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					Test Targets: A Hands-on Approach to Teaching & Learning / Chung                                   1




                                          Test Targets
                    A Hands-on Approach to Teaching & Learning



                                        Robert Chung, R • I • T



                        The journey of studying process control and color
                           management in an ideal learning environment
                                                                                       Rev (062)




                                                                                  Test Targets
                                                                   A Hands-on Approach to T & L


                       Teaching Color Imaging
                         • Vendor supplied turn-key system is restrictive.
                             – Pair-wise color management
                             – Proprietary file format
                         • Vendor-neutral open system is modular.
                             – Common file format and color management architecture
                               (International Color Consortium)
                             – System integration is user driven.
                         • Curriculum update becomes the responsibility
                           of the educator.
Test Targets: A Hands-on Approach to Teaching & Learning / Chung                                              2




                                                                                               Test Targets
                                                                           A Hands-on Approach to T & L


                       What is a Test Target?
                         • Content
                             – Synthetic patches or pictorial images representing
                               known values, e.g., SCID
                         • Media
                             – Digital file, file format, display, and print
                         • Usage
                             – Used for process control, device characterization,
                               and process performance evaluation




                                                                                               Test Targets
                                                                           A Hands-on Approach to T & L


                       What is Test Targets?
                         • Annual publication
                             – Created and printed as a class project at RIT
                             – Using test targets, color measurement, and process control
                               to achieve repeatable color
                             – Demonstrating the use of color management to achieve
                               predictable color
                         • How to get hold of one?
                             – Hardcopy
                                  • Distributed free of charge at RIT while the supply lasts
                             – PDF
                                  • Free download from www.rit.edu/~gravure
Test Targets: A Hands-on Approach to Teaching & Learning / Chung                                  3




                                                                                  Test Targets
                                                                   A Hands-on Approach to T & L


                       Why Test Targets?
                         • A hands-on approach to teaching and
                           learning
                             – Balance between theory and practice
                         • Document what was done
                             – Promote scholarship of applications
                             – Learn process control and color management
                         • Help students get jobs
                             – Stay at the forefront of technology applications




                                                                                  Test Targets
                                                                   A Hands-on Approach to T & L


                       Test Targets Approaches
                         • As a group project in the Advanced
                           Color Management* course
                             –   Select a topic of interest
                             –   Conduct experiments
                             –   Perform measurement and data analysis
                             –   Document findings as a technical report
                             –   Review and edit
                             –   Printing and publishing


                            *Pre-requisite includes Color Management or
                            Tone & Color Analysis
Test Targets: A Hands-on Approach to Teaching & Learning / Chung                                                        4




                                                                                                         Test Targets
                                                                                     A Hands-on Approach to T & L


                       Test Targets Production
                         • Internally supported by the School of Print
                           Media
                             – It costs $10,000 to cover prepress, press, and Smythe-
                               sawn binding to produce 1,600 copies of Test Targets 5.0.
                             – Not including $5,000 paper costs
                         • Externally supported by consumable and
                           color management hardware & software
                           providers
                             – Paper donation (Sappi, Tembec)
                             – Color measurement instrument (X-Rite)
                             – Color management software (Alwan, ChroMix)




                                                                                                         Test Targets
                                                                                     A Hands-on Approach to T & L


                       Test Targets at a Glance
                         • Six issues were published since 2002.
                             – Multiple press runs were required for each issue.
                                   • Calibration & characterization | Color management testing | Production
                             – A variety of presses were studied.
                                                                                                       Cover Printed
                               Title of Publication   Date of Issue   No. of Pages   Body Printed by
                                                                                                            by
                                                                                         Indigo           Indigo
                                Test Targets 2.0       June 2002          34
                                                                                      UltraStream      UltraStream
                                                                                     Heidelberg   M-    Heidelberg
                                Test Targets 3.0      March 2003          40
                                                                                         1000B           sheetfed
                                                                                       Heidelberg       Heidelberg
                                Test Targets 3.1       June 2003          64
                                                                                      Sunday 2000        sheetfed
                                                                                       Heidelberg       Heidelberg
                                Test Targets 4.0       June 2024          80
                                                                                      Sunday 2000        sheetfed
                                                                                                        Heidelberg
                                Test Targets 5.0       Dec. 2005          80         Kodak NexPress
                                                                                                         sheetfed
                                                                                      Heidelberg &      Heidelberg
                                Test Targets 6.0       Nov. 2006          80
                                                                                       NexPress          sheetfed
Test Targets: A Hands-on Approach to Teaching & Learning / Chung                                  5




                                                                                  Test Targets
                                                                   A Hands-on Approach to T & L


                       Test Targets 2.0
                         •     Three Indigo (HP) press runs were
                               conducted.
                             1. Device calibration and profiling
                             2. Color management testing
                             3. Publication run




                                                                                  Test Targets
                                                                   A Hands-on Approach to T & L


                       Test Targets 2.0
                         • A collection of test forms
                             – TIFF or EPS
                             – Accompanied Excel templates are used to speed up measurement
                               and data analysis task.
Test Targets: A Hands-on Approach to Teaching & Learning / Chung                                  6




                                                                                  Test Targets
                                                                   A Hands-on Approach to T & L


                       Test Targets 3.0
                       • Printed by Heidelberg M-1000B web
                         offset
                           – Effect of lighting on digital camera profile
                           – Quantitative analysis of spot color matching




                                                                                  Test Targets
                                                                   A Hands-on Approach to T & L


                       Test Targets 3.1
                         • Printed by Goss Sunday 2000 web offset
                             – More formal documentation with in-depth discussion
                         • Embraced current research topics
                             – Effect of sample backing on accuracy of color measurement
                             – Role of image contents on objective image matching
Test Targets: A Hands-on Approach to Teaching & Learning / Chung                                  7




                                                                                  Test Targets
                                                                   A Hands-on Approach to T & L


                       Test Targets 4.0
                       • Cover printed by FM Hexachrome
                           – CMYK + Orange + Green
                       • Gallery of Visual Interest (GVI)
                           – Increase visual appeal of the publication
                           – Collect hard-to-find print samples




                                                                                  Test Targets
                                                                   A Hands-on Approach to T & L


                       Test Targets 5.0
                         • Continued to address current issues
                           faced by the industry
                             – PDF/X-1a workflow | Softproofing
                             – Link profiling | Effect of black point compensation
                         • Enlarged the GVI collection
Test Targets: A Hands-on Approach to Teaching & Learning / Chung                                  8




                                                                                  Test Targets
                                                                   A Hands-on Approach to T & L


                       Test Targets 6.0
                         • Body printed by
                           Heidelberg sheet-fed
                           offset and NexPress
                           2100 digital press
                         • Cover printed by
                           Heidelberg sheet-fed
                           offset press




                                                                                  Test Targets
                                                                   A Hands-on Approach to T & L


                       Test Targets 6.0
                         • Small group interactions with industry
                           experts on campus
                             – Steve Upton, Chromix
                             – Elie Khoury, Alwan
                             – Wandee Poolpol, Eckart
Test Targets: A Hands-on Approach to Teaching & Learning / Chung                                  9




                                                                                  Test Targets
                                                                   A Hands-on Approach to T & L


                       Test Targets 6.0
                         • Article published
                             – Fundamentals: Resolution and contrast
                             – Process control: Metallic color process control
                                                 Effect of dampening system
                             – Color management: Printer profile accuracy
                                                 Matching offset and digital color
                             – Workflow: Implementing PDF/X-3 in production
                             – Quality assurance: Traditional and digital printing
                               standard




                                                                                  Test Targets
                                                                   A Hands-on Approach to T & L


                       Test Targets 6.0
                         • Gallery of Visual Interest (GVI)
                             – ∆Eab vs. ∆E00 demo at 5 and 10 intervals
                             – Bit-depth demo
Test Targets: A Hands-on Approach to Teaching & Learning / Chung                                       10




                                                                                        Test Targets
                                                                        A Hands-on Approach to T & L


                       TT6 Gallery of Visual Interest
                         • Pictorial Color Reference Images
                         • Handling problem images




                                                                                        Test Targets
                                                                        A Hands-on Approach to T & L


                       What’s Next?
                         • Test Targets 7.0 challenges
                             – Who will be involved?
                                  • Recruit students, faculty, staff, and industry professionals
                             – What topics to investigate?
                                  •   Process control
                                  •   Color management
                                  •   Workflow management
                                  •   Technology standards
                             – How to finance the cost of production?
                                  • Looking for sponsorship?
                                  • Enlarge distribution?
Test Targets: A Hands-on Approach to Teaching & Learning / Chung                                  11




                                                                                  Test Targets
                                                                   A Hands-on Approach to T & L


                       Summary
                       •       Test Targets provides us with a
                               platform to learn by doing.
                           –    The message is about the science and technology of
                                print media.
                           –    A collaborative effort in exploring the use of scientific
                                methods for process control and color management.




                                                                                  Test Targets
                                                                   A Hands-on Approach to T & L


                       Summary
                       •       Device repeatability is key to enhanced
                               color management performance.
                           –    Printing is no longer a craft.
                           –    Printing is a science and technology based
                                manufacturing process.
                       •       Color management technology enables
                               color predictability and portability.
                           –    The “same document looks different” syndrome was
                                alleviated.

				
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posted:1/27/2013
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