2019.03.29 23:02 "Re: [Tiff] combining TIFF images, not multi-page", by Bob Friesenhahn

On Fri, 29 Mar 2019, Paul Hemmer wrote:

> Hi, thanks for the reply!
>
> Do tiled TIFFs open and display as a single image? Do the tiles all
> have to be the same size? My images are broken into full-height
> "columns" of varying widths, that I want to concatenate all together
> into one image in a low-RAM footprint way.

Tiled TIFF does typically "open and display as a single image" but
this is a function of the reader. The reader might choose just to
display one tile, or the image portion corresponding to several tiles.
The tile size is fixed within a given TIFF image.

As has been subsquently mentioned, ImageMagick and GraphicsMagick
provide 'montage' functionality which can paste images together as you
describe, but they do not do so in a "low-RAM footprint way", unless
you are willing to use your hard drive in place of RAM.

If you are dealing with very large images, then it is common to use
tiled tiff with multiple resolutions of the same image so that the
viewer than see a zoomed-out image as well as zoom in to just part of
the image.

Bob
--
Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/

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