MTCNN-Caffe（三）生成lmdb

 #!/usr/bin/env sh
 # Create the imagenet lmdb inputs
 # N.B. set the path to the imagenet train + val data dirs
 EXAMPLE=.
 TOOLS=/data2/zxli/CODE/caffe_multilabel/build/tools
 DATA=.
 TRAIN_DATA_ROOT=/.
 VAL_DATA_ROOT=/.
 # Set RESIZE=true to resize the images to 256x256. Leave as false if images have
 # already been resized using another tool.
 RESIZE=true
 if $RESIZE; then
    RESIZE_HEIGHT=24
    RESIZE_WIDTH=24
 else
    RESIZE_HEIGHT=0
    RESIZE_WIDTH=0
 fi
 if [ ! -d "$TRAIN_DATA_ROOT" ]; then
   echo "Error: TRAIN_DATA_ROOT is not a path to a directory: $TRAIN_DATA_ROOT"
   echo "Set the TRAIN_DATA_ROOT variable in create_imagenet.sh to the path" \
       "where the ImageNet training data is stored."
   exit 1
 fi
 if [ ! -d "$VAL_DATA_ROOT" ]; then
    echo "Error: VAL_DATA_ROOT is not a path to a directory: $VAL_DATA_ROOT"
    echo "Set the VAL_DATA_ROOT variable in create_imagenet.sh to the path" \
       "where the ImageNet validation data is stored."
 exit 1
 fi
 echo "Creating train lmdb..."
 GLOG_logtostderr=1 $TOOLS/convert_imageset_multilabel \
    --resize_height=$RESIZE_HEIGHT \
    --resize_width=$RESIZE_WIDTH \
     $TRAIN_DATA_ROOT \
      $DATA/train_list.txt \
     $EXAMPLE/mtcnn_train_20190121_lmdb
 
 echo "Creating val lmdb..."
 GLOG_logtostderr=1 $TOOLS/convert_imageset_multilabel \
    --resize_height=$RESIZE_HEIGHT \
    --resize_width=$RESIZE_WIDTH \
      $VAL_DATA_ROOT \
      $DATA/val_list.txt \
     $EXAMPLE/mtcnn_val_20190121_lmdb
 
 echo "Done."

用于生成lmdb以便后续训练使用

2  对一下shell语言的理解

(1) $在脚本语言中代表一个变量，例如$var 即可以调用var变量,也可以用来输出变量的值

(2)使用if-then语句和test命令

(2.1)基本结构化命令if-then语句格式:

if  command

then

    command

fi

(2.2)test命令

if[condition]

then command

fi

(2.2.1)判断整数：整数1 -eq 整数2 判断整数1与2是否相等；整数1 -ge 整数2 判断整数1是否大于等于整数2；

                            整数1 -gt 整数2  判断整数1大于整数2；整数1 -le整数2 判断整数1是否小于等于整数2

(2.2.2)判断字符串： -n str1 判断str1的长度为非0；-z str2 判断str2的长度为0；

(2.2.3)判断文件：-d FIle文件存在且是目录；-e File 文件存在

参考博客：https://blog.csdn.net/weixin_36586564/article/details/78843172

3  ubuntu下常用命令

(1)按照时间升序排序文件夹 ls -lrt  （l表示以长列表方式显示，t按修改时间排序，r reverse order whilt sorting）

(2)按照时间降序排序文件夹 ls -lt