Abstract
In this paper, different types of image watermarking
techniques, the embedding of data or copyright information
into the data file, are investigated. Three image watermarking
techniques are discussed, namely: least significant bit, least
significant bit and discrete cosine transform combined, and discrete
cosine transform and discrete wavelet transform combined.
These embedded watermarking techniques are evaluated on how
robust each technique is under image manipulations. Simulations
are done using the three image watermarking techniques to
determine the effects on how well the embedded watermarking
technique resists manipulations...