During the distortion process, any pixel can be moved randomly along both axes. Seed value for the random number generator. All options given above ignored in this case. All options given above ignored in this case. Most pictures have a very poor quality with factor 10 but some algorithm survive up to this point.
First component is the number of columns removed and the second component the number or rows.
These numbers are subject to change. The first command applies geometrical distortions and save the parameters into sample.param. The second command loads these parameters and use them to apply the same geometric distortions. Just JPEG compression. StirMark is a testing tool for watermarking systems that applies such distortions to images.