You may retrieve them using anonymous ftp and experiment with them for free. Some of the software is shareware, and the author expects some small compensation if you like the software and continue to use it. Sources for image viewing software for major platforms will be found later in the article. Hardware Workstations such as those from Sun Microsystems or Silicon Graphics were developed with advanced graphical uses in mind. Monitor screens should be at least 15 inches, and graphics hardware may be helpful or necessary.
Image analysis can be slow even on very fast computers.
Typical Image Sizes and Network Bandwidth Images seen on the Internet can range in size from hundreds to millions of bytes. A four-megabyte file is not uncommon. Internet connections can be characterized by the bandwidth of the connection. Typical bandwidths are 9.6, 14.4, and 56 kilobaud. Major nodes may have one megabaud connections or better.