Remove heristical initialization of filter when gaussian filler is used. If heristical initialization is needed, the xavier filler should be used.
Change output file format. For each input sample, the output file is store in following format:
channels
height
width
... #feat
... #feat
...
BUG: Resizing vector<shared_ptr<Blob<Dtype>>> prefetch_meta_data_ before allocating memory for each elememt.