Wrkflw Wrking Grup June 19, 2007 Chiba University Ann McCarthy Lexmark Internatinal Inc. Chair, Wrkflw Wrking Grup presented by: William Li
Wrkflw WG Charter T identify a small number f the mst cmmnly used wrkflws T recmmend effective ways fr applicatins t use ICC prfiles T recmmend imprvements t the specificatin, r implied architecture, in rder t make the wrkflws mre efficient T identify where predictability and cnsistency are required in wrkflws and insure that the ICC recmmendatins enable them T recmmend what prcedures are required t ensure ease f use with the recmmendatins made T identify any liaisn relatinships that need t be established
ICC Wrkflw WG Intrductin An ICC wrkflw is The sequence f clr encding and clr transfrmatin steps used t prcess digital clr infrmatin frm input t utput In the ICC we understand that ICC prfiles are used by many different kinds f users in many different wrkflws
CC Wrkflw WG Activities Develp wrkflw semantic mdels Understand the cmmn needs f different kinds f users and wrkflws Entry pint fr ICC invlvement in specific wrkflw issues and needs f users in particular markets Spawns specific wrking grups when unique user needs are realized E.g., Digital Phtgraphy WG and Digital Cinema WG frmed ut f initial Wrkflw WG activities in recent years
ICC Wrkflw WG Mdels Clr Cntrl Factrs Mdel Describes the elements in any wrkflw that cntribute t clr management quality User Expectatin Mdel Mdels the tradeff between user cntrl and ease f use Wrkflw Functinal Primitives An icnic representatin f wrkflw elements Used t represent different kinds f wrkflws using a cmmn set f wrkflw functinal primitives Makes use f the Image State Mdel in ISO 22028-1 Wrkflw Dimensins and Patterns Mdels the influences imprtant in ICC wrkflw design
Current Prjects Print Cnditin Tag additin t ICC Prfile Specificatin Primary gal is t imprve prfile ease f use by assisting r fully autmating printer prfile selectin» Ideally the user selects paper and printer settings» Prfile is selected autmatically [in the print path sftware] based n matching these settings t attributes in the prfiles Specific print cnditin attributes identify paper and printer settings fr which the prfile is built Attributes are encded in the prfile t ensure traceability ICC Usability and Applicatin Cnsistency in Multi-Vendr Envirnments prject Initiated in Fall 2006 COMMON USER TERMINOLOGY sub team frmed t wrk n standard terminlgy fr ICC related CM user interactins
ICC Wrkflw WG Mdels
lr Cntrl Factrs Mdel A partitining f clr management prcesses that cntrl clr results Explicitly via purpseful cntrl Implicitly via lack f cntrl These 7 clr cntrl factrs can be examined in any digital clr system Fr types f users, regins f the wrld, markets Visualizatin Fr each device Device Calibratin Characterizatin Clr Aim Definitin Understanding human visual clr preferences Cntrlling and mdeling the device Fitting human visual clr preferences int the capability f the particular device
lr Cntrl Factrs Mdel A partitining f clr management prcesses that cntrl clr results Explicitly via purpseful cntrl Implicitly via lack f cntrl These 7 clr cntrl factrs can be examined in any digital clr system Fr types f users, regins f the wrld, markets Visualizatin Fr each device Device Calibratin Characterizatin Clr Aim Definitin Fr the system Cmmunicatin Interpretatin Cnversin Cmmunicatin f clr cntent & metadata between system cmpnents Interpretatin f surce clrs Cnversin f the surce clrs t the selected target representatin
ser Expectatin Mdel: Three dimensins f clr management cmplexity Expert What des the user want t understand and cntrl? Initial Image State (clr image encding) Pre-set Invisible Cntrl Distinct Clrs Clrimetry Match Hw much d yu knw abut the surce? Original Scan Captured Scene Appearance Match Actual Display/Print Reference Display/Print Is the utput intended t be pleasing, measurement matched, appearance matched? Pleasing Adaptatin Cnversin Aim
ser Expectatin Mdel: Three dimensins f clr management cmplexity Expert Pre-set expert phtgrapher example Initial Image State (clr image encding) Actual Display/Print Reference Display/Print Invisible Cntrl Distinct Clrs Clrimetry Match Original Scan Captured Scene Appearance Match Pleasing Adaptatin Cnversin Aim
Wrkflw Functinal Primitives nsider sequences image states user functins cntent frmats jb cntrl transfrm intent Clr Cnvert Visualize Visualize Visualize Clr Cnvert Clr Cnvert Capture Clr Cnvert Capture riginals and Clr-Render t Wide Gamut Standard RGB Adjust Adjust RGB bjects Visualize sftcpy Iterate Assemble Create layut Select bjects Nrmalize frmats Cmbine bjects Sftprf layut Cnfigure jb Print first prfs & adjusted prfs Print prductin Iterate
rkflw Functinal Primitives Differentiated accrding t clr management rle Clr Cnvert Adjust Capture Visualize Assemble
rkflw Dimensins and Patterns What cmprises a unique wrkflw and what differentiates ne frm anther? Use cases can tell us at a high level what a user wants t accmplish The next level f wrkflw detail is needed in rder t derive clr management requirements
r example: Is capture being dne by a creative expert user r by a dcument prductin wrker? Digitized fr a single use? Fr pen-ended use? Is adjustment intended t imprve the match t the riginal? Or intended fr artistic effect? Is the print intended t match the riginal? T be an enhancement? Defaulted t a generic lk and feel? Targeted t a special viewing envirnment?
rkflw Dimensins and Patterns Image state Image encding Wrkflw step Functin allcatin Cntent cntrl wner User invlvement Cnversin intent Cnversin methd Mechanical state Defined cntent hierarchy Attributes f each cntent element Attributes f the physical wrkflw system Attributes f varius users Variables in the cnversin prcess Cmplex attributes f the cntent dealing with cntent relatinships hese dimensin mdels build n the previus mdels
Thank Yu Additinal detail has been published n the ICC website [http://www.clr.rg/inf_prfiles2.html] and in IS&T EI2006 Image Quality and System Perfrmance III, 6059-18