Class CImagePyramid

Defined in File CImagePyramid.h

Class Documentation

class CImagePyramid

Holds and builds a pyramid of images: starting with an image at full resolution (octave=1), it builds a number of half-resolution images: octave=2 at 1/2 , octave=3 at 1/2^2, octave=N at 1/2^(N-1).

Color (RGB) or grayscale pyramids can be built from color input images; only grayscale pyramids can be built from grayscale images.

The algorithm to halve the images can be either a 1:2 decimation or a smooth filter (arithmetic mean of every 4 pixels).

Pyramids are built by invoking the method buildPyramid() or buildPyramidFast()

Example of usage:

CImagePyramid  pyr;

CImage img = ...

pyr.buildPyramid(
   img,
   4,    // num. of octaves
   true  // smooth
   );

pyr.images[0].saveToFile("pyr0.jpg");
pyr.images[1].saveToFile("pyr1.jpg");
...