Network image server

摘要

An image server provides several displayed image resolution. Original image (28) is scanned at high resolution. This high resolution image is divided into rectangular image tiles (35) each of the same resolution. A degree of overlap between adjacent tiles (35) can be arbitrarily get during input image processing. An imageID of each image tile (35) is stored in a relational database. The imageID is a unique identifier for the file name of the associated file. Each tile (35) is stored as graphics format The graphics file is an image file which is stored externally of the database. Tiles, graphics file and database entries for each tile are created for each level of image resolution. Tiles for each successive resolution level are generated from tiles of previous higher resolution level or from the original (highest resolution) by dividing up the highest resolution image into tiles and 're-sampling' each of those tiles at a lower resolution.