The length of the coefficient obtained from DWT2 is sx/2 for the dwtmode value 'sym' and it is (sx+If-1)/2 for the rest of the modes. In the help for this function, instead of 'sym' it is specified for the mode 'per', though in the Wavelet Toolbox, the formula for length of the coefficient is correctly implemeted. The actual formula is given in the book: Wavelets and Filter Banks by Gilbert Strang/Truong Nguyen, chapter 8.2.
MATLAB: Do the values of the length of DWT2 coefficients for different modes (as specified in the help) differ from the actual formula
bordercoefficientdistortiondwt2dwtmodelengthpersymwaveletWavelet Toolbox
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