Thanks for sharing your discoveries, Pilou. Always appreciated.

I've been doing comparative tests between image enlargers for years, and I keep coming back to Photozoom Pro ( http://www.benvista.com/photozoompro/ ). The second best enlarger is Alien Skin's Blow Up ( https://www.alienskin.com/blowup/ ), although that hasn't been really updated for years by the time I write this.

Big JPG (and maybe Let's Enhance too) uses the fairly old WaiFu2x algorithm ( http://waifu2x.udp.jp ), which is very good, and comparable to Photozoom Pro, but without Photozoom Pro's extensive options and friendly UI.

There's also a free open source image enlarger called SmillaEnlarger ( https://sourceforge.net/projects/imageenlarger/ ), but it hasn't been updated for more than a year by the time I write this.

Pilou, here's your avatar enlarged using Photozoom Pro:

Original:




Photozoom Pro, 400% enlargement, Reduce JPEG Artifacts option set to 'Extreme' (more smoothing, at the expense of detail blurring):



Note that most of the jagged edges have been smoothed out by Photozoom Pro's S-Spline algorithm, especially the aliased pixel edges. If you compare the eye spirals with the other enlargements, I think Photozoom Pro gives the best result.

Regards,

Metin

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visualization • illustration • animation • 3D (print) design — https://metinseven.com