Reference-Guided Collation Area Detection Under Camera Shake

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Solution Overview

Problem

Existing methods struggle to reliably acquire a collation area in images due to camera shake or unstable positioning when using a mobile terminal, as relative coordinates from a reference mark fluctuate during photographing.

Innovation Solution

A collation device and method that includes detecting a reference position area, setting a peripheral image area based on predetermined relative coordinates, and detecting the collation area within this peripheral image area to stabilize the acquisition process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If relative coordinates from a reference mark are used to specify the collation area, then the collation area can be located, but the position fluctuates due to camera shake or unstable positioning during photographing

Engineering Contradiction:

Improveposition accuracyVSAvoidacquisition stability

Core Design Contradiction:

Measurement precisionVSReliability

Solution Approach 1:

The patent applies preliminary action by first detecting the reference position area and storing its coordinates before using them to specify the collation area. This pre-detection and storage of reference position information ensures that the coordinates are captured in a stable state, and subsequent calculations based on these coordinates remain reliable even when camera shake occurs during the actual photographing process.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent uses the reference position area as an intermediary element to stabilize the collation area detection process. By detecting the reference position first and using its coordinates as a baseline, the system creates a stable reference frame that mediates between the unstable camera positioning and the required precise collation area identification, reducing fluctuations caused by camera shake.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If manual positioning is used to photograph the collation area, then the device can be operated simply, but positioning errors occur due to camera shake or unstable holding

Engineering Contradiction:

Improveoperation simplicityVSAvoidpositioning accuracy

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The patent applies self-service by having the system automatically detect the reference position area and calculate the collation area coordinates based on predetermined relative coordinates. This automation eliminates the need for manual positioning adjustments, allowing users to simply photograph the object while the system handles the complex coordinate calculations and position stabilization automatically.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical positioning with an automated image processing system. Instead of requiring the user to manually align and position the camera precisely, the system uses image detection algorithms to automatically identify the reference position and calculate the collation area, substituting mechanical positioning precision with computational precision.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS12424003B2Collation device, non-transitory computer readable medium storing program, and collation method

Publication Date: 2025.09.23 FUJIFILM BUSINESS INNOVATION CORP

AI summary

A collation device includes a processor configured to, by executing a program: (a) acquire a photographed image including a collation area provided on an object and a reference position area that serves as a reference for a position of the collation area; (b) detect the reference position area from the photographed image; (c) set a peripheral image area in the photographed image based on the reference position area and predetermined relative coordinates; and (d) detect the collation area in the peripheral image area.