2005.08.15 01:14 "[Tiff] Re: Question on TIFF images with large stripbytecounts", by Katrina Maramba

Does anybody else have an idea on these?

I would need to know the following:

what should the size of the strip be to be considered for this strip-chopping process?
what is the maximum size of the individual "chopped" strip? Bob mentioned of a default libtiff strip size. Anybody got an idea on the exact figure of the default?
For compressed files, the minimum strip size likely depends on compression type and parameters. Can anyone expound on this?

Any comments would be appreciated. Thanks in advance.

Bob Friesenhahn <bfriesen@simple.dallas.tx.us> wrote: Date: Wed, 3 Aug 2005 13:55:15 -0500 (CDT)

Subject: Re: Question on TIFF images with large stripbytecounts

> Libtiff does include a "strip chopping" feature in which it produces > many smaller strips if possible. This feature can be disabled via a

> library compilation option.
>
> Good day Bob,
>

> In this strip-chopping feature you mentioned to me before, do you > know of any accurate and specific process/ figure on how libtiff

> does this? Like what should the size of the strip be to be

> considered for this strip-chopping process? And what is the maximum > size of the individual "chopped" strip? Memory estimation and

> management is very important in my project, thats why I need these > details. Thanks in advance.

No, I do not. For uncompressed files, strips can easily be generated at any size and I assume that they use (or are close to) the default libtiff strip size. For compressed files, the minimum strip size likely depends on compression type and parameters. Even then, libtiff could emulate smaller strips by allocating its own memory (not what you wanted to hear!).

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