Introduction - If you have any usage issues, please Google them yourself
When it comes to expressing ideas and conveying information, mankind has always preferred
concrete visual means (images, painting) to more abstract counterparts (written text). This is
evident from the antiquity of the former methods compared to the latter. The recent spate
of technological advances in handling digital data have further strengthened our dependence on
visual modes of communication. This can, for instance, be witnessed in the explosively growing
amount of digital image data, especially with the proliferation of the world wide web.