Imaging Device Guidance for Language-Independent Finger Positioning
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Solution Overview
Problem
Existing personal authentication devices struggle with guiding users to correctly position their fingers for imaging, as language-based instructions may not be understood, leading to improper finger placement.
Innovation Solution
An imaging device and method that superimposes a first display image based on captured images with a second guidance image, repeatedly capturing and displaying until the finger is correctly positioned, using multiple imaging portions and display modes to guide alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If language-based guidance (sentences and text) is used to instruct users on finger placement, then guidance information can be provided, but users who cannot comprehend the language cannot understand the guidance, leading to improper finger positioning
Solution Approach 1:
The patent introduces a visual intermediary (the finger image displayed on the screen) that mediates between the guidance system and the user. Instead of relying solely on language-based instructions, the system captures an image of the user's finger, displays it on the screen, and overlays guidance images directly onto this visual representation. This visual intermediary transcends language barriers and provides universal, intuitive guidance that any user can understand regardless of their language comprehension abilities.
Solution Approach 2:
The patent replaces the mechanical/language-based instruction system with a visual imaging system. Instead of using sentences and text (mechanical language processing), the system uses image capture, processing, and display to convey guidance information. The determination portion analyzes the captured finger image to assess positioning accuracy, and the display portion visually presents correction guidance through overlaid images, substituting language-based mechanics with visual image processing and display mechanics.
2Measurement precision
If the system repeatedly captures and displays new images until correct positioning is achieved, then accurate finger placement can be ensured, but the imaging process time increases
Solution Approach 1:
The patent implements a feedback loop where the captured finger image is immediately displayed on the screen with overlaid guidance images. The determination portion continuously assesses whether the finger is correctly positioned based on the captured image, and the display portion provides visual feedback showing the current state and required corrections. This real-time feedback enables users to make immediate adjustments, achieving accurate positioning efficiently without requiring multiple repeated capture cycles.
Solution Approach 2:
The patent employs partial action by performing image capture and analysis only to the extent necessary for determining correct positioning. Rather than requiring complete re-capture of all imaging data with each adjustment, the system performs targeted partial captures and analyses specifically focused on assessing finger placement accuracy. This selective partial action reduces unnecessary processing time while maintaining positioning precision.
Data Source
AI summary
An imaging device includes: an imaging portion that captures an image of a portion of a living body to take in the image; a display portion that displays first and second display images with being superimposed on each other, the first display image being based on the taken-in image, the second display image including guidance regarding a way to place the portion of the living body in a prescribed position; a determination portion that determines whether the portion of the living body is placed in the prescribed position; and a control portion that, until it is determined that the portion of the living body is placed in the prescribed position, causes the imaging portion to newly capture and take in a new image of the portion of the living body and causes the display portion to display an image based on the new taken-in image.