Striped Pattern Image Examination Support Apparatus
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Solution Overview
Problem
Current methods for determining whether two striped pattern images, such as fingerprints or palmprints, are from the same object are cumbersome and prone to error, especially when images are of poor quality or have non-overlapping ridges due to deformation or rotation, requiring manual coloring and significant man-hours.
Innovation Solution
A striped pattern image examination support apparatus and method that extracts central lines and feature points from images, collates corresponding central lines, and displays them using different colors or highlighting to facilitate identification of matching and non-matching ridges, reducing the burden on examiners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual visual comparison of ridges is performed by examiners, then determination accuracy can be maintained, but examination time and labor cost increase significantly
Solution Approach 1:
The patent introduces an automatic ridge collation function that acts as an intermediary between the two fingerprint images. This function automatically computes and displays corresponding ridges using visual recognition formulas, serving as a mediator that assists examiners in their visual comparison process without replacing it entirely, thereby maintaining accuracy while reducing examination time
Solution Approach 2:
The patent replaces the manual mechanical process of visually tracing and comparing ridges with an automatic computational system. The system uses visual recognition formulas to automatically compute corresponding ridges, substitute the time-consuming manual comparison process with automated computation, while still presenting results in a visually comprehensible format for examiner verification
2Ease of operation
If two fingerprint images are displayed side by side for comparison, then examiners can visually assess the images, but it becomes difficult to determine whether ridges at corresponding positions are identical
Solution Approach 1:
The patent introduces a ridge collation function as an intermediary that computes and displays corresponding ridges between the two fingerprint images. This intermediary function bridges the gap between the side-by-side display format and the need for ridge correspondence detection, automatically identifying and displaying matching ridges to assist examiners in their visual assessment
Solution Approach 2:
The patent employs color coding to display corresponding ridges, where ridges that match between the two fingerprints are highlighted in a specific color. This color change technique makes it visually apparent which ridges correspond to each other, transforming the difficult task of ridge correspondence detection into an easily observable visual task
3Productivity
If automatic ridge collation is performed using visual recognition formulas, then examination efficiency increases, but the system becomes more complex
Solution Approach 1:
The patent integrates the ridge collation function within the existing fingerprint examination system, making it a multi-functional tool that serves both automatic ridge matching and visual comparison purposes. This universal approach allows the system to perform multiple functions (automatic collation, visual display, examiner verification) without requiring separate dedicated systems, thereby managing complexity while improving productivity
Data Source
AI summary
A striped pattern image examination support apparatus includes a feature extraction part, a central line collation part, and a display part. The feature extraction part extracts, from each of a first striped pattern image and a second striped pattern image, at least central lines and feature points, as a feature of each of the first striped pattern image and the second striped pattern image. The central line collation part performs collation of the respective central lines of the first striped pattern image and the second striped pattern image, and computes corresponding central lines between the first striped pattern image and the second striped pattern image. The display part determines a display form of each of the central lines based on the computed corresponding central lines and superimposes and displays the central lines on each of the first striped pattern image and the second striped pattern image, according to the determined display form.