The options refers to the width of the final pano, not of the individual
images.
And this setting is only used by the assistant. Therefore it is at the correct
position. (You can change the output size on the stitcher tab - as written in
the help.)
The assistant calculates first the optimal width of the pano. Depending on the
actual needed reprojections the canvas size can be bigger than the input
images. If you think this is a bug please provide the pto file.
Then the width is reduced by the setting. The standard value of 70 % results in
a pano which should be sufficient for most cases (Because of the Bayer pattern
higher values don't result in higher resolution of the final pano. It increases
only the processing time.)
The value refers to the width of pano - and not the size, which is completely
different, e.g. reducing the width (and height) by 50 % results in the
reduction of the image size to 25 %!
** Changed in: hugin
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1958027
Title:
preference about final pano size is not respected
Status in Hugin:
Incomplete
Bug description:
In preferences, assistant, an option has label "Downscale final pano",
requiring a "percetual of max. width".
The label suggests that only a downscale is performed, while it seems
that an upscale is done.
I set a 100% value, and with 4 images of about 5400x3700 I got a final
pano of about 10000x10000, while I should have a got a pano with max
size of 5400x5400
Besides that, the "Downscale final pano" doesn't belong, logically
speaking, to "auto align" group, as the graphics suggest.
Besides that, the label "percent of max. width" is confusing, because
images have width and height, and then a "maximum width" doesn't make
sense, I'd suggest "maximum size"
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