localsum_block

PURPOSE

Calculates the sum in non-overlapping blocks of I of size dims.

SYNOPSIS

function I = localsum_block( I, dims )

DESCRIPTION

 Calculates the sum in non-overlapping blocks of I of size dims.  

 Similar to localsum except gets sum in non-overlapping windows. Equivalent to doing
 localsum, and then subsampling (except more efficient).

 INPUTS
   I       - matrix to compute sum over
   dims    - size of volume to compute sum over 

 OUTPUTS
   I       - resulting array 

 DATESTAMP
   29-Sep-2005  2:00pm
 
 See also LOCALSUM

CROSS-REFERENCE INFORMATION

This function calls:

nlfiltblock_sep Efficient multidimensional nonlinear but seperable filtering operation.

This function is called by:

imshrink Used to shrink a multidimensional array I by integer amount.