Freeware to enlarge an image

[Anonymous]

Hi,

I would like to enlarge an image that is currently 900x600 to a size of
1800x1200 or 2400x1800 and still have the image look good. Is there any
freeware that can make that happen?

Thanks!

 

[Lord Possum]

Hi,

I would like to enlarge an image that is currently 900x600 to a size of
1800x1200 or 2400x1800 and still have the image look good. Is there any
freeware that can make that happen?

=========

Essentially, enlarging any given picture from its original pixel
dimensions involving adding pixels (by various algorithms) to
expand to the new size. It always appears softer than the original.
For instance, duplicating each pixel horizontally, then also
vertically will present a 4-pixel unit which originally was just 1.

Similarly, reduction of pictures essentially involves removing pixels.
One algorithm may remove every other pixel both horizontally and
vertically, resulting in a picture half the original dimensions
(but one-fourth total number of pixels, hence maybe one-fourth
finished bytesize of the file).

Most any of the good freeware packages such as Photofiltre or
Irfanview or XNView will have options for 'resizing'.

 

[JL]

Image Analizer with 'Fractal Interpolation'
http://meesoft.logicnet.dk

Saludos, JL.

 

[socrtwo]

This may be bigger than your what your looking for but there is an
online service and free software for blowing up JPGs to poster size
here:

http://homokaasu.org/rasterbator/

It possibly works differently than other graphics programs in the
blowing up process.

 

[Matt]

=========

Essentially, enlarging any given picture from its original pixel
dimensions involving adding pixels (by various algorithms) to
expand to the new size. It always appears softer than the original.
For instance, duplicating each pixel horizontally, then also
vertically will present a 4-pixel unit which originally was just 1.

Similarly, reduction of pictures essentially involves removing pixels.
One algorithm may remove every other pixel both horizontally and
vertically, resulting in a picture half the original dimensions
(but one-fourth total number of pixels, hence maybe one-fourth
finished bytesize of the file).

Most any of the good freeware packages such as Photofiltre or
Irfanview or XNView will have options for 'resizing'.

http://www.pixoid.com/ - ImageN also has a number of options

Other than methods which invoke the black magic of fractals, the two
methods I've always favoured are:

1. B-Spline (possibly S-spline)
Tends to be a little soft, though pleasant on material that has a
degree of artefacts / noise. Can possibly take an application of
unsharp mask, to make it look a bit sharper.

2. Lanczos
The highest method in Irfanview, tends to be fairly sharp, but totally
unforgiving of defects such as JPEG artefacts.

 

[aafuss]

Babya Photo Workshop:
http://www.winsite.com/bin/Info?19000000037114

 

[Nicolaas Hawkins]

Babya Photo Workshop:
http://www.winsite.com/bin/Info?19000000037114

WHAT THE HELL ABOUT IT?