Directional Item Guidance Using Combined RFID and Camera Data

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Solution Overview

Problem

Locating specific items in facilities with thousands of distinct SKUs is challenging due to visual similarities among items and limitations in existing RFID-based guidance systems, which lack directional information.

Innovation Solution

Combining camera and RFID data to identify visual features and RFID tags, enabling accurate directional guidance for item location by detecting candidate positions using image processing and merging bounding boxes with matching visual attributes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If RFID-based guidance systems are used to locate items, then item identification capability is improved, but directional accuracy deteriorates due to lack of visual feature integration

Engineering Contradiction:

Improveitem identification capabilityVSAvoiddirectional accuracy

Core Design Contradiction:

Loss of informationVSMeasurement precision

Solution Approach 1:

The patent combines RFID sensor data with camera image data to create a unified item location system. The RFID reader provides item identification while the camera captures visual features, and their integration through the processor enables both accurate identification and precise directional guidance by merging the strengths of both sensing modalities.

Inventive Principle:

Principle #5Merging (Combining)

2Measurement precision

If visual features alone are used to identify items, then directional information is improved, but item identification accuracy deteriorates due to visual similarities among items

Engineering Contradiction:

Improvedirectional informationVSAvoiditem identification accuracy

Core Design Contradiction:

Measurement precisionVSLoss of information

Solution Approach 1:

The RFID tag acts as an intermediary that provides unique identification information for items with similar visual appearances. While the camera captures visual features for directional guidance, the RFID reader retrieves unique identifiers that definitively distinguish between visually similar items, serving as a mediator that resolves identification ambiguity.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Measurement precision

If combined sensor data processing is implemented, then item location accuracy is improved, but system complexity increases due to integration of multiple sensing modalities

Engineering Contradiction:

Improveitem location accuracyVSAvoidsystem complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The processor is designed to perform multiple functions: it processes RFID sensor data for item identification, processes camera image data for visual feature extraction and directional information, and integrates both data streams. This multi-functionality consolidates what could be separate complex systems into a single unified processing unit, managing complexity through functional integration.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20260065216A1Directional Guidance Using Combined Sensor Data

Publication Date: 2026.03.05 ZEBRA TECHNOLOGIES CORP

AI summary

A method in a computing device includes: obtaining an item identifier; capturing, via a camera, an image of a portion of a facility; capturing, via a radio frequency identification (RFID) reader, a tag identifier from an RFID tag associated with an item disposed in the facility; in response to determining that the tag identifier is associated with the item identifier, detecting from the image a visual feature of the item identifier; determining, based on the visual feature, a candidate position of the item and the RFID tag in the image; and controlling an output device to present the candidate position.