, a hardware unit, or a combination of software and hardware. For ease of description, only parts related to this embodiment are shown.

[0077] Reference Image 6 , The device includes:

[0078] The image acquisition unit 61 is used to acquire a fringe test image.

[0079] The positioning unit 62 is configured to locate an area to be identified in the stripe test image, and the area to be identified includes multiple stripe groups with different stripe widths.

[0080] The judging unit 63 is configured to judge whether the stripe group meets the preset imaging condition according to the stripe width from large to small, and if the currently judged stripe group meets the preset imaging condition, e...

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 relates to the technical field of cameras, and provides a camera focusing method and system. The camera focusing method comprises the steps that a fringe test image is acquired, and an area to be recognized is positioned in the fringe test image; whether a stripe group satisfies a preset imaging condition is determined according to the stripe width in order from large to small; if the stripe group satisfies the preset imaging condition, the stripe group of next stripe width is judged, otherwise the stripe group of previous stripe width is output as a result; whether the stripe width of the final output stripe group is within a preset stripe width range is detected; and if the stripe width of the final output stripe group is within the preset stripe width range, focus operation is completed, otherwise a lens is adjusted and re-focus operation is carried out. According to the camera focusing method provided by the invention, the accuracy rate and precision of focusing are improved without referring to the observation result of human eyes, and the focusing efficiency is improved.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of cameras, in particular to a camera focusing method and system. [0003] 【Background technique】 [0004] Fixed-focus lens, specifically refers to a lens with only one fixed focal length. Compared with zoom lenses, fixed-focus lenses have the advantages of fast focusing speed and stable imaging quality. Therefore, they have played an important role in many fields such as video surveillance, sports cameras and photography creation. role. [0005] In the production process, technicians need to focus on the fixed-focus lens: use the fixed-focus lens to shoot the fringe test image at a certain distance, and judge whether the fixed-focus lens is focused accurately according to whether the details of the fringe test image are clear , if the focus is not accurate, continue to adjust the focal length of the fixed-focus lens until the focus is completed. [0006] However, the above-mentioned focusing proce...

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
IPC IPC(8): H04N5/232
Inventor 李佐广龚煜刘洋
Owner SHENZHEN AUTEL INTELLIGENT AVIATION TECH CO 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