Fingernail Image Processing for Accurate Nail Art Printing
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Solution Overview
Problem
Existing nail printing technologies fail to accurately print nail art when the fingernail position changes between detection and printing, especially if the fingernail moves before the printing process begins.
Innovation Solution
A system comprising a non-transitory computer-readable storage medium with a program that detects the printing-target fingernail area from captured images, creates print data, and corrects it based on differences between initial and subsequent detections, ensuring accurate alignment and positioning during printing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the fingernail position is detected before printing, then the printing process can be initiated, but the fingernail position may change between detection and printing causing misalignment
Solution Approach 1:
The system performs preliminary detection of the fingernail position and creates print data in advance, then performs a second detection immediately before printing to check for position changes. This allows the printing process to be prepared in advance while ensuring accuracy through a final position verification, resolving the contradiction between speed and precision.
Solution Approach 2:
The system implements feedback by comparing the first detection results with the second detection results performed right before printing. If position changes are detected, the print data is corrected accordingly. This feedback mechanism ensures that even though printing is initiated based on preliminary detection, the actual printing position accuracy is maintained through real-time position verification and correction.
2Manufacturing precision
If the printing operation is stopped to adjust for fingernail position changes during printing, then printing accuracy is improved, but printing time increases
Solution Approach 1:
The system performs position detection and print data creation in advance before the actual printing begins. By completing these preparatory actions beforehand and performing only a quick second detection immediately before printing, the system avoids time-consuming interruptions during the printing process itself, thus improving speed without sacrificing accuracy.
Solution Approach 2:
The system rushes through the position verification process by performing the second detection immediately before printing rather than continuously monitoring during the entire printing process. This allows the system to quickly confirm position accuracy without adding significant time to the overall printing operation, resolving the contradiction between precision and time loss.
3Manufacturing precision
If the fingernail position is detected continuously during the entire printing process, then position accuracy is maintained, but system complexity increases
Solution Approach 1:
The system performs the first position detection in advance to establish baseline print data, then performs only a second detection immediately before printing to verify no position changes occurred. This two-stage approach maintains position accuracy without requiring continuous detection during the entire printing process, thus reducing system complexity while preserving precision.
Solution Approach 2:
Instead of performing continuous detection throughout the entire printing process, the system performs detection partially - specifically at two critical moments (before printing initiation and immediately before printing execution). This partial detection approach is sufficient to maintain accuracy without the excessive complexity of continuous monitoring.
Data Source
AI summary
An information processing apparatus detects a printing-target fingernail area from a first captured image, creates print data for performing printing in the detected fingernail area, and detects a printing-target fingernail area from a second captured image before transmitting the print data to a printer. The print data is corrected based on a difference between the first and second detection results. In addition, a change in position, gradient, and shape of a fingernail based on the first detection results and the second detection results is detected, and it is determined whether one of an amount of change in position, an amount of change in gradient, and an amount of change in shape of a fingernail is larger than or equal to a predetermined threshold value.