Bluetooth technology
Our project works with Bluetooth technology on mobile phones, to achieve the “museum-localization”: a Bluetooth antenna placed at the entrance of the museum sends its signal to the phone in order, for the application, to download the right paintings’ database.
RFID localization
When the booking clerk uploads the application, he/she also gives a Spook-gadget to the child.
The gadget contains a RFID tag and players have to hang it on their mobile phones.
At the entrance of each room, there is a RFID reader which communicates room info to the application that shows them on screen.
Image recognition
We need an image control system that confirms that the child actually took a picture of a detail of the category he/she had selected.
In our research we found an application (for Iphone or accessed by Internet) called SnapTell, that makes an image recognition of pictures of covers of books, cds, dvds. From SnapTell website:
“SnapTell offers the industry’s leading and most scalable image recognition technology for camera phones. [...] SnapTell has created core patent pending proprietary technology for image matching that works with databases of millions of images. This highly accurate and robust algorithm for image matching is called “Accumulated Signed Gradient” (ASG).”
The ASG technology works on pictures taken with any camera phone, in different light conditions, that shows the whole objects or only a part of it. The details about how this technology works are secret: so we can just suppose that the algorithm operates a comparison between the sent image and the images in a database, considering the relation between the color values of each part.
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