Using NCSA Mosaic, where the environment is interactive, and the information should flow, delivery must be reasonably quick. Of course the answer depends on who the end user is, what they're image quality requirements are, and what they are accustomed to in terms of transfer time. As the distributor of the digital image, there is usually not much you can do to improve an end user's network connection. These factors can be adjusted to varying degrees, and combinations, in order to find the most appropriate compromise between transmission time and image quality. To reduce the time it takes to transfer bitmapped images across networks while preserving the required level of image quality.
Objectives Provide an image that meets the quality requirements of all parties.
Reduce the amount of image data as much as possible. The purpose of this section is to provide you with a general understanding of the issues related to image data. It will not provide you with explicit directions on how to use specific software to reduce image data. It will provide you with a road map of the pertinent techniques so that you have a sense of direction when you begin working with images in your software application of choice. Once the image quality requirements of the various parties have been determined, image data reduction can be pursued.