color harmonization acm siggraph 2006
Download
Skip this Video
Download Presentation
Color Harmonization - ACM SIGGRAPH 2006

Loading in 2 Seconds...

play fullscreen
1 / 23

Color Harmonization -ACM SIGGRAPH 2006 - PowerPoint PPT Presentation


  • 146 Views
  • Uploaded on

Color Harmonization - ACM SIGGRAPH 2006. Speaker :李沃若. Authors. Daniel Cohen-Or Tel-Aviv University Volume graphics Visualization of large environments Shape modeling Image and surface manipulation. Authors. Olga Sorkine Tel-Aviv University

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Color Harmonization -ACM SIGGRAPH 2006' - sundari


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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
authors
Authors
  • Daniel Cohen-Or
    • Tel-Aviv University
    • Volume graphics
    • Visualization of large environments
    • Shape modeling
    • Image and surface manipulation
authors1
Authors
  • Olga Sorkine
    • Tel-Aviv University
    • Student of Daniel Cohen-Or
    • Computer Graphics
  • Ran Gal
authors2
Authors
  • Ran Gal
    • Tel-Aviv University
    • Student of Daniel Cohen-Or
    • Computer Graphics and Vision
    • Work for Microsoft Corporation on the new XBOX 360
authors3
Authors
  • Ying-Qing Xu
    • Visual Computing Group, Microsoft Research Asia
    • Learning based digital facial cartoon generation
    • Computer animation
relative paper
Relative Paper
  • Understanding Color. [Holtzschue 2002]
  • Color design support system considering color harmony. [Tokumaru et al. 2002]
  • Color Index: Over 1,100 Color Combinations, CMYK and RGB Formulas, for Print and Web Media. [Krause 2002]
introduction
Introduction
  • Harmonic colors are sets of colors that are aesthetically pleasing in terms of human visual perception.
  • Finds the best harmonic scheme for the image colors.
color wheel
Color Wheel
  • Describe the color distribution
  • Use HSV color space
    • H:0~360(hue)
    • S:0~1 (saturation)
    • V:0~1 (value)
harmonic templates
Harmonic templates
  • Sum up from experience
harmonic schemes
Harmonic Schemes
  • Fit a harmonic template T to the hue histogram of the image.
  • Determine color shift direction.
  • Shift of color.
fit a template
Fit a template
  • Fine αand a template that minimize the function:

Template

Orientation

The least distant of hue between point and template

Saturation of p

color shift
Color shift
  • C(p) : the central hue of the sector associated with pixel p
  • w : the arc-width of the template sector
  • :normalized Gaussian function
problem
Problem
  • “splitting” of a contiguous region of the image
add region segmentation
Add Region Segmentation
  • Fine the optimal label assignment minimizes the energy:

Pixel’s label

Hue distant to

assign edge

color coherence between neighboring pixels assigned to

the same label.

min cut max flow
Min-cut / max-flow

Function can be turned

into min-cut/max-flow

problem.

Energies turn into the

cost of road.

Details see

[Boykov and Jolly 2001].

references
References
  • BOYKOV, Y., AND JOLLY, M.-P. 2001. Interactive graph cuts for optimal boundary and region segmentation of objects in N-D images. In Proceedings of ICCV, 105–112.
  • COLOR WHEEL EXPERT, 2000. http://www.abitom.com/.
  • MOROVIC, J., AND LUO, M. R. 2001. The fundamentals of gamut mapping: A survey. Journal of Imaging Science and Technology 45, 3, 283–290.
  • PRESS, W. H., TEUKOLSKY, S. A., VETTERLING, W. T., AND FLANNERY, B. P. 1992. Numerical Recipes in C: The Art of Scientific Computing. Cambridge University Press, New York, NY, USA.
ad