Reference | Technology | System | Techniques | Tested by | Test | Feedback | Accuracy | Remarks |
---|---|---|---|---|---|---|---|---|
CamNav | Computer vision | Smartphone, laptop | CNN based scene recognition | Blindfolded | Error occurred during navigation and navigation time | Voice | Medium | (−) Hard to differentiate indoor locations with similar appearance |
QRNav | Computer vision | Smartphone, laptop, QR codes | QR code recognition | Blindfolded | Error occurred during navigation and navigation time | Voice | Medium | (−) Requires large amount of QR codes for safe navigation |
BLE base system | BLE | Beacons and smartphone | Fingerprinting and trilateration | Blindfolded | Error occurred during navigation and navigation time | Voice | Low | (−) Relatively low accuracy resulted in navigation errors |