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Date: Mon, 14 Nov 2016 23:16:31 +0200
From: Paavo Helde <paavo@osa.pri.ee>
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Subject: Re: [Tiff] Right way to make a multi-resolution pyramid
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On 14.11.2016 20:16, Kemp Watson wrote:
> Hi all:
>
> What is the =93correct=94 or canonical way to make a (tiled) =

> multi-resolution pyramid in TIFF?
>
> Most implementations I=92ve seen simply chain top-level IFDs together, =

> starting with the base or full-res layer, and going smaller from there =

> to the apex. this seems wrong to me.

You are right, sub-IFDs would be more appropriate. However, sub-IFDs are =

not so well supported by various TIFF readers. That was the reason why =

in my company when they were working out the pyramidal TIFF schema a =

couple of years ago they still went with top-level IFD-s.

Cheers
Paavo

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