Reflection Based Tracking System for Retail Shelf Monitoring
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Solution Overview
Problem
Accurately and cost-effectively tracking on-shelf availability and planogram compliance remains challenging for retailers, manufacturers, and suppliers, as existing methods like RFID and camera installations are expensive and inefficient.
Innovation Solution
A reflection-based tracking system using a camera and strategically positioned mirrors to sense and interpret the arrangement of products across multiple aisles, allowing a single camera to view contents of multiple shelves by utilizing convex and concave mirrors to reduce the need for multiple cameras and enhance viewing angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple cameras are installed to track multiple aisles, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
Mirrors are introduced as intermediary elements to redirect light paths between the single camera and multiple aisles. The mirrors enable the camera to view around corners and capture images of products in multiple aisles without requiring physical placement of cameras in each aisle, thus maintaining tracking accuracy while reducing system complexity
Solution Approach 2:
The system adds spatial dimensionality to the camera's field of view by using mirrors positioned at strategic locations (e.g., ceiling corners, shelf ends) to reflect images from multiple aisles into a single camera. This allows one camera to effectively monitor multiple three-dimensional spaces that would otherwise require multiple cameras
2Device complexity
If mirrors are added to enable single camera multi-aisle viewing, then device complexity is reduced, but measurement precision may deteriorate
Solution Approach 1:
The system replaces direct optical viewing with reflected optical paths. Instead of physically positioning cameras in multiple locations to directly view each aisle, the mechanical arrangement of mirrors substitutes for multiple camera installations, redirecting light to provide accurate product images through optical reflection principles
3Measurement precision
If RFID systems are deployed for tracking, then measurement precision is improved, but cost increases
Solution Approach 1:
The system replaces expensive RFID infrastructure with inexpensive optical components (standard camera and mirrors). The camera and mirror assembly provides a cost-effective alternative to RFID tags and readers, achieving comparable tracking functionality through visual inspection rather than electronic identification
Solution Approach 2:
The system creates visual copies (images) of products in multiple aisles through mirror reflections captured by a single camera. These image copies serve the same tracking purpose as RFID data, allowing product monitoring, inventory management, and planogram compliance verification without requiring physical RFID tags on each product
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
This system provides real-time tracking of on-shelf availability and planogram compliance, reducing costs by minimizing the number of cameras required and improving accuracy, while also being adaptable to shifts in mirror and camera positions without the need for frequent recalibration.
Implementation Method 1
a plurality of mirrors configured in a space so that the plurality of mirrors reflects a plurality of views of structures in the space
Data Source
AI summary
In one embodiment, a processor can receive data representing a view reflected by a mirror of a plurality of mirrors. The plurality of mirrors may be configured in a space to reflect a plurality of views of structures in the space. The mirror of the plurality of mirrors may include a uniquely identifiable feature distinguishable from other objects in the space. The processor can identify the mirror of the plurality of mirrors according to the uniquely identifiable feature. The processor can also determine an attribute of the structures according to the identified mirror and the data representing the view reflected by the mirror.