Mobile Camera Tilt Correction via Profile Analysis

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Solution Overview

Problem

Current mobile terminal cameras lack a convenient method to correct the tilt of rectangular subjects due to photographing angles, resulting in poor user experience and complicated post-processing editing.

Innovation Solution

A method and apparatus that detect the subject's profile, analyze its tilt, and automatically straighten it within the camera viewfinder using auxiliary lines and arrows, allowing for real-time correction during photography.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the camera is placed on the vertical line at the center point of the object perpendicular to the plane of the object, then the subject is photographed without tilt, but it is hard to achieve when the subject area is too large or the subject is placed on the ground

Engineering Contradiction:
Improvephotographing accuracyVSAvoidoperability
Core Design Contradiction:
Manufacturing precisionVSEase of operation

Solution Approach 1:

The system performs preliminary detection of the subject profile and tilt status before photographing, and automatically executes straightening processing in advance, so that the user does not need to manually adjust the camera position or perform post-processing editing

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system automatically detects the subject profile, determines tilt status, and performs straightening processing without user intervention, making the camera serve itself to correct the photographing angle issue

Inventive Principle:
Principle #25Self-service

2Manufacturing precision

If the captured picture is imported into a computer or mobile phone library and edited through mapping software or picture editing software, then the tilt can be corrected through straightening, but the process becomes complicated with many steps

Engineering Contradiction:
Improvephotographing accuracyVSAvoidprocess complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The system combines the tilt detection and straightening processing functions directly into the camera application, merging multiple operations (detection, analysis, and correction) into a single integrated process that executes automatically during photographing

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The straightening processing is performed in advance during the photographing process itself, before the picture is captured and saved, so that no post-processing editing is needed

Inventive Principle:
Principle #10Preliminary action

3Manufacturing precision

If manual editing operations are performed to correct the tilt, then the photographing accuracy can be improved, but user experience deteriorates due to poor convenience and difficulty in operation

Engineering Contradiction:
Improvephotographing accuracyVSAvoidconvenience
Core Design Contradiction:
Manufacturing precisionVSEase of operation

Solution Approach 1:

The system automatically detects the subject profile, determines tilt status, and performs straightening processing without user intervention, making the camera serve itself to correct the photographing angle issue

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system provides visual feedback by displaying auxiliary lines and arrows in the viewfinder to indicate the detected subject profile and suggested straightening direction, allowing users to verify the automatic detection results

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS10313596B2Method and apparatus for correcting tilt of subject ocuured in photographing, mobile terminal, and storage medium
Publication Date: 2019.06.04 ZTE CORP
  • US10313596B2 patent drawing
  • US10313596B2 patent drawing
  • US10313596B2 patent drawing

AI summary

A method and an apparatus for correcting a tilt of a subject occurred in photographing, as well as a mobile terminal and a computer storage medium are provided. In some embodiments, the method includes: after it is detected by a mobile terminal that the subject enters a viewfinder interface, identifying a boundary of a profile of the subject to obtain the profile of the subject; analyzing the profile of the subject to determine whether the subject is tilted; and performing a process for straightening and photographing on the subject to obtain a picture in which the subject is straightened if the subject is determined to be tilted.