Re: Telcon reminder and agenda for Wed. May 13

Hi Vlad,

Sorry, I have to run out for a while this afternoon, which means I'm not 
going to be able to make the telcon today.

 > Agenda:
>
> -Upcoming changes in telcon machinery and functionality (Zakim will be
> replaced by WebEx, details to follow);
>
> -Updates on various issues (CTS development, hmtx pre-processing, CFF
> de-sub / re-sub work and associated compression gains);

Re hmtx pre-processing: ISTM this is something we should seriously 
consider; I agree with Behdad's comment that the processing complexity 
shouldn't be an issue, and the savings could be significant: 2 bytes per 
glyph could amount to several KB in a large font, even after Brotli 
compression; note that in most fonts, the LSB values will not show any 
particular patterning, so the entropy coder won't be able to work 
miracles to eliminate them.

Indeed, I wonder if removing the LSB values from the hmtx table might 
*also* allow Brotli to get better compression of the remaining advance 
widths.

So this is something I think we should explore further. Raph's doc 
suggested it could be worth 1%, and given that reconstructing it from 
the glyph bbox is actually pretty trivial, it sounds worthwhile to me.

>
> -F2F planning and agenda proposals – bring the issues you want to see
> added to the meeting agenda;
>
> -AOB
>
> Talk to you soon,
>
> Vlad
>

Received on Wednesday, 13 May 2015 13:54:33 UTC