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This tool tests 13 resizing algorithms (available as Delphi code).
Tested algorithms
01 JanFX SmoothResize
02 JanFX Stretch
03 Transform (from Graphics32)
04 HB (Private)
05 madGraphics (from madShi)
06 VCL.ScaleImage (from Embarcadero)
07 VCL.Stretch (from Embarcadero)
08 SmoothResize (assembler)
09 Windows Thumbnail (Windows API)
10 Windows StretchBlt (Windows API)
11 FMX.CreateThumbnail (from Embarcadero)
12 Windows.WIC (Windows API)
13 Windows.GDI (Windows API)
Tests:
- Resample up
- Resample down
Two of the above tests include 3rd party algorithms.
If you don't have access to their source code, you will have to switch off the {$3RDPARTY} switch.
Test program
Precompiled EXE file and test images (high res/low res) available.
Conclusions
This article discusses the conclusions of the test and shows the resulted images.
Future
Star this project if you want to see more algorithms added to the comparison.