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The wavelet transform example uses 'db2' filter which can be find in below link:
According to the wavelet transform examples, I get the 'db4' filter values from matlab using wfilters('db4') command.
The length of Lo_D,Hi_D,Lo_R,Hi_R is 8, so I define
static const int fwdFltLenL = 8;
static const int fwdFltLenH = 8;
....
And copy the values from matlab:
static const float fwdFltL[8] = {-0.0106......};
...................
Other code are the same with the example.
....
ippsWTFwd_32f (src, low, high, 6, state);
........
But the low and high values are not equal to the values get by matlab.
So how to create a 'db4' wavelet transform?
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Hi,
could you be more specific - please provide reproducibles - *.m file for Matlab and *.c(or *.cpp) for IPP - that can be built and executed. And please provide a difference - what is expected and what you see.
Regards, Igor
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