Takes a video and plays it back frame by frame while inverting the image (colors)
This commit is contained in:
commit
097969a3e7
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build/
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*.DS_Store
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cmake_minimum_required(VERSION 3.1)
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PROJECT (video_example)
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set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_SOURCE_DIR}/cmake-modules)
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find_package(OpenCV HINTS /usr/local/opt/opencv /usr/local/Cellar/opencv REQUIRED)
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set( NAME_SRC
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video_example.cpp
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)
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INCLUDE_DIRECTORIES( ${CMAKE_CURRENT_SOURCE_DIR}/include )
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link_directories( ${CMAKE_BINARY_DIR}/bin)
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set(EXECUTABLE_OUTPUT_PATH ${CMAKE_BINARY_DIR}/bin)
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add_executable( video_example ${NAME_SRC} ${NAME_HEADERS} )
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target_link_libraries( video_example ${OpenCV_LIBS} )
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@ -0,0 +1,173 @@
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# ===================================================================================
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# The OpenCV CMake configuration file
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#
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# ** File generated automatically, do not modify **
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#
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# Usage from an external project:
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# In your CMakeLists.txt, add these lines:
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#
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# FIND_PACKAGE(OpenCV REQUIRED)
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# TARGET_LINK_LIBRARIES(MY_TARGET_NAME ${OpenCV_LIBS})
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#
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# Or you can search for specific OpenCV modules:
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#
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# FIND_PACKAGE(OpenCV REQUIRED core imgcodecs)
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#
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# If the module is found then OPENCV_<MODULE>_FOUND is set to TRUE.
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#
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# This file will define the following variables:
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# - OpenCV_LIBS : The list of libraries to link against.
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# - OpenCV_LIB_DIR : The directory(es) where lib files are. Calling LINK_DIRECTORIES
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# with this path is NOT needed.
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# - OpenCV_INCLUDE_DIRS : The OpenCV include directories.
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# - OpenCV_COMPUTE_CAPABILITIES : The version of compute capability
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# - OpenCV_ANDROID_NATIVE_API_LEVEL : Minimum required level of Android API
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# - OpenCV_VERSION : The version of this OpenCV build. Example: "2.4.0"
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# - OpenCV_VERSION_MAJOR : Major version part of OpenCV_VERSION. Example: "2"
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# - OpenCV_VERSION_MINOR : Minor version part of OpenCV_VERSION. Example: "4"
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# - OpenCV_VERSION_PATCH : Patch version part of OpenCV_VERSION. Example: "0"
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#
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# Advanced variables:
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# - OpenCV_SHARED
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# - OpenCV_CONFIG_PATH
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# - OpenCV_LIB_COMPONENTS
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#
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# ===================================================================================
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#
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# Windows pack specific options:
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# - OpenCV_STATIC
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# - OpenCV_CUDA
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if(CMAKE_VERSION VERSION_GREATER 2.6)
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get_property(OpenCV_LANGUAGES GLOBAL PROPERTY ENABLED_LANGUAGES)
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if(NOT ";${OpenCV_LANGUAGES};" MATCHES ";CXX;")
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enable_language(CXX)
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endif()
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endif()
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if(NOT DEFINED OpenCV_STATIC)
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# look for global setting
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if(BUILD_SHARED_LIBS)
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set(OpenCV_STATIC OFF)
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else()
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set(OpenCV_STATIC ON)
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endif()
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endif()
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if(NOT DEFINED OpenCV_CUDA)
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# if user' app uses CUDA, then it probably wants CUDA-enabled OpenCV binaries
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if(CUDA_FOUND)
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set(OpenCV_CUDA ON)
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endif()
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endif()
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if(MSVC)
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if(CMAKE_CL_64)
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set(OpenCV_ARCH x64)
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set(OpenCV_TBB_ARCH intel64)
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elseif((CMAKE_GENERATOR MATCHES "ARM") OR ("${arch_hint}" STREQUAL "ARM") OR (CMAKE_VS_EFFECTIVE_PLATFORMS MATCHES "ARM|arm"))
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# see Modules/CmakeGenericSystem.cmake
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set(OpenCV_ARCH ARM)
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else()
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set(OpenCV_ARCH x86)
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set(OpenCV_TBB_ARCH ia32)
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endif()
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if(MSVC_VERSION EQUAL 1400)
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set(OpenCV_RUNTIME vc8)
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elseif(MSVC_VERSION EQUAL 1500)
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set(OpenCV_RUNTIME vc9)
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elseif(MSVC_VERSION EQUAL 1600)
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set(OpenCV_RUNTIME vc10)
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elseif(MSVC_VERSION EQUAL 1700)
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set(OpenCV_RUNTIME vc11)
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elseif(MSVC_VERSION EQUAL 1800)
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set(OpenCV_RUNTIME vc12)
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elseif(MSVC_VERSION EQUAL 1900)
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set(OpenCV_RUNTIME vc14)
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endif()
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elseif(MINGW)
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set(OpenCV_RUNTIME mingw)
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execute_process(COMMAND ${CMAKE_CXX_COMPILER} -dumpmachine
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OUTPUT_VARIABLE OPENCV_GCC_TARGET_MACHINE
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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if(OPENCV_GCC_TARGET_MACHINE MATCHES "amd64|x86_64|AMD64")
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set(MINGW64 1)
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set(OpenCV_ARCH x64)
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else()
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set(OpenCV_ARCH x86)
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endif()
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endif()
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if(CMAKE_VERSION VERSION_GREATER 2.6.2)
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unset(OpenCV_CONFIG_PATH CACHE)
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endif()
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if(NOT OpenCV_FIND_QUIETLY)
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message(STATUS "OpenCV ARCH: ${OpenCV_ARCH}")
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message(STATUS "OpenCV RUNTIME: ${OpenCV_RUNTIME}")
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message(STATUS "OpenCV STATIC: ${OpenCV_STATIC}")
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endif()
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get_filename_component(OpenCV_CONFIG_PATH "${CMAKE_CURRENT_LIST_FILE}" PATH CACHE)
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if(OpenCV_RUNTIME AND OpenCV_ARCH)
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if(OpenCV_STATIC AND EXISTS "${OpenCV_CONFIG_PATH}/${OpenCV_ARCH}/${OpenCV_RUNTIME}/staticlib/OpenCVConfig.cmake")
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if(OpenCV_CUDA AND EXISTS "${OpenCV_CONFIG_PATH}/gpu/${OpenCV_ARCH}/${OpenCV_RUNTIME}/staticlib/OpenCVConfig.cmake")
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set(OpenCV_LIB_PATH "${OpenCV_CONFIG_PATH}/gpu/${OpenCV_ARCH}/${OpenCV_RUNTIME}/staticlib")
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else()
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set(OpenCV_LIB_PATH "${OpenCV_CONFIG_PATH}/${OpenCV_ARCH}/${OpenCV_RUNTIME}/staticlib")
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endif()
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elseif(EXISTS "${OpenCV_CONFIG_PATH}/${OpenCV_ARCH}/${OpenCV_RUNTIME}/lib/OpenCVConfig.cmake")
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if(OpenCV_CUDA AND EXISTS "${OpenCV_CONFIG_PATH}/gpu/${OpenCV_ARCH}/${OpenCV_RUNTIME}/lib/OpenCVConfig.cmake")
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set(OpenCV_LIB_PATH "${OpenCV_CONFIG_PATH}/gpu/${OpenCV_ARCH}/${OpenCV_RUNTIME}/lib")
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else()
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set(OpenCV_LIB_PATH "${OpenCV_CONFIG_PATH}/${OpenCV_ARCH}/${OpenCV_RUNTIME}/lib")
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endif()
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endif()
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endif()
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if(OpenCV_LIB_PATH AND EXISTS "${OpenCV_LIB_PATH}/OpenCVConfig.cmake")
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set(OpenCV_LIB_DIR_OPT "${OpenCV_LIB_PATH}" CACHE PATH "Path where release OpenCV libraries are located" FORCE)
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set(OpenCV_LIB_DIR_DBG "${OpenCV_LIB_PATH}" CACHE PATH "Path where debug OpenCV libraries are located" FORCE)
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set(OpenCV_3RDPARTY_LIB_DIR_OPT "${OpenCV_LIB_PATH}" CACHE PATH "Path where release 3rdparty OpenCV dependencies are located" FORCE)
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set(OpenCV_3RDPARTY_LIB_DIR_DBG "${OpenCV_LIB_PATH}" CACHE PATH "Path where debug 3rdparty OpenCV dependencies are located" FORCE)
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include("${OpenCV_LIB_PATH}/OpenCVConfig.cmake")
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if(OpenCV_CUDA)
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set(_OpenCV_LIBS "")
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foreach(_lib ${OpenCV_LIBS})
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string(REPLACE "${OpenCV_CONFIG_PATH}/gpu/${OpenCV_ARCH}/${OpenCV_RUNTIME}" "${OpenCV_CONFIG_PATH}/${OpenCV_ARCH}/${OpenCV_RUNTIME}" _lib2 "${_lib}")
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if(NOT EXISTS "${_lib}" AND EXISTS "${_lib2}")
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list(APPEND _OpenCV_LIBS "${_lib2}")
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else()
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list(APPEND _OpenCV_LIBS "${_lib}")
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endif()
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endforeach()
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set(OpenCV_LIBS ${_OpenCV_LIBS})
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endif()
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set(OpenCV_FOUND TRUE CACHE BOOL "" FORCE)
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set(OPENCV_FOUND TRUE CACHE BOOL "" FORCE)
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if(NOT OpenCV_FIND_QUIETLY)
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message(STATUS "Found OpenCV ${OpenCV_VERSION} in ${OpenCV_LIB_PATH}")
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if(NOT OpenCV_LIB_PATH MATCHES "/staticlib")
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get_filename_component(_OpenCV_LIB_PATH "${OpenCV_LIB_PATH}/../bin" ABSOLUTE)
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file(TO_NATIVE_PATH "${_OpenCV_LIB_PATH}" _OpenCV_LIB_PATH)
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message(STATUS "You might need to add ${_OpenCV_LIB_PATH} to your PATH to be able to run your applications.")
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if(OpenCV_LIB_PATH MATCHES "/gpu/")
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string(REPLACE "\\gpu" "" _OpenCV_LIB_PATH2 "${_OpenCV_LIB_PATH}")
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message(STATUS "GPU support is enabled so you might also need ${_OpenCV_LIB_PATH2} in your PATH (it must go after the ${_OpenCV_LIB_PATH}).")
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endif()
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endif()
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endif()
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else()
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if(NOT OpenCV_FIND_QUIETLY)
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message(WARNING
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"Found OpenCV Windows Pack but it has no binaries compatible with your configuration.
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You should manually point CMake variable OpenCV_DIR to your build of OpenCV library."
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)
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endif()
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set(OpenCV_FOUND FALSE CACHE BOOL "" FORCE)
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set(OPENCV_FOUND FALSE CACHE BOOL "" FORCE)
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endif()
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@ -0,0 +1,6 @@
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#!/bin/bash
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mkdir -p build
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cd build
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cmake ..
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make -j
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#include <iostream>
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#include <opencv2/opencv.hpp>
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#include <sys/stat.h>
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#include <string>
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#include <vector>
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#include <algorithm>
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using namespace std;
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using namespace cv;
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std::vector<std::string> supportedExt = {
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"mp4", "MP4",
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"mov", "MOV",
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"mkv", "MKV"
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};
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inline bool in_array(const std::string &value, const std::vector<std::string> &array)
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{
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return std::find(array.begin(), array.end(), value) != array.end();
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}
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inline bool file_exists (const std::string& name)
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{
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struct stat buffer;
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return (stat (name.c_str(), &buffer) == 0);
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}
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inline bool is_video (const std::string& name)
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{
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string ext = name.substr(name.find_last_of(".") + 1);
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return in_array(ext, supportedExt);
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}
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int main(int argc, char** argv)
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{
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Mat image;
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Mat inverted;
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string input;
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if (argc == 2)
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{
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input = argv[1];
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}
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else if (argc < 2)
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{
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cerr << "Please provide one video." << endl;
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return -1;
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}
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else if (argc > 2)
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{
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cerr << "Please provide only one video." << endl;
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return -2;
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}
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if (!file_exists(input))
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{
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cerr << "File " << input << " does not exist." << endl;
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return -3;
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}
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if (!is_video(input))
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{
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cerr << "File " << input << " is not a valid video." << endl;
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return -4;
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}
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VideoCapture cap(input);
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int frameNumbers = (int)cap.get(CAP_PROP_FRAME_COUNT);
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double fps = cap.get(CAP_PROP_FPS);
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cout << frameNumbers << endl;
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cout << fps << endl;
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if (cap.isOpened() == false) {
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cerr << "Cannot open the video file " << input << "." << endl;
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return -5;
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}
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cout << "Using video " << input << "." << endl;
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while(1)
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{
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Mat frame;
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Mat inverted;
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cap >> frame;
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if (frame.empty())
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{
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break;
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}
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bitwise_not(frame, inverted);
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imshow( "Video", inverted );
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char c= (char) waitKey(25);
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if (c == 27)
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{
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break;
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}
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}
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cap.release();
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destroyAllWindows();
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return 0;
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}
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