Resize Graphic Images II

[Jonathan Wood]

Okay, I figured out how to resize an image by creating a new bitmap and
specifying the new size when I do.

I don't suppose there's any support for resizing with anti-aliasing so that
I get a smoother image is there? Any tips?

Thanks.

Jonathan

[Peter Duniho]

On Sun, 22 Jul 2007 11:13:46 -0700, Jonathan Wood <jw***@softcircuits.com>
wrote:

Okay, I figured out how to resize an image by creating a new bitmap and
specifying the new size when I do.

I don't suppose there's any support for resizing with anti-aliasing so
that I get a smoother image is there? Any tips?

Yes (ignoring for the moment any semantic difference between
"anti-aliasing" and "interpolation" :) ).

Create a new empty Bitmap rather than using one Bitmap as the source for
another, get a Graphics instance from that Bitmap, set the interpolation
quality you want on the Graphics instance, and use Graphics.DrawImage() to
render the original bitmap into the new Bitmap.

Pete

[Jonathan Wood]

Peter,

>Okay, I figured out how to resize an image by creating a new bitmap and
specifying the new size when I do.

I don't suppose there's any support for resizing with anti-aliasing so
that I get a smoother image is there? Any tips?

Yes (ignoring for the moment any semantic difference between
"anti-aliasing" and "interpolation" :) ).

Thanks for the correction.

Create a new empty Bitmap rather than using one Bitmap as the source for
another, get a Graphics instance from that Bitmap, set the interpolation
quality you want on the Graphics instance, and use Graphics.DrawImage() to
render the original bitmap into the new Bitmap.

I didn't quite follow every bit of that but I'll bet I can figure it out
from your description. And I'm thrilled that this can actually be done!

Thanks!

--
Jonathan Wood
SoftCircuits Programming
http://www.softcircuits.com