Bilinear Gaussian Lanczos? Downsampling!

Fri, Mar 17, 2006 Not easy to choose a downsampling algorithm. Some links:

• mplayer: advises bilinear for quality and describes artifacts for each algo
• a blogger: advises lanczos. This links shows pictures produced by each algo.
  
• digital image interpolation: seems to have a preference for bicubic, what photoshop uses.
• videohelp: tested various algorithms and think Bicubic spline is the best.

People don't seem to agree. If you want to check the theory:

• wikipedia lanczos
  
• wikipedia bilinear