 | 1 | initial version |
This is using the default (CV_PI*0.5,) phase offset getGaborKernel(size, 8.0, 0.0, 16.0, 1.0);
This is using a zero phase offset getGaborKernel(size, 8.0, 0.0, 16.0, 1.0, 0.0);
So it seems that default phase offset (90 deg) removes the symmetry of the Gabor kernel. I have seen some other references where they use the same offset so I guess its standard conversion.
Why is this the default? Is it generally more useful to have this for feature extraction?
| | 2 | No.2 Revision |
This is using the default (CV_PI*0.5,) phase offset getGaborKernel(size, 8.0, 0.0, 16.0, 1.0);
This is using a zero phase offset getGaborKernel(size, 8.0, 0.0, 16.0, 1.0, 0.0);
So it seems that default phase offset (90 deg) removes the symmetry of the Gabor kernel. I have seen some other references where they use the same offset so I guess its standard conversion.
Why is this the default? Is it generally more useful to have this for feature extraction?
