Comments (8)
nekhtiari
commented on May 28, 2024
2
@sfalkena thanks for the explanation. that is the reason for your inconsistent result @ichlubna. Fair point and nice suggestion, I will make a PR to make this a flexible argument.
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sfalkena
commented on May 28, 2024
Hi, I noticed this at first as well. It most certainly has to do with the data range that is being used in calculating the values. As a standard in this tool the value is set to 12 bits (4095) (check implementation here. I am not sure what ffmpeg uses, but I suspect it finds it from the datatype of the images. Hope this helps!
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ichlubna
commented on May 28, 2024
the value is set to 12 bits (4095)
Hmm would be nice to be able to change it as an argument or to have an automatic detection then. Otherwise the tool can't be really used when comparing for example compression methods etc. with already published results. Thanks for the answer anyway!
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nekhtiari
commented on May 28, 2024
Sorry for taking this so long. Unfortunately, I am a bit busy at the moment with other projects. So it might take some time I can get back to this. In the meantime feel free to contribute or make PR if you feel like it. I would be more than happy :)
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lumiaxth
commented on May 28, 2024
Hi, can I ask that ffmpeg's results are reliable? Thx for your attention!
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ichlubna
commented on May 28, 2024
Hi, can I ask that ffmpeg's results are reliable? Thx for your attention!
I took ffmpeg as a generally accepted and widely used tool even among scientific community. Do you think the results are not correct? They were usually according to my expectations when I used it.
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lumiaxth
commented on May 28, 2024
Hi, can I ask that ffmpeg's results are reliable? Thx for your attention!
I took ffmpeg as a generally accepted and widely used tool even among scientific community. Do you think the results are not correct? They were usually according to my expectations when I used it.
Ok, got it. I'm new here, so I feel confused about two different data. Thanks for your kind reply!
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grapemaidaa
commented on May 28, 2024
What's "the value is set to 12 bits (4095)" mean?
And where should I set it in this code?
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Related Issues (20)
- install error HOT 2
- Performance HOT 1
- Usage FSIM with Normalized image between [0 1] range HOT 1
- is the RMSE wrong? HOT 5
- Error during installation HOT 3
- ISSM metric does not work HOT 6
- Support python 3.10 HOT 3
- Installation Error HOT 4
- Use for Different Image Dimension HOT 2
- psnr HOT 1
- Does not work with python3.10 and python3.11 HOT 4
- ssim uses multichannel kwarg which is not longer used by structural_similarity function HOT 1
- Use Poetry for packaging and dependency management
- Can SAM be used in computing two RGB images?
- command not found: image-similarity-measures HOT 3
- Missing normalisation in _ehs for ISSM HOT 3
- Multi-band image calculation FSIM is Nan value HOT 4
- What's "the value is set to 12 bits (4095) "mean?
- ModuleNotFoundError: No module named 'image_similarity_measures' HOT 2
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