I think cv.fromarray leaks memory (Bug #493)

See also #489

Someway, asking for the objects which reference a after each fromarray call will stop the memleak.

from numpy import * 
import cv,gc
a = ndarray((400,600,3)) 
while True: 
 mat = cv.fromarray(a) 
 gc.get_referrers(a)

I'm sorry, it only slows it down, but does not remove the leak.

I think I found the problem.
At the beginning of fromarray(PyObject *o, int allowND), cv.cpp:2790, there is a call to

Is a new python object. Since ao is only used inside the fromarray function, it's fromarray responsibility to free the memory used by ao.

A possible solution would be to insert this line befor the return statement (2850):
<pre>
     Py_DECREF(ao);
     return pythonize_foreign_CvMat(m);
</pre>
But if for any reason fromarray exits before decreasing the refcount of ao, the memory would be leaken again. 
I'm totally new to opencv so I don't know which is the best way to solve this problem: insert a decref before each possible function return?

See #499 for a partial solution.

Many thanks!!! this solve mi memory issue