Self-Service POS Terminal RFID Verification via Camera Object Recognition
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional point of sale (POS) terminals using RFID tags for item tracking face challenges with reading omissions and erroneous detections due to tag position, orientation, and overlap, making it difficult for customers to identify missing or incorrectly read tags.
Innovation Solution
A self-service POS terminal equipped with a wireless tag reader, camera, memory, and processor that captures images of items, performs object recognition, and compares the number of RFID tags read with the number of items shown in the images to ensure accurate checkout processing and issue notifications for discrepancies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If RFID tag reading is used for automatic item registration, then checkout efficiency is improved, but reading omissions and erroneous detections occur due to tag position and orientation issues
Solution Approach 1:
The system captures images of items in the basket, performs object recognition to identify items, and compares the recognized items with RFID tag reading results. This feedback mechanism detects discrepancies between RFID readings and actual items, allowing the system to identify reading omissions or erroneous detections and notify the customer accordingly.
2Reliability
If multiple antennas are deployed to improve tag reading coverage, then reading completeness is improved, but device complexity and cost increase
Solution Approach 1:
The patent introduces an intermediary verification system consisting of a camera and object recognition algorithm. This intermediary component validates the RFID tag reading results by independently identifying items through image recognition, thereby improving reading completeness without requiring additional RFID antennas or increasing RFID system complexity.
3Productivity
If automatic RFID reading is implemented, then customer service speed is improved, but customer awareness of reading errors is reduced
Solution Approach 1:
The system provides feedback to the customer by displaying notifications when discrepancies are detected between RFID tag readings and actual items in the basket. This maintains the speed of automatic processing while ensuring customers are informed of any reading errors, preserving their awareness and ability to correct mistakes.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables easy recognition of missing or improperly read RFID tags, reducing errors in the checkout process and enhancing customer transparency by providing clear notifications for discrepancies between read tags and actual items.
Implementation Method 1
a wireless tag reader that reads tag information from one or more wireless tags
Implementation Method 2
control a camera to capture one or more images and generate image data from each of the images
Data Source
AI summary
A self-service POS terminal includes a tag reader, a camera, and a processor configured to: start a registration process to register items each of which has a wireless tag attached thereto, control the wireless tag reader to read tag information from wireless tags and store the tag information in memory, determine a number of the tags based on the tag information, control the camera to capture images and generate image data from each of the images, perform object recognition on the image data to determine a number of items shown in the images, compare the number of the tags with the number of the items, when the number of the tags is identical to the number of the items, perform a checkout process, and when the number of the tags is not identical to the number of the items, issue a notification signal.