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This page mirrors information from the Official Checkmark Page, provided by the Computer Vision Group, University of Geneva, Switzerland.
Introduction
Checkmark is a benchmarking suite for digital watermarking
technologies. Running on Matlab under UNIX and Windows, it provides
efficient and effective tools to evaluate and rate watermarking
technologies. Checkmark contains some attacks not present in
Stirmark. Moreover, it takes the watermark application into account
which means that the scores from individual attacks are wheigted
according to their importance for a given watermark usage.
Important new classes of tests including:
- Wavelet compression (jpeg 2000 based on Jasper)
- Projective transformations
- Modeling of video distortions based on projective
transformations
- Warping
- Copy
- Template removal
- Denoising (midpoint, trimmed mean, soft and hard thresholding,
wiener filtering)
- Denoising followed by perceptual remodulation
- Non-linear line removal
- Collage
In addition the following known test classes are re-programmed from Stirmark and
included:
- Cropping
- Flip
- Rotation
- Rotation-Scale
- FMLR, sharpening, Gaussian filtering
- Random bending
- Linear transformations
- Aspect ratio
- Scale changes
- Line removal
- Color reduction
- JPEG compression
Checkmark has been developped by Shelby Pereira from Prof. Thierry
Pun's Computer Vision Group at the the University of Geneva,
Switzerland. Other people who contributed to the benchmark are
Sviatoslav Voloshynovskiy, Maribel Madueño, Stéphane Marchand-Maillet
and Prof. Thierry Pun.
Summary of Checkmark Results
The results are listed as a function of the application. Numbers
quoted are the percentage of correct detections. N/A indicates that
data is unavailable, or the technology is not applicable to the
application.
Results for blind watermarking technologies
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TECH_#bits/APP(#images,#attacks) |
nongeometric(5,210) |
copyrightProtection(5,1880) |
banknote(5,880) |
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N/A |
N/A |
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N/A |
N/A |
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N/A |
N/A |
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N/A |
N/A |
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N/A |
N/A |
Results for non-blind watermarking technologies
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TECH_#bits/APP(#images,#attacks) |
nongeometric(5,210) |
copyrightProtection |
banknote |
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N/A |
N/A |
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N/A |
N/A |
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N/A |
N/A |
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N/A |
N/A |
Links
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