High-quality image upscaling

[crafn]

• gamma-correction
• something better than just linear interpolation. Should look into edge-preserving algorithms etc.

[crafn]

ftp://ftp.math.ucla.edu/pub/camreport/cam11-03.pdf
http://balsells.eng.uci.edu/files/2014/11/Anna-Diez-MS-Thesis.pdf