The Next-Generation Format For Imaging

The TWAIN Working Group (TWG) and the PDF Association, both not-for-profit organizations designed to foster universal public standards, today announced the joint publication of PDF/raster 1.0, a subset of the PDF specification suited to the needs of resource-constrained imaging systems.

PDF/raster is a strict subset of the PDF file format. It was designed for storing, transporting and exchanging multi-page raster-image documents, especially scanned documents. PDF/raster provides the portability of PDF while offering the core functionality and support of TIFF. Bitonal, grayscale and RGB images. Compression options include JPEG, lossless CCITT Group 4 Fax and uncompressed.

PDF/raster was created via a collaboration between the TWAIN Working Group, which originated the PDF/raster concept, and the PDF Association, which provided PDF technology expertise and perspective as well as means of communicating with the PDF software industry to ensure a diverse range of relevant viewpoints was represented. PDF/raster is part of the TWAIN Working Group’s new TWAIN Direct specification — the first zero-footprint, cloud-based version of its royalty free open standard protocol that allows applications to talk directly to document scanners without the need for vendor specific drivers. PDF/raster provides image-only file format guidelines that can be implemented across a wide range of scanners. It is designed to be efficient to implement on any scanner, to be easy to parse by applications, and to be 100% compatible with PDF and PDF-consuming applications.

“Working with the experts from the PDF Association ensured the standard would be a proper subset, achieve our compatibility goals and avoid common mistakes,” said Jon Harju, CTO of Visioneer and the TWAIN Working Group’s Chair and lead on the project. “We have now developed a new PDF subset specifically for imaging devices, and it is the file format required by our new TWAIN Direct specification. Working with the PDF Association on this project was an amazing experience and allowed us to turn out a solid PDF/raster specification for adoption in the imaging market.”

“We’re very pleased to have worked with the TWAIN Working Group on this project,” said Olaf Drümmer, the PDF…

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