extract_features.sh
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#!/bin/bash
# Copyright 2017 Yiwen Shao
# 2018 Ashish Arora
# Apache 2.0
# This script runs the make features script in parallel.
nj=4
cmd=run.pl
feat_dim=40
augment='no_aug'
fliplr=false
echo "$0 $@"
. ./cmd.sh
. ./path.sh
. ./utils/parse_options.sh || exit 1;
data=$1
featdir=$data/data
scp=$data/images.scp
logdir=$data/log
mkdir -p $logdir
mkdir -p $featdir
# make $featdir an absolute pathname
featdir=`perl -e '($dir,$pwd)= @ARGV; if($dir!~m:^/:) { $dir = "$pwd/$dir"; } print $dir; ' $featdir ${PWD}`
for n in $(seq $nj); do
split_scps="$split_scps $logdir/images.$n.scp"
done
# split images.scp
utils/split_scp.pl $scp $split_scps || exit 1;
$cmd JOB=1:$nj $logdir/extract_features.JOB.log \
image/ocr/make_features.py $logdir/images.JOB.scp \
--allowed_len_file_path $data/allowed_lengths.txt \
--num-channels 4 \
--feat-dim $feat_dim --fliplr $fliplr --augment_type $augment \| \
copy-feats --compress=true --compression-method=7 \
ark:- ark,scp:$featdir/images.JOB.ark,$featdir/images.JOB.scp
## aggregates the output scp's to get feats.scp
for n in $(seq $nj); do
cat $featdir/images.$n.scp || exit 1;
done > $data/feats.scp || exit 1