caffe报错：Check failed: width ＜= datum

使用caffe建立模型的时候需要转换LMDB格式，但转换完成进行训练的时候却会报错Check failed。这个错误的原因是图片大小不匹配。在之前我一直以为在转换之前要把所有图片大小转换为目标尺寸，于是自己写了一个脚本把所有图片大小转换。但还是有纰漏的地方，今天发现一个更好的方法，记录下来！
其实也很简单：就是把大小修改放在转换lmdb的脚本中，在脚本中添加如下语句：

RESIZE=true
if $RESIZE; thenRESIZE_HEIGHT=28RESIZE_WIDTH=28
elseRESIZE_HEIGHT=0RESIZE_WIDTH=0
fi

再把下面训练集和测试集resize_height和resize_width参数换成上文的变量即可。

GLOG_logtostderr=1 $TOOLS/convert_imageset \--resize_height=$RESIZE_HEIGHT \--resize_width=$RESIZE_WIDTH \--shuffle \$TRAIN_DATA_ROOT \$DATA/train.txt \$EXAMPLE/TibetanWord_train_lmdb

发现了这个方法，觉得以前憨憨的。以后就用这个啦！

文末附完整代码：

#!/usr/bin/env sh
# Create the imagenet lmdb inputs
# N.B. set the path to the imagenet train + val data dirs
set -eEXAMPLE=examples/TibetanWord
DATA=examples/TibetanWord
TOOLS=build/tools#TRAIN_DATA_ROOT=/home/user/caffe/examples/TibetanWord/train/
TRAIN_DATA_ROOT=examples/TibetanWord/
#VAL_DATA_ROOT=/home/user/caffe/examples/TibetanWord/test/
VAL_DATA_ROOT=examples/TibetanWord/rm -rf $EXAMPLE/TibetanWord_train_lmdb
rm -rf $EXAMPLE/TibetanWord_test_lmdb# Set RESIZE=true to resize the images to 256x256. Leave as false if images have
# already been resized using another tool.
RESIZE=true
if $RESIZE; thenRESIZE_HEIGHT=28RESIZE_WIDTH=28
elseRESIZE_HEIGHT=0RESIZE_WIDTH=0
fiif [ ! -d "$TRAIN_DATA_ROOT" ]; thenecho "Error: TRAIN_DATA_ROOT is not a path to a directory: $TRAIN_DATA_ROOT"echo "Set the TRAIN_DATA_ROOT variable in create_imagenet.sh to the path" \"where the ImageNet training data is stored."exit 1
fiif [ ! -d "$VAL_DATA_ROOT" ]; thenecho "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
fiecho "Creating train lmdb..."GLOG_logtostderr=1 $TOOLS/convert_imageset \--resize_height=$RESIZE_HEIGHT \--resize_width=$RESIZE_WIDTH \--shuffle \$TRAIN_DATA_ROOT \$DATA/train.txt \$EXAMPLE/TibetanWord_train_lmdbecho "train finish"
echo "Creating val lmdb..."GLOG_logtostderr=1 $TOOLS/convert_imageset \--resize_height=$RESIZE_HEIGHT \--resize_width=$RESIZE_WIDTH \--shuffle \$VAL_DATA_ROOT \$DATA/test.txt \$EXAMPLE/TibetanWord_test_lmdbecho "Done."

由于作者水平有限，如有错误，请在下方评论区指正，谢谢！

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caffe报错：Check failed: width ＜= datum_width (28 vs. 17)

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