Zooming Control Apparatus Reliability Feedback

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Solution Overview

Problem

Existing image capturing apparatuses face challenges in accurately controlling zoom operations due to detection errors of object position and size, especially when detecting objects other than people, and measurement errors of object distance, leading to potential malfunction of automatic zooming functions.

Innovation Solution

A zooming control apparatus that includes an object detection unit, a first acquisition unit for object distance information, and a zooming control unit that adjusts zoom magnification based on the reliability of detected object size and distance information, allowing for conditional adjustments to prevent frame-out and maintain object size within a predetermined range.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If automatic zooming is performed based on detected object color or focus position, then zooming control can be automated, but detection errors and measurement errors cause malfunction

Engineering Contradiction:
Improveautomatic zoomingVSAvoidzooming control reliability
Core Design Contradiction:
Extent of automationVSReliability

Solution Approach 1:

The patent implements feedback mechanisms where the system continuously monitors detection reliability and measurement reliability, and adjusts automatic zooming operations based on these reliability assessments. When reliability is high, automatic zooming is executed; when reliability is low, the system refrains from automatic zooming or prompts manual intervention, thereby maintaining control reliability while preserving automation benefits.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent changes the parameter of zooming control execution based on reliability parameters. Specifically, it introduces reliability thresholds and dynamically adjusts whether automatic zooming is performed by comparing actual detection and measurement reliability against these thresholds, thereby adapting the automation level to current system conditions.

Inventive Principle:
Principle #35Parameter changes

2Speed

If zooming control is performed without reliability assessment, then operation speed is maintained, but detection errors cause frame-out or size variation

Engineering Contradiction:
Improvezooming operation speedVSAvoidobject size consistency
Core Design Contradiction:
SpeedVSManufacturing precision

Solution Approach 1:

The patent performs preliminary reliability assessment of object detection and distance measurement before executing zooming operations. By evaluating detection reliability and measurement reliability in advance, the system determines whether conditions are suitable for automatic zooming, preventing erroneous zooming operations that would cause frame-out or size variation while maintaining operational efficiency.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system uses feedback from reliability assessments to control the execution of zooming operations. When detection reliability or measurement reliability falls below thresholds, the feedback mechanism prevents automatic zooming execution, thereby ensuring object size consistency and preventing frame-out errors while maintaining normal operation speed under reliable conditions.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS10848680B2Zooming control apparatus, image capturing apparatus and control methods thereof
Publication Date: 2020.11.24 CANON KK
  • US10848680B2 patent drawing
  • US10848680B2 patent drawing
  • US10848680B2 patent drawing

AI summary

A zooming control apparatus comprises an object detection unit configured to detect an object from an image; a first acquisition unit configured to acquire information regarding a distance to the object; and a zooming control unit configured to perform zooming control for automatically changing a zoom magnification according to at least one of second information that includes information regarding a size of the object detected by the object detection unit and first information regarding the distance to the object acquired by the first acquisition unit, wherein a condition for automatically changing the zoom magnification in the zooming control differs according to a reliability of the first information.