refactored convolution
refactored convolution

cvondrick/pyvision,WangDequan/pyvision,cvondrick/pyvision,cvondrick/pyvision,weiliu89/pyvision,weiliu89/pyvision,cvondrick/pyvision,weiliu89/pyvision,WangDequan/pyvision,weiliu89/pyvision,WangDequan/pyvision,WangDequan/pyvision