Image enlarger/Magnification filter

[Guest]

First this is like ScaleX, a magnification filter. As i told you before..

Here is a new one...

1- http://www.hiend3d.com/hq2x.html
2- http://www.hiend3d.com/hq3x.html
3- http://www.hiend3d.com/hq4x.html

yours

MAAD

[Aokromes]

I have tested it with my images and i only can say 1 thing
W0W

[xnview]

first this is like scaleX.. as i told you before..
here is a new one...
1- http://www.hiend3d.com/hq2x.html
2- http://www.hiend3d.com/hq3x.html
3- http://www.hiend3d.com/hq4x.html

Very good result!
Pierre.

[helmut]

I have just made a quick test with the image of the "Post reply" button which can be seen at the top and bottom of each post here in the newsgroup. The 2x magnified image was so-so. Then I've tried to enlarge an icon, that result was pretty good. I think the magification result depends very much on the image you use. If the image is anti-aliased, already, the result won't be good. That's what I experienced, perhaps there is more info on the web page of the h?qx magification filter (see link above).

Still, the filter is nice and I wonder whether the magnification filters could be easily integrated in XnView by using the "Open with" functionality. What the h?qx programs need, is an input and an output file. For input, a bmp image is needed.

Perhaps with some knowledge of batch scripting, one could write a small batch script which is started using the "Open with" function of XnView. The batch script then starts h?qx which does the magnification of the image. Anyone?

[Louie]

Very nice indeed!

[xnview]

But which feature can be made with this GREAT method?
Pierre.

[crazytb]

...But which feature can be made with this GREAT method?

Hum... Maybe add these algorithms to "Resize" dialog. Some radio boxes to select "traditional resize" (current implemented algorithms in XnView) and hq2x, hq3x and hq4x resize.

Or these algorithms could be added to "Resample" listbox. But, when selected, the "Screen size" fields will be automatically disabled and will show the final size of image. When unselecting these items in listbox, old size should be restored to those textboxes.

What do you think?

[Hobbe]

I think it's time to resurrect this thread and make it an official feature request.

http://www.hiend3d.com/demos.html

HQX resizer and Smart Texture Filtering support please

[Troken]

A quote from the site:
"The filter was not designed for photographs, but for images with clear sharp edges, like line graphics or cartoon sprites."

I have worked with image enlarging (photographs) and not many solutions have impressed me. This HQX resiser looks good, but notice the examples, cartoony images with sharp edges. Anti-aliased photographs is another cup of tea.

If anyone is interested, the best software I've seen is PhotoZoom, which uses the S-spline algorithm. I have used this and the results are often amazing, both for screen-images and images for print. Unfortunatley it's not free, but you can download a free trial here:
http://www.benvista.com/main/content/co ... ozoompro_1

A good example of how it can enlarge here:
http://www.benvista.com/main/skin1/imag ... ample1.htm
(Move your mouse over the image to compare). The other examples are not very good, but then they are extreme enlargements (400%).

[Hobbe]

A quote from the site:
"The filter was not designed for photographs, but for images with clear sharp edges, like line graphics or cartoon sprites."

That's exactly why I'm interested in it, I work a lot with sprites and pixel art.

[Troken]

That's exactly why I'm interested in it, I work a lot with sprites and pixel art.

Well, in that case it seems to be perfect! I just guess that most people would want to use such a feature with photographs.

[Drahken]

The best filter I've found for enlarging images in general (and photographic ones in particular) is the Wiener filter. I have only seen it available in 1 program, ImageAnalyzer.

[Hobbe]

That's exactly why I'm interested in it, I work a lot with sprites and pixel art.

Well, in that case it seems to be perfect! I just guess that most people would want to use such a feature with photographs.

Neither should someone working with non-photographic images use anything but nearest neighbor, HQX and the like

[JohnFredC]

The best filter I've found for enlarging images in general (and photographic ones in particular) is the Wiener filter. I have only seen it available in 1 program, ImageAnalyzer.

Thanks for this link. ImageAnalyzer crashes sometimes and the interface needs lots of polish (not up to XnView standards, for instance) but the filters I have tried so far are quite effective and offer more parameters than usual in a free tool.

The digital photo noise reduction filter works well and has components for luminance AND chrominance.

[foxyshadis]

If you're curious, the results of all the current commercial resizers are hosted here: http://www.americaswonderlands.com/digi ... lation.htm

Personally I prefer sharper, chisled images over warmer but softer ones, like Photozoom (although I still own it and several of the other packages, in addition to developing my own off and on). But it all comes down to taste, that's why a big comparison like that is so nice.