Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for generating and decoding watermarks. An image and a data item is received. The encoder generates a first watermark and then a second watermark is generated using multiple first watermarks. The second watermark is used to watermark the image by overlaying the second watermark over the image. To decode the watermark, presence of a watermark is determined on a portion of an image. A distortion model determines distortions in the image and modifies the portion of the image based on the predicted distortions. The modified portion is decoded using the decoder to obtain a predicted first data item that is further used to validate the watermark based on the first data item.

Abstract: The present invention provides an airway implant device having an electroactive polymer element, including: a composite layer having a polymer substrate and a biocompatible conductive material, wherein the composite layer also can be opposing surfaces; and a conductive polymer layer disposed on at least one of the opposing surfaces of the composite layer, wherein the implant device is adapted and configured to modulate an opening of an air passageway. Some embodiments include a housing designed to conform to the shape of the palate. Some embodiments include an attachment element to secure the device to tissue. Methods of treating airway disorders such as sleep apnea and snoring with the airway implant device are disclosed herein.

Abstract: The present invention provides an implant for stabilizing the tongue, including: a first anchoring portion for securing a first end of the implant with the mandibula; a control portion connected with the anchoring portion, configured for selectively activating the implant; a flexible portion connected at its proximal end with the control portion, the flexible portion having three-dimensional flexibility in a non-energized state and the flexible portion having a lesser three-dimensional flexibility in a energized state, the flexible portion being selectively switchable between the non-energized and energized states by the control portion, wherein the flexible portion can be an electroactive polymer element having: a composite layer having a polymer substrate and a biocompatible conductive material, wherein the composite layer also can be opposing surfaces; and a conductive polymer layer disposed on at least one of the opposing surfaces of the composite layer; and a second anchoring portion connected with the f