Foreground layer includes text, line art and other thin, low-color elements.DjVu is used by many commercial and non-commercial web sites on the Web today.ĭjVu starts by segmenting a page into layers. By separating the text from the backgrounds, DjVu can keep the text at high resolution (thereby preserving the sharp edges and maximizing legibility), while at the same time compressing the backgrounds and pictures at lower resolution with a wavelet-based compression technique. Traditional image compression techniques are fine for simple photographs, but they drastically degrade sharp color transitions between adjacent highly contrasted areas - which is why they render type fonts so poorly. One of the main technologies behind DjVu is the ability to separate an image into a background layer (i.e., paper texture and pictures) and foreground layer (text and line drawings).
LIZARDTECH DJVU PDF
Its main characteristics is that the compress ratio is about 10x better than in PDF format at the same quality. DjVu viewers are available for web browsers, the desktop, and PDA devices. DjVu allows for the distribution on the Internet and on DVD of very high resolution images of scanned documents, digital documents, and photographs.
LIZARDTECH DJVU ARCHIVE
DjVu software enables businesses, publishers and creative professionals to easily exchange and efficiently archive complex color documents without compromising image quality or text legibility.ĭjVu (pronounced "déjà vu") is a digital image format with advanced compression technology and high performance value.
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