Color Management Imagination meets Reality

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June Morton
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1 Color Management Imagination meets Reality

2 Memorize the color difference of the two patches! 2 Color Management, Th. Dauser, BYK Usermeeting, Alicante Oct. 2011

3 Imagination The car should look as if all parts were painted together. The color travel should be harmonic. 3 Color Management, Th. Dauser, BYK Usermeeting, Alicante Oct. 2011

4 Reality Numerous add-on-parts Different substrates Different suppliers Different basecoat materials Different clearcoat materials Different layers Different applications Bumpers All sorts of covers Door handles Mirror housings Spoilers Moldings Fuel flaps Fenders Tailgates 4 Color Management, Th. Dauser, BYK Usermeeting, Alicante Oct. 2011

5 Imagination Just have someone who s checking in the assembly! Putting paint onto these parts can t be so difficult! My grandma can handle this in her garage! Saying of a former production manager. 5 Color Management, Th. Dauser, BYK Usermeeting, Alicante Oct. 2011

6 Reality Harmony matching Reference matching Assessing color differences in the assembly means Assessing the difference between the bumper and the fender. How well it meets the reference is absolutely uninteresting. Assessing color in the lab means Assessing the difference between a part and a color standard. Whether two parts harmonize in color in the assembly is reading in a glass sphere. We know many cases where a certain color difference between two parts is accepted. If similar differences come together where three parts meet, it is inacceptable. 6 Titel oder Name, Abteilung, Datum

7 Reality - Integration of add-on-parts Quelle: Wikipedia 7 Color Management, Th. Dauser, BYK Usermeeting, Alicante Oct. 2011

8 Reaction time on color Reality Reaction delay Production Storage Paintshop Assembly Stock Add-on-parts days days 1 day 1 day 1-90 days S 1-4 month 8 Color Management, Th. Dauser, BYK Usermeeting, Alicante Oct. 2011

9 Reality Tilt angles Gesehene Farbdifferenz Beleuchtung gloss b Beobachtung a Glanz a Glanz b 9 Color Management, Th. Dauser, BYK Usermeeting, Alicante Oct. 2011

10 Illumination Tilt angle Top view Even distributed illumination left and right Asymmetric distributed illumination left and right Face view 10 Color Management, Th. Dauser, BYK Usermeeting, Alicante Oct. 2011

11 Reality Visual Tolerancing Color is an emotion. Everybody is confident in his color vision. Tolerance limit is heavily dependent on the person. Many disturbance variables. environment, illumination, geometry Insufficient color memory (s ~ 3-6 de). Adding color differences mentally is impossible. High inaccuracy when close the limit. Context sensitivity. True color is an illusion. 11 Color Management, Th. Dauser, BYK Usermeeting, Alicante Oct. 2011

12 Memory Color Management, Th. Dauser, BYK Usermeeting, Alicante Oct. 2011

13 Person Solid Gray 6-8 assessments per person. 13 Color Management, Th. Dauser, BYK Usermeeting, Alicante Oct. 2011

14 Context Source: 14 Color Management, Th. Dauser, BYK Usermeeting, Alicante Oct. 2011

15 Illumination Source: 15 Color Management, Th. Dauser, BYK Usermeeting, Alicante Oct. 2011

16 Contrast Dependency Visual Assessment of white L*~ assessments from 12 persons 16 Color Management, Th. Dauser, BYK Usermeeting, Alicante Oct. 2011

17 Expectation - Illumination 17 Color Management, Th. Dauser, BYK Usermeeting, Alicante Oct. 2011

p[ablehnung] 0.0 0.2 0.4 0.6 0.8 1.0 Colorimetric Based on human color sensitivity of the eye. Correlates well with perception of a distribution of people. High accuracy even at the border. Memory.

18 p[ablehnung] Colorimetric Based on human color sensitivity of the eye. Correlates well with perception of a distribution of people. High accuracy even at the border. Memory. Independent of environmental influences. Illumination, tiled add-on-parts, person. 0.0 Abmusterung Uni grau dl 18 Color Management, Th. Dauser, BYK Usermeeting, Alicante Oct. 2011

19 Tools Spectrophotometers Tolerances 19 Color Management, Th. Dauser, BYK Usermeeting, Alicante Oct. 2011

20 Example: Optimization of an application process Parameter adaption Optimization by tinting 20 Color Management, Th. Dauser, BYK Usermeeting, Alicante Oct. 2011

21 Example: Change of a clearcoat-system Different supplier 21 Color Management, Th. Dauser, BYK Usermeeting, Alicante Oct. 2011

22 Example: Monitoring Body - Bumpers orange: blau: rot: Bumper meas. By AUDI Bumper meas. By Supplier Production AUDI 22 Color Management, Th. Dauser, BYK Usermeeting, Alicante Oct. 2011

23 Challenges for the Future Tolerance model for effect colors that combines color and sparkling. Better understanding of what stand the color numbers for. Skilful usage of the color numbers no black and white tolerancing. Better compatibility of spectrometers from different suppliers. 23 Color Management, Th. Dauser, BYK Usermeeting, Alicante Oct. 2011

Setting Your Mirrors

Setting Your Mirrors Mirrors are crucial to the safe driving of an RV. After all, the RV is usually significantly larger (longer, wider, and higher) than your normal daily vehicle. So even if you do not