Image Filter Tester 1.1 - Image Resample Filter

• This filter resamples an image. It performs up-sampling as well as down-sampling.
• The following interpolation filters are implemented for image resampling:
  • box or rectangular window
  • triangular or Barlett window
  • quadratic
  • cubic
  • Catmull-Rom
  • Gaussian
  • sinc
  • Hanning window
  • Hamming window
  • Blackman window
• This implementation was modified from Paul Heckbert's zoom program. BTW, Paul Heckbert is the inventor of the popular median-cut algorithm for image color quantization. Here is a link to his website where you can download the source code of his zoom program and other interesting programs as well as his technical papers on computer graphics.
• Please be aware of that resampling is applied AFTER cropping in this filter.
• If you do down-sampling and use multi-layer of filters, it is recommended that this filter should be applied before other image filters for better efficiency.
• This filter works for grayscale images or 24-bit color images.

This page was last modified on 11/10/2004 .