# imResample

## PURPOSE

Fast bilinear image downsampling/upsampling.

## SYNOPSIS

function B = imResample( A, varargin )

## DESCRIPTION

     Fast bilinear image downsampling/upsampling.

     Gives similar results to imresize with the bilinear option and
     antialiasing turned off, except sometimes the final dims are off by 1
     pixel. Inspired by fast downsapmling routine resize.cpp by Deva Ramanan.

     USAGE
      B = imResample( A, scale )
      B = imResample( A, h, w )

     INPUT [1]
      A        - input image (2D or 3D double or uint8 array)
      scale    - size(B)=size(A)*scale

     INPUT [2]
      A        - input image (2D or 3D double or uint8 array)
      h        - height(B)=h
      w        - width(B)=w

     OUPUT
       B       - resampled image

     EXAMPLE
      I=double(imread('cameraman.tif')); n=100; s=.5;
      tic, for i=1:n, I1=imresize(I,s,'bilinear','Antialiasing',0); end; toc
      tic, for i=1:n, I2=imResample(I,s); end; toc
      figure(1); im(I1); figure(2); im(I2); figure(3); im(abs(I1-I2));

     See also IMRESIZE

     Piotr's Image&Video Toolbox      Version 2.42
     Copyright 2010 Piotr Dollar.  [pdollar-at-caltech.edu]
     Please email me if you find bugs, or have suggestions or questions!
     Licensed under the Lesser GPL [see external/lgpl.txt]

## CROSS-REFERENCE INFORMATION

This function calls:

This function is called by:

- bbApply Functions for manipulating bounding boxes (bb).