Self-Checkout Device Confirmation Waiting Time
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Solution Overview
Problem
Existing self-checkout-payment devices are bulky and lack space-saving designs, leading to interference with image recognition due to user interaction with the touch screen display, causing inaccurate item recognition and user discomfort.
Innovation Solution
A checkout-payment device with a touch screen display opposite the user across a table, featuring a first camera for item recognition and a second camera for face recognition, along with a controller that implements a confirmation waiting time to prevent interference and ensure accurate item recognition, allowing for easy installation in small spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the touch screen display is arranged close to the camera for space-saving design, then the device footprint is reduced, but the user's hand enters the camera's shooting area causing interference with image recognition
Solution Approach 1:
The controller pauses the item recognition operation during a confirmation waiting time period when the user is expected to interact with the touch screen display. This preliminary pausing action prevents the user's hand from interfering with the camera's shooting area, thereby maintaining image recognition accuracy while enabling space-saving design.
Solution Approach 2:
The system dynamically adjusts its operation state based on the user interaction phase. During the confirmation waiting time when user interaction is expected, the recognition operation is paused. After the waiting time expires, the recognition operation resumes. This dynamic state adjustment allows the display to be positioned closer to the camera without compromising recognition accuracy.
2Ease of operation
If the confirmation waiting time is extended to ensure user can operate the display, then user comfort is improved, but the checkout process time increases
Solution Approach 1:
The controller adjusts the confirmation waiting time parameter based on the distance between the touch screen display and the camera. When the display is positioned closer to the camera (increasing interference risk), the waiting time is set longer to ensure users can comfortably operate the display without their hands entering the shooting area. This parameter adjustment balances user comfort with efficient checkout processing.
Data Source
AI summary
A checkout-payment device includes a table on which an item can be placed; a touch screen display; a camera for shooting the item on the table; and a controller configured to perform an operation for recognizing the item based on an image captured by the camera, display an item recognition result on the touch screen display, and start a confirmation waiting time during which the controller continues the item recognition operation and the user can confirm the item recognition result, followed by transitioning to a state in which the user's instructions for payment execution is acceptable.