XnView Software

Thanks to fellow “XnThusiast” cday, I learned about a freeware program the other day that promises better image scaling quality and can upscale and enlarge photos better than Photoshop's “Preserve Details” algorithm: Steffen Gerlach's “A Sharper Scaling is a high quality image scaling technology mainly developed for upscaling.”

XnTriq ([url=http://newsgroup.xnview.com/viewtopic.php?p=65403#p65403]Corrupt jpegs, thumbnail extracted...[/url]) wrote:

• Alien Skin: Blow Up
• Bearded Frog: Enlarger PRO
• onOne: Genuine Fractals
• MeeSoft: Image Analyzer + Fractal interpolation
• Kneson: Imagener (p/k/a ZSpline)
• Nikola Dachev: ImageScaler
• Giovanni Brembati: PhotoResampling
• BenVista: PhotoZoom Pro (p/k/a S-Spline)
• Extensis: pxl SmartScale
• ddisoftware: Qimage
• Vlad Hosu: Reshade
• Brian Spangler: ResizeIT
• Fred Miranda: Resize Pro
• Peter Werner: Resizor
• Dr. Steven A. Ruzinsky: SAR Image Processor
• FixerLabs: SizeFixer
• STOIK Imaging: Smart Resizer
• Mischa Lusteck: SmillaEnlarger
• HumanSoftware: XFile
• Mehdi: Zoom Engine

• Image enlarger/Magnification filter
• Optional subpixel sampling for high-Q zoom
• Fascinating new image rescaling technology
• How to batch convert 1024x768 jpeg to 1440x900
• Pixel art scaling algorithms such as hq2x, 2xsai, etc
• resizing algorithms

Upscaling icons, drawings
http://waifu2x.me/
It's a on-line utility , upscaling up to 10x10, using Deep Convolutional Neural Networks
(it's a bit slow, so test with small pictures)
Original picture


Zoom in


Classic soft


Using Waifu


You can also clean photos for jpeg artefacts : (style: photo, magnification :0 , noise reduction high)
Before


After

Thank you for the examples, michel038
cday had brought waifu2x to my attention last year when it was first released to the public, but at the time I failed to realize that its potential uses go beyond anime-style art.

• GitHub: waifu2x-caffe

XnTriq ([url=http://newsgroup.xnview.com/viewtopic.php?p=110938#p110938]Pixel art scaling algorithms such as hq2x, 2xsai, etc[/url]) wrote:

• Microsoft Research
  • Depixelizing Pixel Art
    Naïve upsampling of pixel art images leads to unsatisfactory results. Our algorithm extracts a smooth, resolution-independent vector representation from the image which is suitable for high-resolution display devices.
• Pixenlarge
  Pixenlarge is an image enlargement tool. It is distributed both as a plug in for Adobe Photoshop and also as a standalone application. It is mainly specialized in enlarging drawn images, such as e.g. clip arts, icons, drawings, sketches, cartoons etc.
• Scale2x
  Scale2x is real-time graphics effect able to increase the size of small bitmaps guessing the missing pixels without blurring the images.

Two more good ones (both free )

http://www.fitswork.de/software/softw_en.php
http://cas.eedept.kobe-u.ac.jp/WelcomeE ... ex_en.html

SAR's PseudoLAD is my fav though.

PS: And this for pixel art: https://sourceforge.net/projects/xbrz/ (Get ScalerTest app)

Thanks, captaincavern!

Tutorials I found helpful (JavaScript required):

• General Cathexis (SAR Image Processor): Comparisons of Image Magnification Methods
• PixInsight: Interpolation Algorithms » Upsampling Examples

Anime4K, FSRCNNX and NIS would also be good
https://github.com/bloc97/Anime4K
https://github.com/NVIDIAGameWorks/NVIDIAImageScaling

https://raw.githubusercontent.com/bloc9 ... 60p_4K.png

FSR 2.0 which is open source, can also be used to upscale still images, besides renders... command line only for now:
https://github.com/GPUOpen-Effects/FidelityFX-FSR2

I use this AI application for upscaling, interpolation and enhancing videos, and upscaling and enhancing photos.

Topaz Photo AI - https://www.topazlabs.com/topaz-photo-ai
Topaz Video AI - https://www.topazlabs.com/topaz-video-ai

I also use Davinci Resolve to then do further adjustment using the Topaz Video AI plugin.