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View Code? Open in Web Editor NEWa Simple Library for Image Processing
License: GNU General Public License v2.0
a Simple Library for Image Processing
License: GNU General Public License v2.0
The following code throws an error message:
imgsize = 51
blankimg = np.zeros((imgsize, imgsize), dtype=np.uint8)
lg = LogGabor(parameterfile)
lg.set_size(blankimg)
scales = 4
angles = 4
params = {'B_sf': 1 / (4*scales) * np.log(imgsize),
'B_theta': np.pi / (2*angles),
'sf_0': np.power(imgsize, 5/(2*scales)) / (2*imgsize),
'theta': 0}
filt = lg.loggabor(0, 0, **params)
Here is the error message:
[...]/LogGabor/LogGabor.py:142: RuntimeWarning: divide by zero encountered in true_divide
env = 1./self.f*np.exp(-.5*(np.log(self.f/sf_0)**2)/B_sf**2)
[...]/LogGabor/LogGabor.py:142: RuntimeWarning: divide by zero encountered in log
env = 1./self.f*np.exp(-.5*(np.log(self.f/sf_0)**2)/B_sf**2)
[...]/LogGabor/LogGabor.py:142: RuntimeWarning: invalid value encountered in multiply
env = 1./self.f*np.exp(-.5*(np.log(self.f/sf_0)**2)/B_sf**2)
The cause of the error is that lg.f
contains a zero. The pull request that I'm about to make resolves this issue; it's an off-by-one error in SLIP.
Best wishes,
Julian
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