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Daala does not have a deblcking filter, but rather a lapping
post-filter. Deringing is applied after the lapping post-filter.
Cheers,
Jean-Marc
On 11/02/2015 05:35 AM, Dake He wrote:
> In the results reported in the document, does the reference codec
> have deblocking enabled? Maybe this was addressed before. But I
> cannot seem to locate it.
>
> Best, Dake Original Message From: Jean-Marc Valin Sent: Thursday,
> October 29, 2015 1:39 PM To: Mohammad AlSaleh;
> [email protected] Subject: Re: [video-codec] Daala deringing
> filter vs Thor constrained low pass filter
>
>
> On 10/29/2015 12:41 PM, Mohammad AlSaleh wrote:
>> Looking at chapel subjectively, I think an option to use a
>> weaker filter would be helpful.
>>
>> Generally, the filter gives good subjective results. But some of
>> the details might get lost (e.g. the last steps leading to the
>> chapel).
>
> It isn't really a matter of stronger vs weaker filter. The encoder
> can turn the deringing filter on/off for every superblock, so any
> issue would come down to how the encoder made the decision to keep
> the filtered superblock. For example, the distortion function could
> be missing something, or the encoder could be deciding to
> "sacrifice" some region of the superblock to make another region
> better.
>
> Cheers,
>
> Jean-Marc
>
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