cvMat by Column Access about ctypes-opencv HOT 3 CLOSED

Thank you for having raised the issue. I can reproduce the problem. I will fix 
it as
soon as I can. Meanwhile, here is the quick fix on your installation:

1) Open file cxcore.py in ctypes-opencv's installation folder (i.e. <python's 
Lib
folder>/site-packages/opencv)
2) Replace line 743 containing:
        data_address = addressof(self.data.ptr.contents)+self.step*sy.start+sx.start
with:
        datatype = type2ctype(self.type)
        data_address =
addressof(self.data.ptr.contents)+self.step*sy.start+sx.start*sizeof(datatype)

It should solve the problem.

Minh-Tri

I applied the patch you suggested and it works like a charm.

Many thanks for creating this great wrapper and actively maintaining it.  It 
has really saved me from a hell of a 
mess dealing with the SWIG wrapper...

Fixed. Thanks.