1 / 22

COLOR MEMORY MATCH UNDER DISPARATE VIEWING CONDITION

COLOR MEMORY MATCH UNDER DISPARATE VIEWING CONDITION. Ondrej Panák. SUPERVISING BY: Jon Y. Hardeberg Peter Nussbaum Marie Kaplanová. The Norwegian Color Research Laboratory Faculty of Computer Science and Media Technology Gjøvik University College Gjøvik , Norway

jaafar
Download Presentation

COLOR MEMORY MATCH UNDER DISPARATE VIEWING CONDITION

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. COLOR MEMORY MATCH UNDER DISPARATE VIEWING CONDITION Ondrej Panák SUPERVISING BY: Jon Y. Hardeberg Peter Nussbaum Marie Kaplanová The Norwegian Color Research Laboratory Faculty of Computer Science and Media Technology Gjøvik University College Gjøvik, Norway http://www.colorlab.no Department of Graphic Arts and Photophysics Faculty of Chemical Technology University of Pardubice Pardubice, Czech republic http://www.upce.cz Master Thesis Presentation 8.7.2007, Gjøvik

  2. CONTENT ♦ Introduction - Color memory - Color appearance ♦ Aim ♦ Experiment ♦ Results ♦ Conclusion

  3. COLOR MEMORY ♦ Color memory shift ♦ Cognitive colors ♦ Color memory experiments - Abstract cue - Memory cue ♦ Methods - Selecting - Mixing up - Deciding

  4. COLOR APPEARANCE ♦ Color appearance phenomena ♦ Color appearance models – CIECAM02 ♦ Corresponding color data sets

  5. AIM ♦Color memory matchunder simply specified condition (varied in surround and background parameters only) ♦How big are the differences between mixing memory color in different condition, and can be used CIECAM02 for evaluation modeled experiment? ♦Is memory shift really not related to the conditions of memorizing (the same conditions of mixing)?

  6. VARIABLES ♦ Colors ♦ Given cue ♦ Time to show ♦ Delay time to match ♦ Shape ♦ Angular subtense ♦ Number of observers ♦ Adaptation time ♦ Background ♦ Surround ♦ Illuminant

  7. EXPERIMENT EXPERIMENT 1 EXPERIMENT 2

  8. EXPERIMENT 1

  9. EXPERIMENT 1

  10. EXPERIMENT 2

  11. EXPERIMENT 2

  12. RESULTS E-1 Dim mixing in CIELAB ab plane aL plane

  13. RESULTS E-1 Mean coordinatesof different mixing in CIELAB Nontransformed Transformed

  14. LAB CAM Lighntess Chro./colorful. Hue angle

  15. Nontransformed vs transformed Lab Light Dark Lighntess Chroma Hue angle

  16. RESULTS E-1 Mean values of mixing CIECAM E-1 memory match E-2 simultaneous match

  17. RESULTS E-2 dE LAB dE CAM

  18. dLightness dCroma dHue

  19. Correlation factors for Lab Correlation factors for CAM

  20. CONCLUSION ♦ CIECAM02 has weightily problem with predicting especially the chroma attribute of the color seen with the black background ♦ There is no statistical proof that the background has some influence on color memory shift. There is only slight tendency to memorize the colors as lighter, when they are shown on white background ♦ The lightness shift seems to be correlated to the chroma of original color

  21. FURTHER WORK ♦ More accurate technique of mixing ♦ The variation of the condition with light sources variations as well ♦ Color memory of color pairs

  22. THANK YOU FOR YOUR ATTENTION

More Related