CI-Navigator Presentation

Transcription

1 Color and Image Matching System for Metallic and Pearlescent Paint 13 th of July 2010 CI-Navigator Presentation 1 OFFICE COLOR SCIENCE developed new color matching system applied anisotropic color appearance model and image processing calculation. In measurement dialog, operator measure reflectance and image by BYK multi-angle spectrophotometer. CI-Navigator System calculates Metallic and Pearlescent Paint Formulation by reflectance and Image information. 2 Office Color Science 1

2 Optical Property of Metallic and Pearlescent Color Metallic Color Wavelength (nm) Viewing Angle (deg.) Metallic and Pearlescent Color such like Automotive Exterior Color needing high level human experience and quite difficult. Before developing Formulation System, Office Color Science had studied and Considered deeply about Color Model and Optics Property about Coatings. And we decided, Formulation system have to calculate 4 Category Material. Each Category has different Optical Property and Structure Pearlescent Paint Film Paint Film Stricture of Metallic and Pearlescent Color 1. Absorption Pigment 4. Flop Control Agent 2. Metal Flake 4 Office Color Science 2

3 Absorption Pigment Scattering Absorbing Absorption Pigment has Scattering and absorbing Coefficient by Kubelka-Munk Theory. These two coefficient are related with Chemical or molecular structure and particle size. Automotive Color needing so many kind of Absorption Pigment, and these two factor are related highlight and shade Spectrum. Especially, Scattering Coefficient is very important to calculate highlight and shade color. CI-Navigator are applied Absolute two constancy method. 5 Metallic Effect Material Metallic Effect Materials are mostly Metal Flake such as Al, Cu, etc., and no transparency. Basic Optical is same as miller, incident light are reflected to Specula direction. In this case, Kubelca- Munk model and Duncan color mixing theory are mismatched and can not apply. CI-Navigator was developed special optics and color matching model. 6 Office Color Science 3

4 Metallic Laser Con-focal Microscope Image These four images are Silver Dollar type Aluminum Flake observation photograph by Laser Con-focal Microscope. This method can be get 3 dimension orientation information of Effect Material in Coating Layer. Upper side two images are pure Aluminum over dark coating, left side is Color Image and right side is 3 dimension orientation image. And lower two images are pure Aluminum mixed with carbon black paint. Each particles color are related with orientation and z-axis z position. 7 Coated Mica, etc. Pearlescent Effect Material Pearlescent Effect Materials has complex optical property. Core Material is Mica and coated oxide Metal, such like TiO2, SnO2, Cu, etc., and interference color and transparency. Of coarse, Kubelca-Munk model and Duncan color mixing theory are mismatched and can not apply. CI-Navigator was developed special optics and color matching model. 8 Office Color Science 4

5 T60-24 SW Steller Green Laser Con-focal Microscope Image These four images are Pearlescent Material Merck Xirallic T60-24 SW Steller Green observation photograph by Laser Con- focal Microscope. This method can be get 3 dimension orientation information of Effect Material in Coating Layer. Upper side two images are over dark coating, left side is Color Image and right side is 3 dimension orientation image. And lower two images are coating pure Xirallic mixed with carbon black. Each particles color are related with orientation and z-axis z position. 9 Pearlescent Effect Material Interference Core : Mica, Al 2 O 3, etc 0.4μm Core Core TiO 2, SnO 2, Fe 2 O 3 TiO 2, SnO 2, Fe 2 O 3 Fe 2 O 3 Transparence Mostly Pearlescent Material composed by core and coated layer different refractive index material, for example mica and oxide metal. Coating layer is very thin, and occurred interference SnO 2 color. TiO 2 Ti n O 2n-1, FeTiO 2, CoTiO 3, Carbon, etc 10 Office Color Science 5

6 Property of Pearlescent On White On Black Hi-Light Shade Reflect, Transparent, Interference Pearlescent Material has transparent, then there are quite difference color between over bright and over dark coatings. 11 Flop Control Agent Silica, Wax TiO 2, Micro-TiO 2 Flop Control Agent are applied to adjust flop feel. There are two type, one is orientation controller such as Silica or Wax material, and the other o is scattering controller such as TiO2 or Micro-TiO2. 12 Office Color Science 6

7 Measuring Method of Gonio Apparent Color 110 deg. 75 deg. 45 deg. 25 deg. 15 deg. -15 deg. BYK-Mac 6 Angle System 13 CCD Chip 15 Deg. 45 Deg. Diffuse 75 Deg BYK-Mac Optics BYK-Mac (BYK-Gardner) has Monochrome CCD Sensor and can sense bb15 deg., 45 deg., 75 deg., and Diffuse Illuminant. 75 Diffuse 14 Office Color Science 7

8 Why metallic and pearlescent color are required Multi- Angle Spectrophotometer Measuring? Solid Metallic Pearlescent Hi-Light Hi-Light Hi-Light Shade Shade Shade Solid Color has almost same reflectance profile each geometry. highlight and shade are almost same level and shape. It is very low flop property. In the case of Metallic color, highlight and shade reflectance levels are different. But keep proportional relation between each geometry. Each geometry keep constant absorption band. Pearlescent color has quite complex optical property. Highlight and shade reflectance spectrum profile are not same level and profile. Especially, highlight color and shade has opposite color over bright 15coat. Color Matching Theory of Metallic and Pearlescent Color 16 Office Color Science 8

9 Characteristics of Metallic and Pearlescent Color Color with Feel. Measure by Multi-Angle Spectrophotometer Color with Texture. Measure by Imaging Devices 17 Color Information Measured by Multi-Angle Spectrophotometer + Image Information Measured by Imaging Devices Color Matching Theory applied Color and Image Information 18 Office Color Science 9

10 CCD Image Processing for Metallic and Pearlescent Coatings Applied Fractal Dimension Db nb 0 Db nb 1 Db nb 5 Db nb 10 Db nb 20 Db nb Computer Color Matching System for Metallic and Pearlescent 20 Office Color Science 10

11 CI-Navigator Purpose Laboratory Use High Accurate Color Matching with Image Control Create Data Base 3-Demension Visualize to Communicate with Customer Designer Production Use Batch Correction QC Body Shop Use CCM, Search and Correction 3-Demension Visualize to Customer Full body Repaint Presentation 21 CI-Navigator available Spectrophotometers BYK-Mac 22 Office Color Science 11

12 Spectrophotometer with Imaging Device Micro Scope Laser Con-focal Microscope BYK-Mac 23 CI-Navigator Function 24 Office Color Science 12

13 OCS Software Solution Simulation Function Formulation Function 25 Reflectance Delta E* Graph Formulation Real Color and Color Value Correction History Scanner Image 26 Office Color Science 13

14 Measure Dialog Image Processing Value Measured Image Scanner Particle Image 27 Simulation Scroll Bar Simulate Graph CIELAB, Reflectance etc. 28 Office Color Science 14

15 Real Color Image on Substrate Simulation Scroll Bar Reflectance and Optical Density Graph 29 Formulation System relate with Data Base Ordinary Case, Body Shop user know the Color Number. System have data base and store the Color, Image and Formulation Data. Customer can use these information and System calculate Correct Formulation. Of course these Data can apply for Self-Learning and improve Color accuracy. 30 Office Color Science 15

16 Component Color Palette Dialog 31 Primary Detail Dialog 32 Office Color Science 16

17 Data Base Dialog Data Base Search by Color, Code, etc. Data Base Search by Color, Code, 33etc. Measuring Function Measure Function can apply Evaluation and QC Work 34 Office Color Science 17

18 Quality Control Dialog 35 Color Search Dialog 36 Office Color Science 18

19 Illuminant z Detect θ i φ o φ i θ o y x 3D-Simulation Function 37 3D-Simulation Function Color Modify by CI-Navigator 38 Office Color Science 19

20 Sean Change Function n-styler Sean Selection Function 39 Top Coat (Pearlescent) Base Coat (Color Base) Multi-Layered Structure Simulation 40 Office Color Science 20

21 Product Designer Color Value Simulation Formulate Simulation Hardware and Software Relation 3D Visualize System Coated Products Supply Pre-model Confirmation Design Information send by Internet Paint Manufacturer Pre-model Confirmation Design and Formulate Information send by Internet Base Paint, Complex Colored Paint, Large Quantity Order Paint Interactive Information Exchange Painter 41 CI-Navigator Light-Viewer Function 42 Office Color Science 21

22 Object Control Object Control can change Oval shape proportion and surface condition such as pealing, reflection intensity. Lighting Control These control function are included Parallel and direct, or spot lighting, Ambient, Diffuse, and Spot lighting intensity. View Control View point and Oval Object Direction can change freely with indicator. Two different Color appear in Oval surface with Graininess and Sparkle Image measured by BYK-Mac or Multi-angle Spectrophotometer with Multi-angle Scanner Image. 43 Specification -1 Formulation Calculation Measure: up to 20-Angle Reflectance/Up to 4 Geometry Image Processing with Self-Learning Function Color Matching Object: Absorption Pigment, Metallic Pigment, Pearlescent Pigment, Flop Controller Matching Type: Isomeric/Metameric Color Matching Combination Mode: Manual/Automatic/Full-Automatic Maximum Combination Number Absorption Pigment 6 Metallic Pigment 3 Pearlescent Pigment 3 Flop Controller 3 CCM Mode: Metallic-Pearlescent 2-Coat 2 Color Metallic-Pearlescent 3-Coat 3 Color Candy Tone Color Solid Color Correction Calculation Remake/Batch Correction (Labo( and Production Use.) Simulation Function Reflectance Simulation Real Color Simulation on White/Black/Measured Substrate Image Parameter Simulation CIELAB Parameter to Reflectance Creation Function BRDF Out-put relate with 3D rendering system and Light Viewer Function 44 Office Color Science 22

23 Specification -2 Primary Data Base Absorption Pigment Metallic Pigment Pearlescent Pigment Flop Controller 50 Data Base Data Base Function can stored and register Following Item. Measured or simulated Reflectance Measured or simulated Image Parameter Measured actual Image Header information 5 terms. (Such like Color Code, Production Code, Car Maker, etc.) Formulation Included following Function 3 Dimension Distribution Display Self Learning Accuracy Check Function Data Measure Spectrophotometer X-Rite MA68II, MA98, etc. BYK Gardner BYK Mac, BYK 3 Angle etc. Konica Minolta CM512m3 Murakami GCMS-3B, GCMS-4 (Up to 10,000 Angle/one time measuring, included Normal and GCMS Cordinate Converter) 45 Office Color Science 23