Dynamic Image Size Adjustment for Scanning Distance
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Solution Overview
Problem
In scenarios where images need to be scanned, such as ticket collection or payment, the fixed size of images displayed by end-user devices often leads to suboptimal scanning due to varying distances between the device and the scanning device, resulting in unsuccessful scans as the image appears too small or large, requiring staff to manually adjust the scanning device's position.
Innovation Solution
An image display method and device that determines the current image displayed, detects the distance between the end-user device and the scanning device, calculates an optimal image size based on this distance, and adjusts the displayed image size to facilitate successful scanning, allowing the image to be scanned from any location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the image size is fixed, then the display is simple, but the scanning success rate decreases when distance varies
Solution Approach 1:
The patent applies dynamics by making the image size adjustable rather than fixed. The system dynamically changes the display size of the image based on the detected distance between the terminal device and scanning device, allowing the image to adapt to varying distances and maintain optimal scanning conditions.
Solution Approach 2:
The patent implements parameter changes by modifying the display size parameter of the image according to the detected distance. When the distance changes, the system calculates and adjusts the image size parameter accordingly, ensuring the image remains within the optimal scanning range regardless of distance variations.
2Reliability
If the image size is adjusted dynamically, then the scanning success rate increases, but the control complexity increases
Solution Approach 1:
The system performs self-service by automatically detecting the distance and adjusting the image size without requiring manual intervention. The terminal device autonomously monitors the distance between devices and dynamically modifies the image display parameters, eliminating the need for staff to manually adjust the scanning device position.
Solution Approach 2:
The patent implements feedback by continuously detecting the distance between the terminal device and scanning device, using this information to adjust the image size, and maintaining this closed-loop control to ensure the image remains within the optimal scanning range throughout the interaction.
3Productivity
If manual adjustment of scanning device position is required, then the system structure is simple, but the time consumption increases
Solution Approach 1:
The patent replaces the mechanical adjustment of the scanning device position with an electronic/software-based solution. Instead of physically moving the scanning device, the system uses distance detection and dynamically adjusts the image display size through software control, significantly reducing the time required for adaptation.
Data Source
AI summary
An end-user device displays an image at a first size. The end-user device obtains a distance between the end-user device and an object. The end-user device includes a predetermined mapping relationship between distance and size. The end-user device determines a second size based on the distance and the predetermined mapping relationship. The end-user device displays the image at the second size.