annotate Problems/private/col2imstep.m @ 39:8f734534839a

(none)
author idamnjanovic
date Mon, 14 Mar 2011 15:35:01 +0000
parents 51b76c31c93d
children
rev   line source
idamnjanovic@15 1 %COL2IMSTEP Rearrange matrix columns into blocks.
idamnjanovic@15 2 % A = COL2IMSTEP(B,[MM NN],[N1 N2]) rearranges the columns of B into
idamnjanovic@15 3 % sliding N1-by-N2 blocks producing the matrix A of size MM-by-NN. B is
idamnjanovic@15 4 % usually the result of calling IM2COLSTEP(...) with a stepsize of 1, or
idamnjanovic@15 5 % using Matlab's IM2COL(..,'sliding'). Overlapping blocks are summed in A.
idamnjanovic@15 6 %
idamnjanovic@15 7 % A = COL2IMSTEP(B,[MM NN],[N1 N2],[S1 S2]) arranges the blocks in A with
idamnjanovic@15 8 % a step size of (S1,S2) between them. The first block is at A(1:N1,1:N2),
idamnjanovic@15 9 % and the rest are at A((1:N1)+i*S1,(1:N2)+j*S2). Overlapping blocks are
idamnjanovic@15 10 % summed in A. Note that B is usually the result of calling
idamnjanovic@15 11 % IM2COLSTEP(...) with a stepsize of [S1 S2].
idamnjanovic@15 12 %
idamnjanovic@15 13 % A = IM2COLSTEP(B,[MM NN KK],[N1 N2 N3],[S1 S2 S3]) generates a 3-D
idamnjanovic@15 14 % output matrix A. The step size [S1 S2 S3] may be ommitted, and defaults
idamnjanovic@15 15 % to [1 1 1].
idamnjanovic@15 16 %
idamnjanovic@15 17 % See also IM2COLSTEP, IM2COL, COUNTCOVER.
idamnjanovic@15 18
idamnjanovic@15 19
idamnjanovic@15 20 % Ron Rubinstein
idamnjanovic@15 21 % Computer Science Department
idamnjanovic@15 22 % Technion, Haifa 32000 Israel
idamnjanovic@15 23 % ronrubin@cs
idamnjanovic@15 24 %
idamnjanovic@15 25 % August 2009