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Program and Abstracts

BAM-DIN-Workshop on Image Technology

Efficient Scanning and Output on Displays and Printers
by ISO/IEC-, CEN- and DIN-test charts

BAM03

DIN02

For registration please use Registration_Form - alternative download Program-PDF and / or Registration

 

Taster_Pfeil-re-y28 Program    Taster_Pfeil-re-y29 Titles    Taster_Pfeil-re-y29 Experts    Taster_Pfeil-re-y29 Supported by

 

 


Titles

(in alphabetical order) for full text please click on arrows before title.

Taster_Pfeil-re-y11 3D-visualisation ... for volume rendering
Taster_Pfeil-re-y12 Auto adaptive contrast optimization ...
Taster_Pfeil-re-y13 Colour Management and need to solve problems ...
Taster_Pfeil-re-y14 Colour Management which maintains CIELAB ...
Taster_Pfeil-re-y15 Colour requirements for display technologies ...
Taster_Pfeil-re-y16 Digital ... Synchronized image viewing
Taster_Pfeil-re-y17 Human perception of images
Taster_Pfeil-re-y18 Improved visual and material efficiency for ... output
Taster_Pfeil-re-y19 Monitor and software requirements for comparison ...

Taster_Pfeil-re-y20 Multispectral CIELAB camera ...
Taster_Pfeil-re-y21 Production method for analog ISO/IEC-test charts
Taster_Pfeil-re-y22 Properties and application of ISO/IEC-test charts ...
Taster_Pfeil-re-y23 Remanufacturing of toner cartridges ...
Taster_Pfeil-re-y24 Requirements for Film Digitization and Printing ...
Taster_Pfeil-re-y25 Selection of industrial displays ...
Taster_Pfeil-re-y26 Testing the emission from printers ...
Taster_Pfeil-re-y27 Visual Performance of TFT-LCDs
Taster_Pfeil-re-y27 Wide Gamut LCD monitor for Softproof

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Experts (in alphabetical order)

 


Supported by the following scientific societies, institutions and companys (in alphabetical order)
  • Alekseychuk, O.
  • Bauer, Michael
  • Bavendiek, Klaus
  • Collong, Armin
  • Druemmer, Olaf
  • Ewert, Uwe
  • Hortig, Peter
  • Jaeger, Stefan
  • Jann, Oliver
  • Neumeier, Juergen
  • Osterloh, Kurt
  • Richter, Klaus
  • Rockstroh, Jens
  • Scheuer, Stephan
  • Schmelzer, J. Thomas
  • Scholz, Oliver
  • Turowski, Thomas
  • Uhrmann, Franz
  • Wagenknecht, Hans
  • Wilke, Olaf
  • Yamaguchi, Shoichi
  • Zscherpel, Uwe

 

  • Autronic-MELCHERS GmbH, Karlsruhe
  • BAM, Berlin
  • Callas Software, Berlin
  • Deutsches Farbenzentrum e. V.
  • Deutsche Gesellschaft für zerstörungsfreie Prüfung e.V.
  • Deutsche Farbwissenschaftliche Gesellschaft e. V.
  • EIZO NANAO CORPORATION (JP)
  • Embatex AG, Feldkirchen, Austria
  • EPSON, Deutschland
  • Fraunhofer Institute, Fuerth
  • Lasersoft Imaging AG, Kiel
  • SWS Software Support, Goeppingen
  • TUB Technische Universität Berlin, Bereich Lichttechnik
  • Technische Universität Berlin, Fachgeb. Lichttechnik Fakult.IV
  • TÜV Rheinland Group, Koeln
  • Universität Erlangen, Abt. Computer Science 9 (Graphics)
  • Volkswagen AG, Wolfsburg
  • Yxlon International X-Ray GmbH, Hamburg

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Program / BAM-DIN-Workshop on Image Technology

April 18
 



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April 19
 

13.00-15.00h Welcome and First paper session

 

Welcome
by J. Thomas Schmelzer (DE) and Prof. Dr. M. Hennecke, President of BAM

  • Selection of industrial displays for X-Ray images in non-destructive testing
  • Klaus Bavendiek, Yxlon International X-Ray GmbH, Hamburg
  • Requirements for Film Digitization and Printing in Radiographic Non-Destructive Testing (NDT)
  • Uwe Ewert, Uwe Zscherpel, BAM, Berlin
  • Monitor and software requirements for comparison of digital radiographs and catalogues
  • Uwe Zscherpel, O. Alekseychuk, U. Ewert, BAM Berlin

15.00-16.00h First Poster session: Posters of authors and many additional posters

 

16.00-17.30h Second Paper session

  • Human perception of images
  • Kurt Osterloh, BAM Berlin
  • Auto adaptive contrast optimization in medical imaging technologies
  • Thomas Turowski, Lasersoft Imaging AG, Kiel
  • 3D-visualisation component utilizing the graphics adapter as co-processor for volume rendering
  • Franz Uhrmann, Oliver Scholz, Michael Bauer, Fraunhofer Institute, Fuerth

17.30-19.00h Second Poster session and Welcome Reception

 

 

Special:

20.00-21.00h Colour and Colour Vision - Description of Experiments in the Science of Color


A separate print (70 colour figures, 23 pages) will be available in english or german for every visitor

 

Guided tour through this Exhibition at Technical University of Berlin, Institute of Lighting Technology, Technical University, Einsteinufer 19, 10587 Berlin, Building E

9.00-10.30h Third Paper session:

 

  • Improved visual and material efficiency for output in image technology by colorimetric methods
  • Klaus Richter, BAM, Berlin (DE)
  • Properties and application of ISO/IEC-test charts according to ISO/IEC 15775 and corresponding DIN-test charts according to DIN 33866-1 to -5
  • Thomas Schmelzer, SWS Software Support, Goeppingen (DE)
  • Remanufacturing of toner cartridges - Present steps and Development of European CEN Standards
  • Peter Hortig, Embatex AG, Feldkirchen, Austria

10.30-11.30h Third Poster session: Posters of many authors and many additional posters

 

11.30-13.00h 4th Paper session:

  • Colour Management Method (CMM) which maintains CIELAB hue and relative lightness and chroma for analog and digital ISO/IEC-test charts
  • Hans Wagenknecht, BAM and LaserSoft Imaging AG, Kiel (DE)
  • Multispectral CIELAB camera for the evaluation of colored automobile coatings
  • Stefan Jaeger, BAM and Volkswagen AG, Wolfsburg (DE)
  • Wide Gamut LCD monitor for Softproof
  • Shoichi Yamaguchi, Armin Collong, EIZO NANAO CORPORATION (JP)
  • Testing the emission from printers by means of test chambers
  • Olaf Wilke, Oliver Jann, Jens Rockstroh, BAM, Berlin (DE)

13.00-14.00h Lunch time

 

14.00-15.30h 5th Paper session:

  • Colour Management and need for more standards to solve problems for device output and print
  • Olaf Druemmer, Callas Software, Berlin (DE)
  • Visual Performance of TFT-LCDs
  • Juergen Neumeier, Autronic-MELCHERS GmbH, Karlsruhe (DE)
  • Colour requirements for different display technologies in ISO standards
  • Stephan Scheuer, TV Rheinland Group, Koeln (DE)

15.30-16.15h 4th Poster session: Posters of many authors and many additional posters

 

16.15-17.15h Plenary discussion:

    BAM-DIN-Workshop on Image Technology

  • Relationship between Radiological and Colorimetric Image Technology
  • Discussion leader: Thomas Schmelzer (DE)
    Discussion members: all participants and experts
    Ewert, Zscherpel, Bavendiek, Richter, Hortig, Turowski, Scheuer

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Abstracts / BAM-DIN-Workshop on Image Technology

 

  • Selection of industrial displays for X-Ray images in non-destructive testing
  • Klaus Bavendiek, Yxlon International X-Ray GmbH, Hamburg
  • X-Ray images in non-destructive testing (NDT) are characterized by a high dynamic range, detailed information especially in dark areas, high sharpness and contrast resolution. They are very large, because digital detectors may have 7 Megapixel and more. Displaying theses images needs large high end monitors with high brightness to blacklevel range. When the monitors are used in visual inspection they have to be even faster than TV monitors, otherwise flicker and distortions will avoid that humans will work with that displays. To get optimal display quality, a monitor test tool based on SMTPE RP133 will be presented.

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  • Requirements for Film Digitization and Printing in Radiographic Non-Destructive Testing (NDT)
  • Uwe Ewert, Uwe Zscherpel, BAM, Berlin
  • Digitization of paper documents is a wide spread technology and inexpensive scanners are available. The digitization of transparent images needs special scanning devices with stabilised light source and scanning detectors. For scanning of X-ray films no colour scanning is needed. These are the reasons for the very special and expensive design of X-ray film scanners. Medical and NDT scanning devices have to consider the different properties of X-ray films for medicine and NDT. Most applications of NDT technique require scanning within a range of optical density from 1 up to about 4.5 and a spatial film resolution between 30 μm (edge unsharpness at 100 kV with Klasens method, see ASTM E 1000) and 70μm. This excludes most medical scanners for NDT applications.
    The European standard EN 14096 defines the minimum requirements for archiving and image processing. The same image quality is expected when NDT films shall be printed. Most medical dry printers have restrictions in the max. optical density, bit-resolution and spatial resolution. Laser exposure of single sided films and its wet development require a special quality assurance procedure to obtain the required quality and reproducibility.

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  • Monitor and software requirements for comparison of digital radiographs and catalogues
  • Uwe Zscherpel, O. Alekseychuk, Uwe Ewert, BAM Berlin
  • Since decades the evaluation and classification of flaw indications on radiographs in industry have been done by side-by side comparison with reference radiographs from a suitable catalogue on light boxes. With the increasing usage of digital detectors in industrial radiography more and more images are displayed on monitors. Therefore, films are no longer available for light box viewing. The comparison of images on monitors and catalogue films on light boxes is not adequate and can produce incorrect evaluation or classification results. Viewing of X-ray images on monitors requires high dynamic range and grey scale resolution. The special need for coupled image viewers requires the synchronisation of several image processing tools. The developed approach for correct comparison of a acquired image and a reference image will be presented. Image processing and software features, which are a prerequisite for successfully comparison, are discussed.

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  • Human perception of images
  • Kurt Osterloh, BAM Berlin
  • Pictures and digital images usually contain more information than perceivable by the human vision. As a consequence, the really visible amount of all available information has carefully to be selected in order to match with the physiological limits and to comply with the desired essentials. The appropriate illumination of a picture may be comparable to suitable monitor settings or even to the adequate processing of digital image information. On the physiological side, not all image details generated within the retina are passed to the final visual impression – otherwise the brain might collapse because of informational inundation. So physiological image processing starts in the retina of the eye and is continued in the thalamus and in the various cortical regions. Interpretation is followed deeper in the brain rather independently from the image processing in the previous instances. However, parallel structures exist to adapt the visual focus to external points of interest, i.e. attracting our attention. Meaningful digital image processing should reduce information down to a manageable but nevertheless comprehensive amount allowing perceiving its content.

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  • Auto adaptive contrast optimization in medical imaging technologies
  • Thomas Turowski, Lasersoft Imaging AG, Kiel
  • SilverFasts AACO is an excellent tool for visualization of dark areas in high-contrast images such as radiological images. Shadow appearance regarding luminosity can be adjusted, so that significant details become clearly visible, without affecting any highlights of the image. Because of the comfortable user interface of this complex function it can easily be used by imaging-inexperienced users.

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  • 3D-visualisation component utilizing the graphics adapter as co-processor for volume rendering
  • Franz Uhrmann, Oliver Scholz, Michael Bauer, Fraunhofer Institute, Frth (DE)
  • This paper presents a modular visualization component which generates 3Dviews of computer tomography (CT) scans in real-time. By delegating the 3D-rendering process to the powerful graphics processor present on current graphics adapters, the CPU is relieved of time consuming 3D-calculations and can simultaneously process other tasks, e.g. reconstruction of the next CT-volume. The data can be displayed in various 2D- or 3D-modes, with optional overlays allowing e.g. excellent visualisation of material defects. By encapsulating the component in an ActiveX-control, it can easily be integrated into existing Windows-based systems, and it becomes possible to embed interactive 3D-volumes in web-pages, presentations and other documents.

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  • Improved visual and material efficiency for colour output in image technology by colorimetric methods
  • Klaus Richter, BAM, Berlin (DE)
  • Different ISO/IEC standards and technical reports define analog and digital ISO/IEC-test charts for different applications such as colour copiers, printers, scanners, monitors and projection screens. Corresponding ISO/IECtest charts include 16 step colour scales which are visually equally spaced and show equal distances in the CIELAB colour space. On any colour output device high visual efficiency is reached if the 16 steps appear equally spaced. In this case the ISO/IEC-Landolt-rings are recognized in the shadow, the mean and the high light areas. Additionally for colour printers high efficiency is reached if the output uses as much as possible black ink. The material efficiency is low if the grey colours are printed by three chromatic colours on top of each other. The price for the black ink is often one third compared to the chromatic ink. Therefore the costs per page may be reduced by a factor nine. The colorimetric methods for high visual and material efficiency are described.

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  • Properties and application of ISO/IEC-test charts according to ISO/IEC 15775 and corresponding DIN-test charts according to DIN 33866-1 to -5
  • Thomas Schmelzer, SWS Software Support, Goeppingen (DE)
  • ISO/IEC 15775, Admnt1:2005 and DIN 33866-1 to -5 use digital and analog test charts to control input, color description, separation and printer output. The respective standards committees ISO/IEC SC28 - DIN NI-28 work in the area of cameras, scanners and printers and are backed up by relevant manufacturers in this area.
    The test chart is photographed, scanned, copied or printed and the result is compared with the printed original of the standard. Mainly it is used to identify the behaviour of a device in combination with certain templates, substrates or consumables. The standard itself and samples produced in different ways will show and explain the use of the standard. ISO/IEC 15775, Admnt1:2005 and DIN 33866-1 to -5 are part of the few standards that are internationally agreed on by manufacturers and user groups.

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  • Remanufacturing of toner cartridges - Present steps in the Development of European CEN Standards
  • Peter Hortig, Embatex AG, Feldkirchen, Austria
  • The standards DIN 33870:2001 and 33870-1:2003 define the specification of the relative yield, the relative reproduction properties and health requirements for black and white toner and colour inkjet printers. Both DIN standards, which include different free achromatic and chromatic test charts on the BAM-server www.ps.bam.de, are the starting point for the development of several European Standards in this area. At first a few and after one year now about 30 experts of 10 European countries are involved. The technical problems and the different steps to reach consensus are described. It seems not possible to include in the European CEN standards the comparison of relative reproduction properties of the remanufactured and the cartridge of the original manufacturer (OEM). The standard ISO/IEC 19752:2004 for achromatic toner printers will be used for the specification of yield. Several test charts to evaluate the minimum reproduction and other properties are shown and discussed.

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  • Colour Management Method (CMM) which maintains CIELAB hue and relative lightness and chroma for analog and digital ISO/IEC-test charts
  • Hans Wagenknecht, BAM and LaserSoft Imaging AG, Kiel (DE)
  • As colour order system the Ostwald and the Natural Colour System (NCS) use a three dimensional double cone with a circular base. For the Colour Management Method (CMM) presented here the colorimetric coordinates tab* (relative triangle lightness, red-green and yellow-blue chromaticness) are used. Test charts with unspecified rgb or cmyk colour data produce device dependent CIELAB output data. The CMM intends to reproduce colours defined by CIELAB data for example colours of equal hue. The defined olv* (rgb) and cmyn* (cmyk) data which have a linear relationship to CIELAB are used for the CMM. These coordinates and/or CIELAB coordinates are transformed to the coordinates of the colour double cone which is used as a Natural Colour Connection Space (NCCS) between any input and output device space.

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  • Multispectral CIELAB camera for the evaluation of colored automobile coatings
  • Stefan Jaeger, BAM and Volkswagen AG, Wolfsburg (DE)
  • ISO/IEC JTC1/SC28 "Office Systems has studied the input and output data of ISO/IEC-test charts defined for example in the device coordinates cmyk*.
    CIELAB cameras produce the device independent coordinates LAB* for a whole scene. The multi spectral camera consists of a high resolution black and white camera and a liquid crystal tunable filter. This device measures the spectral reflectance of ISO/IEC-test charts and the automotive paints at up to 33 wavelength in the visible range between 400 nm and 720 nm. The CIELAB data are calculated for any pixel of the image. For the visualization of these LAB* data different methods are possible. This presentation will introduce to different methods for spectral reconstruction and their performance regarding spectral and colorimetric accuracy with the equipment used.

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  • Wide Gamut LCD monitor for Softproof
  • Shoichi Yamaguchi, Armin Collong, EIZO NANAO CORPORATION (JP)
  • The development of the digital workflow and color management in the printing industry means the color reproduction on the monitor is more important than before. Furthermore, CRT monitors are being gradually replaced by specially designed LCD monitors.
    It has been proven that precisely calibrated LCD monitors can provide reasonably accurate reproduction of print colors on the screen. This has created the expectation from the industry for the so-called "softproof." We have been working on this issue and concluded that to improve color accuracy we need a wide gamut on the LCD monitor, wider compared to the sRGB gamut of typical monitors. When comparing the gamut of a printed proof with that of an sRGB monitor, saturated green, cyan and yellow are out of the monitors gamut. With a color management system, those colors are displayed on the monitor with the nearest available colors. Considering the increasing demand from the photo industry, Adobe RGB gamut seem to be the most reasonable target for a wider gamut LCD monitor for both printing and photography. The first LCD monitor with Adobe RGB gamut was released to the market in November 2004

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  • Testing the emission from printers by means of test chambers
  • Olaf Wilke, Oliver Jann, Jens Rockstroh, BAM, Berlin (DE)
  • A new method was developed for the German environmental label "Blue Angel to test printers, copiers and multifunctional devices regarding the emissions of volatile organic compounds (VOC), ozone and dust. These emissions have an influence on the indoor air quality and therefore limitations are necessary to protect the indoor environment. The test is carried out in emission test chambers under controlled conditions (climate, air exchange, paper) to get comparable and reproducible results.
    Main sources for VOC-emissions are toner and ink but there also are emissions from the materials used for building the devices. Printer patterns were defined for monochrome and colour printing, because emissions from toner and ink depend on paper coverage and used toner amount.
    The "Blue Angel plays an important role for the producers of printing devices around the world (especially USA and Japan), because it is their aim to fulfil this environmental label.

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  • Colour Management and need for more standards to solve problems for device output and print
  • Olaf Druemmer, Callas Software, Berlin (DE)
  • Color management is getting more and more widely used for print as well as non-print documents. Print production though - whether on ink jet or color laser printers, digital printing presses or on a conventional printing press - often confronts users with stumbling blocks: black text is rendered using a mix of all CMYK components and looks brownish and fuzzy, colored vector objects appear speckled, tint values of device colors appear darker or lighter than expected, or spot colors (e.g. when used in duotone images) substantially change their appearance due to conversion to CMYK typical for output on a digital press.
    Reasons for these issues are conceptual discrepancies between colorimetric color management and device specific color values, gaps in standardisation of print processes and proof printing (cf. ISO 12647) as well as deficiencies in currently available color models mainly in PostScript and PDF. To a certain degree recent standards like PDF/X (ISO 15930) and PDF/A (ISO/DIS 19005) can help to overcome these issues, in several areas though it may be necessary to extend current ISO standards as well as the PostScript and PDF specificiation.This paper elaborates the above mentioned weaknesses, discusses their relevance within and beyond the graphic arts industry and proposes possible solutions.

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  • Visual Performance of TFT-LCDs
  • Juergen Neumeier and Juergen Lauer, Autronic-MELCHERS GmbH, Karlsruhe (DE)
  • TFT-LCDs became the dominant display technology for all kinds of visual display applications. In the past, limited visual performance of flat panel displays (FPD) was widely accepted since most applications contained only simple black-white content. New applications like multimedia PCs including image and video processing or LCD-TV require high quality video images, thus the demand for displays with superior image quality increased. The specification of TFT-LCDs did not keep pace with the increased demand of the visual performance. This makes it very difficult for application engineers to select an appropriate display by the manufacturers specification. This paper will give an overview about the measures and characteristics of TFT-LCDs which define the visual performance in a meaningful way for the end user. It will be shown that viewing angle definition based on contrast values is not sufficient. Further on, a discussion of the switching and response characteristic of TFT-LCDs will explain why even extremely short response time will not result in an artefact free moving image.

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  • Colour requirements for different display technologies in ISO standards
  • Stephan Scheuer, TÜV Rheinland Group, Koeln (DE)
  • A new standard series ISO 9241- 301 to 307 for display requirements is in the standardization process. Many properties of displays for different applications with regard to colour will be shown and discussed.

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  • Digital radiological Reference Images for Castings; ASTNE155 - Synchronized image viewing
  • O. Alekseychuk, Uwe Zscherpel, O. Alekseychuk, Uwe Ewert, BAM, Berlin (DE)
  • Dr. Uwe Zscherpel, BAM VIII.35, Working Group: Digital Radiology and Image Analysis
    additional poster

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  • Production method for analog ISO/IEC-test charts according to ISO/IEC 15775
  • Jens Witt, BAM, Berlin (DE)
  • The ISO/IEC 15575 standard for colour copiers was issued by ISO/IEC JTC1/SC28 Office Systems in December 1999. The Japan Business Machine and Information System Industries Association (JBMIA) published test charts compliant to these standard described in ISO/IEC 15775:1999/FDAmd 1:2005. This paper compares the accuracy of different printer calibration methods. Also it shows a method, how high accuracy for ISO/IEC-test charts in reflection and transmission mode can be reached. The method uses a CIELAB camera to measure a complete test chart in 2 minutes. Different ISO/IEC-test charts produced with this method will be available by BAM VIII.34 during this year.
    Jens Witt, BAM VIII.34, Working Group: Visual Methods and Image Reproduction
    additional poster

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