I am new in MATLAB and interested in face recognition. I'm implementing the proposed method in this paper .It is said that after extracting cA and cH subbands , should horizontally place the two subbands and prepare it for taking DFT spectrum. I can not realize what it means to place them horizontally. Can anyone help me?
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If `cA` and `cH` are row vectors, @rayryeng 's solution is correct. As instead, if such arrays are column vectors, you must transpose them using the `'` operator: `out = [cA' cH'];`. By transposing them, of course, they'll become row vectors and then you can perform concatenation as suggested by @rayryeng. – AlessioX Feb 22 '16 at 17:28
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@Alessiox These are images, and so the output of the algorithm are matrices subsampled by a factor of 2. – rayryeng Feb 22 '16 at 17:31