Used to shrink a multidimensional array I by integer amount. ratios specifies block dimensions. For example, ratios=[2 3 4] shrinks a 3 dimensional array I by a factor of 2 along the first dimension, 3 along the secong and 4 along the third. ratios must be positive integers. A value of 1 means no shrinking is done along a given dimension. Can handle very large arrays in a memory efficient manner. All the work is done by localSum with the 'block' shape flag. Note that for downsampling by 2x or 4x for 2D arrays imResample is much faster. USAGE I = imShrink( I, ratios ) INPUTS I - k dimensional input array ratios - k element int vector of shrinking factors OUTPUTS I - shrunk version of input EXAMPLE load trees; I=ind2gray(X,map); I2 = imShrink( I, [2 2] ); figure(1); im(I); figure(2); im(I2); See also imResample, localSum Piotr's Computer Vision Matlab Toolbox Version 3.00 Copyright 2014 Piotr Dollar. [pdollar-at-gmail.com] Licensed under the Simplified BSD License [see external/bsd.txt]