Digital watermarking image signals on-chip and photographic travel logs through dgital watermarking

摘要

The disclosure describes methods and apparatus for providing digital watermarks in image data. One implementation embeds digital watermarks on-chip with respect to a CMOS or CCD image array. Some implementations introduce a watermark component during image capture, the watermark being introduced through variations in physical characteristics of a set of pixels. Other implementations involve managing images through geo-location information embedded therein. The disclosure also describes methods and apparatus for identifying travel points through digital watermarked images. For example, an image includes location information steganographically embedded therein. The location information is used to identify or provide a map corresponding to the location information. A location on the map that is associated with the location information is visually marked with an object. In some implementations the object is the image or a thumbnail version of the image.