Multi-Camera Imaging Control for Consistent Luminance

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Solution Overview

Problem

Existing imaging systems struggle to maintain consistent image capturing settings when switching between cameras with different lens angles of view, leading to variations in luminance and color tone due to differences in camera settings and evaluation values, and existing solutions either calculate average values that reduce effectiveness or fail to account for changes in angle of view.

Innovation Solution

A method for controlling multiple imaging apparatuses that involves acquiring and sharing information about image capturing angles and parameters, allowing one camera to adjust its settings based on the other's parameters and angle of view, thereby ensuring appropriate settings during lens changes, such as from wide-angle to telephoto or vice versa.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If average evaluation values are used across multiple cameras, then consistency between cameras is improved, but effectiveness decreases due to differences in angle of view and luminance distribution

Engineering Contradiction:
Improveconsistency between camerasVSAvoideffectiveness of evaluation values
Core Design Contradiction:
Stability of the object's compositionVSReliability

Solution Approach 1:

The patent applies local quality by determining different evaluation values for different regions of the image based on the angle of view. Instead of using a single average evaluation value for the entire image, the system divides the image into multiple regions and calculates appropriate evaluation values for each region, considering the specific luminance distribution characteristics of wide-angle and telephoto lenses.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent changes the parameters used for evaluation value calculation based on the angle of view. For wide-angle lenses, different luminance thresholds and evaluation criteria are applied compared to telephoto lenses. This parameter adaptation ensures that evaluation values are appropriate for each lens type while maintaining overall consistency.

Inventive Principle:
Principle #35Parameter changes

2Ease of operation

If image capturing settings are shared between cameras, then work for individual adjustments is reduced, but appropriateness decreases when angle of view changes

Engineering Contradiction:
Improvework for individual adjustmentsVSAvoidappropriateness of settings
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The patent implements dynamic adjustment of image capturing settings based on the detected angle of view. When the system detects a change from wide-angle to telephoto or vice versa, it automatically adjusts the evaluation values and image capturing parameters accordingly. This dynamic adaptation maintains setting appropriateness while reducing manual intervention.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent uses feedback from angle of view detection to adjust image capturing settings. The system continuously monitors the angle of view and uses this information to modify evaluation values and capturing parameters in real-time, ensuring that settings remain appropriate for the current lens configuration without requiring manual reconfiguration.

Inventive Principle:
Principle #23Feedback

3Manufacturing precision

If cameras operate independently with individual settings, then image quality is optimized for each camera, but consistency across cameras deteriorates

Engineering Contradiction:
Improveimage quality optimizationVSAvoidconsistency across cameras
Core Design Contradiction:
Manufacturing precisionVSStability of the object's composition

Solution Approach 1:

The patent creates a universal evaluation value determination mechanism that works across multiple cameras with different angle of views. By establishing common determination criteria that adapt to different lens types, the system achieves both individual camera optimization and cross-camera consistency simultaneously.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS11258943B2Imaging apparatus and method for controlling the same
Publication Date: 2022.02.22 CANON KK
  • US11258943B2 patent drawing
  • US11258943B2 patent drawing
  • US11258943B2 patent drawing

AI summary

A method for controlling a plurality of imaging apparatuses capable of communicating with each other includes acquiring information about an image capturing angle of view of each of the plurality of imaging apparatuses, and determining an image capturing parameter to be used when one imaging apparatus among the plurality of imaging apparatuses shifts to a use state, based on information about an image capturing parameter or evaluation value in an other imaging apparatus, and an image capturing angle of view of each of the other imaging apparatus and the one imaging apparatus.