Is there a tutorial on how to use CLSTM instead of the python lstm in ocropy

[midhunharikumar]

I'm trying to use the C++ version CLSTM in ocropy . i tried building the python parts using setup.py but it throws errors

`~/OCROpus/clstm$ python2 setup.py build
PY_CORE_CFLAGS -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -D_FORTIFY_SOURCE=2 -g -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security -I. -IInclude -I../Include -fPIC -DPy_BUILD_CORE
BLDSHARED x86_64-linux-gnu-gcc -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions -Wl,-Bsymbolic-functions -Wl,-z,relro -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -D_FORTIFY_SOURCE=2 -g -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security
LDCXXSHARED c++ -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions
LDFLAGS -Wl,-Bsymbolic-functions -Wl,-z,relro
TESTPYTHON LD_LIBRARY_PATH=/build/buildd/python2.7-2.7.6/build-shared: ./python -Wd -3 -E -tt
CONFIG_ARGS '--enable-shared' '--prefix=/usr' '--enable-ipv6' '--enable-unicode=ucs4' '--with-dbmliborder=bdb:gdbm' '--with-system-expat' '--with-system-ffi' '--with-fpectl' 'CC=x86_64-linux-gnu-gcc' 'CFLAGS=-D_FORTIFY_SOURCE=2 -g -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security ' 'LDFLAGS=-Wl,-Bsymbolic-functions -Wl,-z,relro'
CONFIGURE_CFLAGS -D_FORTIFY_SOURCE=2 -g -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security
LDSHARED x86_64-linux-gnu-gcc -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions -Wl,-Bsymbolic-functions -Wl,-z,relro -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -D_FORTIFY_SOURCE=2 -g -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security
CONFIGURE_LDFLAGS -Wl,-Bsymbolic-functions -Wl,-z,relro
OPT -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes
PY_LDFLAGS -Wl,-Bsymbolic-functions -Wl,-z,relro
LINKFORSHARED -Xlinker -export-dynamic -Wl,-O1 -Wl,-Bsymbolic-functions
PY_CFLAGS -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -D_FORTIFY_SOURCE=2 -g -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security
CFLAGS -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -D_FORTIFY_SOURCE=2 -g -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security
running build
running build_py
copying clstm.py -> build/lib.linux-x86_64-2.7
running build_ext
building '_clstm' extension
swigging clstm.i to clstm_wrap.cpp
swig -python -c++ -I/usr/include/eigen3 -I/usr/local/include/eigen3 -I/usr/local/include -I/usr/include/hdf5/serial -I/usr/lib/python2.7/dist-packages/numpy/core/include -o clstm_wrap.cpp clstm.i
C compiler: x86_64-linux-gnu-gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -fPIC

compile options: '-I/usr/include/eigen3 -I/usr/local/include/eigen3 -I/usr/local/include -I/usr/include/hdf5/serial -I/usr/lib/python2.7/dist-packages/numpy/core/include -I/usr/include/python2.7 -c'
extra options: '-std=c++11 -Wno-sign-compare -Dadd_raw=add -DNODISPLAY=1 -DTHROW=throw -DHGVERSION=""unknown""'
x86_64-linux-gnu-gcc: ctc.cc
x86_64-linux-gnu-gcc: clstm_wrap.cpp
clstm_wrap.cpp: In function ‘PyObject* wrap_Batch_resize(PyObject, PyObject_)’:
clstm_wrap.cpp:6253:15: error: ‘struct ocropus::Batch’ has no member named ‘resize’
(arg1)->resize(arg2,arg3);
^
clstm_wrap.cpp: In function ‘PyObject* wrap_Batch_setZero(PyObject, PyObject_)’:
clstm_wrap.cpp:6304:15: error: ‘struct ocropus::Batch’ has no member named ‘setZero’
(arg1)->setZero(arg2,arg3);
^
clstm_wrap.cpp: In function ‘PyObject* wrap_Batch_resize(PyObject, PyObject_)’:
clstm_wrap.cpp:6253:15: error: ‘struct ocropus::Batch’ has no member named ‘resize’
(arg1)->resize(arg2,arg3);
^
clstm_wrap.cpp: In function ‘PyObject* wrap_Batch_setZero(PyObject, PyObject_)’:
clstm_wrap.cpp:6304:15: error: ‘struct ocropus::Batch’ has no member named ‘setZero’
(arg1)->setZero(arg2,arg3);
^
error: Command "x86_64-linux-gnu-gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -fPIC -I/usr/include/eigen3 -I/usr/local/include/eigen3 -I/usr/local/include -I/usr/include/hdf5/serial -I/usr/lib/python2.7/dist-packages/numpy/core/include -I/usr/include/python2.7 -c clstm_wrap.cpp -o build/temp.linux-x86_64-2.7/clstm_wrap.o -std=c++11 -Wno-sign-compare -Dadd_raw=add -DNODISPLAY=1 -DTHROW=throw -DHGVERSION=""unknown""" failed with exit status 1
`

Thats the output from console .

[tmbdev]

You don't need to build the Python interface in order to use CLSTM as part of ocropy; you simply run clstmocr and clstmocrtrain instead of ocropus-rpred and ocropus-rtrain. Note that the command line options are different, but both take image files of text lines as inputs and produce text files as output.

[kba]

We should document this in ocropy