Portable Device Photography Mode Control via Marker Distance Detection

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Solution Overview

Problem

There is a need for a method to determine whether a portable device captures images as 2D or 3D, given the introduction of 3D image capture capabilities, and to control the photography mode effectively based on detected markers.

Innovation Solution

A portable device that detects markers to configure an image capturing area and switch between 2D and 3D photography modes by determining the distance difference between multiple camera units, using binocular parallax to generate 3D images and adjust depth settings for objects based on marker positions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the portable device captures images using multiple camera units to create 3D images, then the imaging capability is enhanced, but the complexity of controlling the photography mode increases

Engineering Contradiction:
Improveimaging capabilityVSAvoidcontrol complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system automatically determines whether to capture 2D or 3D images by analyzing the relative positions of detected markers, eliminating the need for manual mode selection. The processor autonomously decides the photography mode based on marker distance calculations, making the system self-configuring and reducing control complexity.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system changes the photography mode parameter (2D or 3D) based on the measured distance parameter between markers. When the distance exceeds a threshold, the system switches to 3D mode; otherwise, it uses 2D mode. This parameter-based control simplifies the user interface while maintaining versatile imaging capabilities.

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If the portable device uses multiple camera units arranged at different positions, then 3D image capture is enabled, but the difficulty of determining photography mode increases

Engineering Contradiction:
Improve3D image captureVSAvoidmode determination difficulty
Core Design Contradiction:
Adaptability or versatilityVSDifficulty of detecting and measuring

Solution Approach 1:

The system introduces markers as intermediary objects that facilitate mode determination. Instead of directly analyzing complex camera unit configurations, the system detects marker positions and calculates distances between them. These markers serve as mediators that translate physical spatial relationships into actionable photography mode decisions.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The system replaces manual mode selection (mechanical interaction) with automated optical detection and computational analysis. The processor uses image processing algorithms to detect markers and calculate distances, substituting mechanical control with automated vision-based determination, thereby reducing the difficulty of mode selection.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Ease of operation

If the portable device automatically determines photography mode based on marker distances, then ease of operation is improved, but measurement precision requirements increase

Engineering Contradiction:
Improvemode selection easeVSAvoiddistance measurement precision
Core Design Contradiction:
Ease of operationVSMeasurement precision

Solution Approach 1:

The system performs preliminary marker detection and distance calculation before finalizing the photography mode decision. By pre-processing the spatial information and comparing it against predetermined thresholds, the system reduces the computational burden during mode selection and maintains ease of operation while managing precision requirements through staged processing.

Inventive Principle:
Principle #10Preliminary action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables seamless switching between 2D and 3D photography modes and generates high-quality 3D images with stereoscopic depth perception by accurately determining the photography mode based on marker distances and positions, providing users with intuitive depth control.

Implementation Method 1

the portable device can capture images using a plurality of cameras and then create the 3D image using a plurality of the captured images

Methodology Applied
Scientific EffectBinocular parallax: Parallax

Data Source

PatentEP3169068B1Portable device that controls photography mode, and control method therefor
Publication Date: 2019.10.23 LG ELECTRONICS INC
  • EP3169068B1 patent drawingFigure 1
  • EP3169068B1 patent drawingFigure 2A
  • EP3169068B1 patent drawingFigure 2B

AI summary

The present specification relates to a portable device that controls a photography mode, and a control method therefor. A control method of a portable device that controls a photography mode according to an embodiment may comprise the steps of: detecting a first marker at a first distance from the portable device and a second marker at a second distance using at least one of a first camera unit and a second camera unit; and executing a photography mode that captures an image. A 2D photography mode is executed if the first distance of the detected first marker and the second distance of the detected second marker are effectively the same; and a 3D photography mode is executed if the first distance of the detected first marker and the second distance of the detected second marker are different, wherein the 3D photography mode may be a mode that generates a 3D image using binocular disparity of the first camera unit and the second camera unit.