Data path design and image quality aspects of the next generation multifunctional printer

M. H. H. Brassé; S. P. R. C. de Smet

doi:10.1117/12.766794

28 January 2008 Data path design and image quality aspects of the next generation multifunctional printer

M. H. H. Brassé, S. P. R. C. de Smet

Proceedings Volume 6808, Image Quality and System Performance V; 68080V (2008) https://doi.org/10.1117/12.766794
Event: Electronic Imaging, 2008, San Jose, California, United States

Abstract

Multifunctional devices (MFDs) are increasingly used as a document hub. The MFD is used as a copier, scanner, printer, and it facilitates digital document distribution and sharing. This imposes new requirements on the design of the data path and its image processing. Various design aspects need to be taken into account, including system performance, features, image quality, and cost price. A good balance is required in order to develop a competitive MFD. A modular datapath architecture is presented that supports all the envisaged use cases. Besides copying, colour scanning is becoming an important use case of a modern MFD. The copy-path use case is described and it is shown how colour scanning can also be supported with a minimal adaptation to the architecture. The key idea is to convert the scanner data to an opponent colour space representation at the beginning of the image processing pipeline. The sub-sampling of chromatic information allows for the saving of scarce hardware resources without significant perceptual loss of quality. In particular, we have shown that functional FPGA modules from the copy application can also be used for the scan-to-file application. This makes the presented approach very cost-effective while complying with market conform image quality standards.

Citation Download Citation

M. H. H. Brassé and S. P. R. C. de Smet "Data path design and image quality aspects of the next generation multifunctional printer", Proc. SPIE 6808, Image Quality and System Performance V, 68080V (28 January 2008); https://doi.org/10.1117/12.766794

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