By design, DjVu preserves the visual fidelity of documents while reducing their file size significantly more than any other compression technology. Only DjVu technology addresses both issues. However, quality usually decreases along with file size to the point that the usefulness of the compressed document is severely reduced.
#Djvulibre or windjview download
Conversely, there are several ways to compress a digital document such that it becomes small enough to send and download relatively quickly (classical JPEG, for example). The resulting file is typically too large to transfer and use efficiently over networks. There are several ways to digitally encode an existing document so that its visual quality is preserved in digital form (TIFF and PDF, for example). DjVu offers a means not only of preserving documents, but also making them truly accessible and usable across and throughout the digital world regardless of available bandwidth or the origin, complexity or size of the originals.įile size and image quality are the perennially opposing forces in digital documents. It relies on advanced content analysis techniques to segment a scanned color page into layers and achieve high compression ratios, low memory utilization, extremely fast rendering on screen and indexing of the material. DjVu uses a mixed raster content (MRC) imaging model, an approach consistent with that endorsed by the International Telecommunications Union (ITU). DjVu is specifically designed to enable the creation of digital libraries of high-visual-quality documents (either scanned from paper or produced in other digital formats).ĭjVu (pronounced “day・zha・voo”) is a compression technique, a file format, and a platform for delivering information in the form of color-rich documents. Document Express products are powered by DjVu, a technology developed in the late 1990s by a team of researchers at AT&T Labs.
0 kommentar(er)
