The Ukrainian company develops technology that automatically tags people in photographs by identifying them via analysis of their facial features.
"Motorola Mobility today announced that it has acquired Viewdle, a leading imaging & gesture recognition company," Motorola said in a statement issused to CNET.
"Motorola and Viewdle have an existing commercial agreement and have been collaborating for some time. Terms of the transaction were not disclosed."
The phone-maker's parent company Google is expected to make use of the technology across its numerous platforms, including Google+, Android and Picasa.
Rumours suggest that Motorola paid somewhere between $30 million to $45 million for Viewdle, but official figures have not been disclosed.
