Use OpenCV To Make Picture Brighter

Gamma correction is a very useful method to make the original image brighter. It is a non-linear transform for every input value, the relevant math equation is in the following section. O:output value I:input value #include <stdio.h> #include <opencv2/opencv.hpp> using namespace cv; int main(int argc, char** argv ) { Mat Read more…

Simple Examples For Handling Images With OpenCV

The original image and project are in the following part. CMakeLists.txt macro(use_cxx11) if (CMAKE_VERSION VERSION_LESS “3.1”) if (CMAKE_CXX_COMPILER_ID STREQUAL “GNU”) set (CMAKE_CXX_FLAGS “${CMAKE_CXX_FLAGS} -std=gnu++11”) endif () else () set (CMAKE_CXX_STANDARD 11) endif () endmacro(use_cxx11) cmake_minimum_required(VERSION 2.8) project( cvMat ) use_cxx11() find_package( OpenCV REQUIRED ) add_executable( ${PROJECT_NAME} “main.cpp” ) target_link_libraries( ${PROJECT_NAME} Read more…

Install And Run OpenCV On Mac

Learn from website:https://sites.google.com/site/yonasstephenfyp2013/updates/tutorialinstallingopencvonmacosxmountainlionDownload opencv-4.0.1 compressed file and extract it, then go into it and build project. mkdir opencv_build cd opencv_build cmake -G “Unix Makefiles” ../ Generate Makefile successfully: — Found JNI: /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/System/Library/Frameworks/JavaVM.framework — Found VTK 8.1.1 (/usr/local/lib/cmake/vtk-8.1/UseVTK.cmake) — Looking for dlerror in dl — Looking for dlerror in dl – Read more…

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