Library not found

[ARUNSOORAJPS]

'libSubsense' is not found inside the python folder. Should I do anything to create the library file?

File "C:/Users/ics02517.AD001/Documents/Python Scripts/Object Tracking/subsense-master/Python/Subsense.py", line 28, in init
self.lib_subsense = np.ctypeslib.load_library(LIB_NAME, LIB_PATH)

File "C:\Anaconda\lib\site-packages\numpy\ctypeslib.py", line 128, in load_library
raise OSError("no file with expected extension")

OSError: no file with expected extension

[tiahflorens]

I have a same problem here... What should I do? I tried to cmake in the subsense root directory but libSunsesce doesn't created.

[ewanlee]

So... There is someone has solved this problem ?

[marcoruizrueda]

I had a lot of problems too... Finally It compiled in this way:

1. Add the find_package command in My CmakeList.txt
basically I only added a find_package instruction, you can delete some lines there if you want.

---

SET(PROJECT_NAME Subsense)
PROJECT(${PROJECT_NAME})
CMAKE_MINIMUM_REQUIRED (VERSION 2.8.3)

find_package( OpenCV REQUIRED )

set(EXTRA_INC_DIRS
/usr/local/include
)

LIST(APPEND LINK_LIBS
opencv_core
opencv_video
opencv_features2d
opencv_imgproc
)

set(SS_DIR ${CMAKE_CURRENT_SOURCE_DIR})

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Ofast")

if(APPLE)
set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
set(CMAKE_INSTALL_NAME_DIR ${CMAKE_INSTALL_PREFIX}/lib)
set(CMAKE_MACOSX_RPATH ON)
set(CMAKE_SKIP_BUILD_RPATH FALSE)
set(CMAKE_BUILD_WITH_INSTALL_RPATH FALSE)
set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib")
set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
endif()

file(GLOB LIB_SRC_FILES ${SS_DIR}/Subsense/*.cpp)
include_directories(${SS_DIR} ${EXTRA_INC_DIRS})

add_library(Subsense SHARED ${LIB_SRC_FILES})
target_link_libraries(Subsense ${LINK_LIBS})

2. Comment the lines 39-41 in the BackgroundSubtractorLBSP.cpp file as follows:
//cv::AlgorithmInfo* BackgroundSubtractorLBSP::info() const { //return nullptr; //}

3. Comment the line 29 in BackgroundSubtractorLBSP.h file:
//virtual cv::AlgorithmInfo* info() const;

**4. Locate the compiled libSubsense.so file together with the python script.
That's all.

[yashwantram]

@marcoruizrueda No brow... Getting the error even after trying out the above solutin

[marcoruizrueda]

@marcoruizrueda No brow... Getting the error even after trying out the above solutin

Do not forget to locate the libSubsense.so file in the same folder as the python script. I tried on Ubuntu 16.04 and CMake 2.8. Good luck.

[yashwantram]

@marcoruizrueda where is the file called libSubsense.so file, i can find it. And you want out to put that file inside the Python folder

And i am using Ubuntu 18.04 and Cmake 3.10. It will great full if you help me

[marcoruizrueda]

libSubsense.so

From compilation with cmake, you are going to get the compiled file (libSubsense.so) that you have to put together with the python script. Please follow my 4 instructions faithfully and comment the results.

[yashwantram]

@marcoruizrueda Sorry i can't locate the libSubsense.so file in my system... So what should i do now?

[yashwantram]

@marcoruizrueda Sorry i can't locate the libSubsense.so file in my system... So what should i do now?

[yashwantram]

@marcoruizrueda Sorry i can't locate the libSubsense.so file in my system... So what should i do now?

[marcoruizrueda]

@marcoruizrueda Sorry i can't locate the libSubsense.so file in my system... So what should i do now?

So, set the file path in variable "LIB_PAT" in the python script, with the location of your compiled libSubsense.so file. It can be a remote location. So, that is the core problem, the file is not being found.

[yashwantram]

@marcoruizrueda I searched completely there is no file called libSubsense.so . Should i compile something to generate that file. And the variable name is LIB_PATH right?

[yashwantram]

@marcoruizrueda The fault was i dint make the Cmakelist.txt . After that process its working super fine. Thank you

[marcoruizrueda]

@marcoruizrueda The fault was i dint make the Cmakelist.txt . After that process its working super fine. Thank you

Your welcome brow. Good luck.

[CaoZhonglei]

The system could not find the specified file: Subsense. dll.
What should I do in this case?