liviust / caffe-utils

Additional scripts for caffe

caffe-utils

##Additional scripts for caffe

###extract_to_txt.cpp

This script was made for extracting features from caffe to plain text format or to libsvm format. The script can be used as follows:

extract_to_txt \  
  <train|test> \  
  <path_to_weight_file> \  
  <path_to_model_prototxt> \  
  <path_to_output_file> \  
  <blob_name> \  
  <n_mini_batches> \  
  <output_format> \  
  [CPU/GPU] \  
  [DEVICE_ID=0]

The GPU arguments are optional. I recommend writing a bash script file were you put your parameter configuration for calling the script.

EXAMPLE: For extracting the features of layer fc7 of the train set to libsvm format you can do:

extract_to_txt \
  train \
  model.caffemodel \
  train_val.prototxt \
  features.txt \
  fc7 \
  100 \
  libsvm \
  GPU \
  0

This will extract 100 mini batches. If your network has a batch size of 128 the call above will extract the features of 100 * 128 images.

IMPORTANT NOTES:

• The script assumes that the network has defined a label blob.
• You can add this script to $CAFFE_ROOT/tools and recompile caffe after which you can find the script in $CAFFE_ROOT/build/tools

LIBSVM:

• For downloading libsvm, check out: http://www.csie.ntu.edu.tw/~cjlin/libsvm/