PanoTools NG:
Re: New hardware testing on PTgui performance
Bernhard Vogl 2007-Dec-26 14:14:37
Hello Joost,
> This is not true: PTGui's temporary files are cropped too. Only if you
> output a layered file, the uncropped layers are written. The temporary
> files do contain uncompressed raw image data (4 bytes per pixel for 8bit
> output) so they can still grow very large.
My "good guess" was bad - sorry for publishing this wrong information.
Still the point remains the same: A raw-file with 4 bytes per pixel is
an enormous amount of data. If you don't have some spare 100s of GB on
your harddisk, a gigapixel panorama is impossible to stitch. If you use
nona's TIFF_m output, the needed diskspace is only a fraction compared
to PTGui (roughly the same as the input size, depending on the file
format variations used).
Also - you may call it a bug or a feature - cropped TIFF will not render
the final panorama outside the ROI, which is another plus when it comes
to filesize...
Best regards,
Bernhard
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