Ciao Georg!

On Tue, 2007-05-29 at 11:18 +0200, Kurt Georg Hooss wrote:
> what is the difference between scaling and resizing?
> do you mean the latter would just crop the image?
Yes.
The meaning of those terms varies from application to application, but I
ended up choosing for my beloved Cin the following ones:

to RESIZE: to reduce, enlarge o reshape the outline of an image
preserving the absolute measures of the distances inside it. Part of the
image can be cropped or blank bands can result. 
Example: I can resize the rectangular image of my pizza on the table and
make it a square around the pizza to hide knife and fork. My pizza will
always be of the same size.

to SCALE: to reduce or enlarge an image proportionally, preserving the
ratio of the distances inside it. The image is modified whole; no parts
of the image are cropped, even if they may be not displayed when beyond
the canvas size. Blank bands can result.
Example: I can enlarge or reduce the whole rectangular image of my pizza
on the table, saving my knife and fork and making my pizza bigger or
smaller depending on how hungry I am.

to CROP: to remove portions of an image to eliminate unwanted areas or
to give it another aspect ratio.

Note: Since these definition are newbie-made, they may be inaccurate.


> well... i think the "canvas size" should be the resolution
>  of the entire composition, like in a painting or (ideally) in cinema.
>  and that should well be identical with the output file... right?
Right when you keep the same standard. 
Wrong when you change from PAL to NTSC: the project output shape is
different from the canvas shape. 
The possibility to set their size separately would make the standard
conversion _inside_ Cin easier.


Ciao ciao!
Raffaella


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