Dynamic Range Independent Video Quality Assessment

Dynamic Range Independent Metric Online

Frequently asked questions (FAQ)

Q:
What do DRIVQM and DRIIQM stand for?
A:
Dynamic Range Independent Image - and Video Quality Metric. These metrics evaluate the quality of a test image/video with respect to a reference image/video. The test and reference data can be of any dynamic range: for example you can compare an LDR test video with an HDR reference video, hence the term "dynamic range independent".
Q:
What are DRIMs good for and what scenarios are not so suitable?
A:
DRIMs are threshold-based metrics, i.e. comparisons of any footage where one is interested in perception of near-threshold distortions is appropriate. On the other hand, if your distortions are clearly above the visibility threshold (supra-threshold), our metrics might not do a perfect job.

Furthermore, our metrics currently operate on luminance, so any color-related distortions are biased, e.g. comparing performances of color-to-grayscale conversions by DRIMs does not make any sense, a sample of completely WRONG usage of our service is here: Codruta O. Ancuti, Cosmin Ancuti and Philippe Bekaert, "Enhancing by Saliency-guided Decolorization", In Proc. IEEE Computer Vision and Pattern Recognition (IEEE CVPR), Colorado Springs, USA, 2011.
Q:
This sounds very interesting, where can I get more information?
A:
See the SIGGRAPH papers DRIIQM and Video Metric. Feel free to email us if you have further questions
Q:
Could you give me the source code?
A:
Not at this time. But we have plans to make the source code of the metrics publicly available.
Q:
What does this web service do?
A:
It lets you upload your images and videos, and runs the corresponding metric on them
Q:
Is the web service free (as in free beer)?
A:
Yes! The service is simply there to promote our research, and is completely free.
Q:
Can I publish results from your service in my scientific publication?
A:
Yes by all means! If you do that, please cite the SIGGRAPH paper of the metric you used.
Q:
Can I use your results other than for scientific purposes?
A:
Please kindly contact us if you intend to do that.
Q:
What do you need my email address for?
A:
The video metric computation can take a while, especially for long and high resolution videos. After you upload your videos, we send you a link where you can download your results via email after the quality evaluation is completed.
Q:
Will you give my email to third parties?
A:
No, we are a scientific research group and have no intention of violating your privacy.
Q:
What will happen to the videos that I uploaded?
A:
They will immediately be deleted once the quality evaluation is done. Your results will also be deleted after you download them.
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