document: Watermarking techniques for electronic delivery of remote sensing images Earth observation missions have recently attracted a growing interest , mainly due to the large number of possible applications capable of exploiting remotely sensed data and images . Along with the increase of market potential , the need arises for the protection of the image products . Such a need is a very crucial one , because the Internet and other public/private networks have become preferred means of data exchange . A critical issue arising when dealing with digital image distribution is copyright protection . Such a problem has been largely addressed by resorting to watermarking technology . A question that obviously arises is whether the requirements imposed by remote sensing imagery are compatible with existing watermarking techniques . On the basis of these motivations , the contribution of this work is twofold : assessment of the requirements imposed by remote sensing applications on watermark-based copyright protection , and modification of two well-established digital watermarking techniques to meet such constraints . More specifically , the concept of near-lossless watermarking is introduced and two possible algorithms matching such a requirement are presented . Experimental results are shown to measure the impact of watermark introduction on a typical remote sensing application , i.e. , unsupervised image classification
doc_bio_tags: B I O B I O B I I B I I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B I I O B I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B I O O O O O O O O O O O O O O O O O O O O O O O O O O O B I O O O O O O O B I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B I I
extractive_keyphrases: remote sensing images electronic delivery watermarking techniques earth observation missions copyright protection digital image distribution unsupervised image classification
abstractive_keyphrases: digital watermarking near-lossless watermarking