In this world where media owners are desperately
trying to protect their images from being
manipulated & illegally used, it is often desired to
obtain a robust digital watermarking method that
does not distort the digital image, even if this
implies that the image is slightly expanded in size
before final compression. The aim of this work was
to develop a new algorithm to embed a watermark in
JPEG compressed images, using encoding methods. This
encompasses the embedding of proprietary
information, such as identity and authentication
bitstrings, into the compressed material. This
watermark encoding scheme involves combining entropy
coding with homophonic coding, in order to embed a
watermark in a JPEG image.
trying to protect their images from being
manipulated & illegally used, it is often desired to
obtain a robust digital watermarking method that
does not distort the digital image, even if this
implies that the image is slightly expanded in size
before final compression. The aim of this work was
to develop a new algorithm to embed a watermark in
JPEG compressed images, using encoding methods. This
encompasses the embedding of proprietary
information, such as identity and authentication
bitstrings, into the compressed material. This
watermark encoding scheme involves combining entropy
coding with homophonic coding, in order to embed a
watermark in a JPEG image.