Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Getting the accurate hue - Well-defined colour reproduction from the scanning to the output on screens and printers

11.12.2007
Red remains red and grey remains grey, regardless of whether it is a paper printout or a screen output.

However, in reality it is often completely different: red becomes magenta or grey changes to yellow-grey. A properly defined colour reproduction may be often important for holiday pictures and photographs, it is however of special importance for the evidential value of documents.

In order to provide a remedy, DIN (German Institute for Standardization) and BAM together with users have developed the DIN 33866-1 to 6:2000 standard series for colour copiers, colour printers, colour scanners and colour screens. This has now been integrated into the international ISO/IEC standard documents.

A further development in this field is the draft of a new standard series DIN E 33872 Part 1 to Part 6 regarding relative colour reproduction, published this November. Parts 2 to 6 contain five test charts in pdf format which can be downloaded from the internet at http://www.ps.bam.de/33872E.

The output of four equivalent grey series can be tested using the test charts in Part 3 of the draft standard. The printout of a series of four grey tones defined by four corresponding definitions in the PostScript programme language, is supposed to produce four equal and visually equally spaced grey series. However, four unequal, differently spaced and sometimes chromatic grey series are often seen on many screens and in the printout of the grey test charts.

This is because modern connection sequences from scanning to reproduction reduce or enhance the colour steps and often let them distinguish completely. The test charts enable a visual assessment of the properties of the output devices printer and screen. Optional a colorimetric specification is also possible.

The questions about the visual output properties are on the last page of the test charts. Most users do not find it difficult to answer the questions. If the user is not satisfied, he can choose appropriate software for his operating system (Windows, Mac, Unix) which displays the four grey series of the pdf test files equal and equally spaced on the monitor or even print them on a black-and-white or colour printer. This is a great help for the user of the workstation as both screen and printer can be adjusted to produce the intended evidential output.

Information:
Prof. Dr. Klaus Richter
Division VIII.1 Measurement and Testing Technology; Sensors
Phone: +49 30 8104-1919
Email: klaus.richter@bam.de or klaus.richter@mac.com

Dr. Ulrike Rockland | idw
Further information:
http://www.bam.de
http://www.ps.bam.de/33872E

More articles from Materials Sciences:

nachricht Machine learning methods provide new insights into organic-inorganic interfaces
04.08.2020 | Technische Universität Graz

nachricht Unusual electron sharing found in cool crystal
31.07.2020 | Nagoya University

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: AI & single-cell genomics

New software predicts cell fate

Traditional single-cell sequencing methods help to reveal insights about cellular differences and functions - but they do this with static snapshots only...

Im Focus: TU Graz Researchers synthesize nanoparticles tailored for special applications

“Core-shell” clusters pave the way for new efficient nanomaterials that make catalysts, magnetic and laser sensors or measuring devices for detecting electromagnetic radiation more efficient.

Whether in innovative high-tech materials, more powerful computer chips, pharmaceuticals or in the field of renewable energies, nanoparticles – smallest...

Im Focus: Tailored light inspired by nature

An international research team with Prof. Cornelia Denz from the Institute of Applied Physics at the University of Münster develop for the first time light fields using caustics that do not change during propagation. With the new method, the physicists cleverly exploit light structures that can be seen in rainbows or when light is transmitted through drinking glasses.

Modern applications as high resolution microsopy or micro- or nanoscale material processing require customized laser beams that do not change during...

Im Focus: NYUAD astrophysicist investigates the possibility of life below the surface of Mars

  • A rover expected to explore below the surface of Mars in 2022 has the potential to provide more insights
  • The findings published in Scientific Reports, Springer Nature suggests the presence of traces of water on Mars, raising the question of the possibility of a life-supporting environment

Although no life has been detected on the Martian surface, a new study from astrophysicist and research scientist at the Center for Space Science at NYU Abu...

Im Focus: Manipulating non-magnetic atoms in a chromium halide enables tuning of magnetic properties

New approach creates synthetic layered magnets with unprecedented level of control over their magnetic properties

The magnetic properties of a chromium halide can be tuned by manipulating the non-magnetic atoms in the material, a team, led by Boston College researchers,...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

“Conference on Laser Polishing – LaP 2020”: The final touches for surfaces

23.07.2020 | Event News

Conference radar for cybersecurity

21.07.2020 | Event News

Contact Tracing Apps against COVID-19: German National Academy Leopoldina hosts international virtual panel discussion

07.07.2020 | Event News

 
Latest News

First radio detection of an extrasolar planetary system around a main-sequence star

04.08.2020 | Physics and Astronomy

The art of making tiny holes

04.08.2020 | Physics and Astronomy

Early Mars was covered in ice sheets, not flowing rivers

04.08.2020 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>