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How to downsample a image matrix using left and right downsampling

• To: mathgroup at smc.vnet.net
• Subject: [mg100864] How to downsample a image matrix using left and right downsampling
• From: tenveer <ten.veer at gmail.com>
• Date: Tue, 16 Jun 2009 21:53:43 -0400 (EDT)

HI all

i am just stuck with a unique problem ...

What i want is to downsample a matrix (image matrix) using two left
and right matrices....
e.g if i have a 100 by 100 image matrix X what i want is to downsample
X to 25 by 25 matrix Y using two downsampling matrices U and V which
are on left and right respectively i.e Y=U*X*V

than what will the contents of the U and V matrices.

Any help will be appreciated

• Follow-Ups:
  • Re: How to downsample a image matrix using left and right
    • From: Daniel Lichtblau <danl@wolfram.com>