InterTrust

eWatermarking

eWatermarking provides a technique that enables everyone to easily protect digital content copyrights without having to perform complicated procedures. eWatermarking also provides a technique for authenticating digital content. The products are designed for those content holders, such as Webmasters, creators, and photographers, who want to protect their copyrights online.

SteganoSign

SteganoSign is a software program that can embed and detect digital watermarks in various types of images and audio data. SteganoSign can embed digital watermarks in popular image formats such as JPEG, BMP, PCX, TIFF, and PCT. For audio data, it supports .wav files. SteganoSign is equipped with a scanner input feature. SteganoSign can also embed a digital watermark or hide a document in a handwritten manuscript or drawing.

Variable Display Digital Watermark

Variable Display Digital Watermark is a new digital watermarking scheme to color images, which can display the mark in a visible-to-invisible state. eWatermarking proposes a digital, visible watermarking scheme to color images, which controls the color transformation between the RGB and YCbCr color systems for each pixel. In this scheme, a logo-mark is displayed in a visible-to-invisible style on the color image. The displayed mark is changeable to an invisible or half-visible state when it is requested. Then, the original image is recovered smoothly, but the watermark remains in the invisible state. Using this method, the author can show the copyright in various states and may change the displayed mark to an invisible one without losing the watermark signal that protects it against StirMark attacks.

More information can be found at www.ewatermark.com.