SLIDE 1
Warm Version Cool Version Original Image
Images courtesy of James Gurney
2
Masking Ying Song Cheryl Lau Sabine Ssstrunk cole Polytechnique - - PowerPoint PPT Presentation
Masking Ying Song Cheryl Lau Sabine Ssstrunk cole Polytechnique - - PowerPoint PPT Presentation
An Interactive Tool for Gamut Masking Ying Song Cheryl Lau Sabine Ssstrunk cole Polytechnique Fdrale de Lausanne (EPFL) 2 Warm Version Original Image Cool Version Images courtesy of James Gurney 3 Original Image Warm Version
SLIDE 2
SLIDE 3
3
Image courtesy of Jerry Ferguson
Warm Version Cool Version Original Image Warm Version Cool Version Original Image
SLIDE 4
Richard Robinson’s online tool
4
Painter’s Gamut Mask Tool
SLIDE 5
Mask Panel Image Panel Gamut Panel
5
Image of birds courtesy of Kodak
Our Tool
SLIDE 6
Related Work
- Interactive gamut visualization and gamut
mapping tools: [Farup et al. 2000], [Stone et
- al. 1988], [Kalra 1994]
6
- Richard Robinson’s online gamut masking
tool: Masks are intended to be printed and used as a reference when painting
- Commercial software: Adobe Photoshop,
Adobe Lightroom, Adobe Speed Grade and FilmLight Baselight
- Cluster-based gamut mapping [Lau et al.
2011]
SLIDE 7
Method Overview
Input image Clusters 2D mask 3D gamut User interaction Output move cluster change mask
Image courtesy of Moyan Brenn
7
L* u* L* u* v* v*
Gamut mapped image
SLIDE 8
8
Gamut Creation
2D mask 3D gamut
L* u* v*
SLIDE 9
Intersect with sRGB Gamut mask (L*u*v*) 3D voxel grid Gamut boundary
9
Gamut Creation
SLIDE 10
10
Image Processing
Input image Clusters
SLIDE 11
- Cluster using K-Means in color and space.
Original image Clustered image 3D clusters
Image Processing
11
- Similar to [Lau et al. 2011]
L* u* v*
SLIDE 12
12
Gamut Mapping
gamut mapped image user interaction
- utput
move cluster change mask
SLIDE 13
r
13
Gamut Mapping
Gamut Boundary Distance Field Level-set r Clusters Output Image
L* u* v* L*
find the closest point in level- set
L* u* v* u* v*
SLIDE 14
User Interactions
14
L* u* v* L* u* v*
SLIDE 15
- Same as [Lau et al.]
Image before blending Image after blending
V i i qi q d w d u M u w i T i qi ) ( 1 15
Blending
SLIDE 16
16
Original images courtesy of Pablo Romeo
Results
SLIDE 17
17
Original images courtesy of Nicholas A. Tonelli
Results
SLIDE 18
18
Original images courtesy of Malik Ml Williams
Results
SLIDE 19
19
Original images courtesy of Flickr user MacDonald
Results
Original Image Yellow Door Orange Door Green Door
SLIDE 20
20
Original images courtesy of Flickr user colorblindPICASO
Results
Original Image Greenish Tint Image Bluish Tint Image
SLIDE 21
21
Conclusion
Interactive Gamut Masking Tool Arbitrary gamut shapes Support local color changes
SLIDE 22
22
Thank you
More information: http://ivrg.epfl.ch/research/gamut_masking