golang ./opencv.h:10:10: fatal error: opencv/cv.h: No such file or directory

This error occurs when the compiler is unable to find the header file "opencv/cv.h" which is required for the program to compile successfully.

To resolve this error, you need to make sure that OpenCV is installed on your system and the correct header files are included in the search path.

Here are the steps to install OpenCV on Ubuntu:

1. Open a terminal window and run the following command to update the package list:

`sudo apt-get update`

2. Install the required dependencies by running the following command:

`sudo apt-get install build-essential cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev`

3. Clone the OpenCV repository by running the following command:

`git clone https://github.com/opencv/opencv.git`

4. Navigate to the OpenCV directory and create a build directory:

`cd opencv`

`mkdir build`

`cd build`

5. Configure the OpenCV build by running the following command:

`cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local ..`

6. Compile OpenCV by running the following command:

`make -j4`

7. Install OpenCV by running the following command:

`sudo make install`

Once OpenCV is installed, you need to make sure that the correct header files are included in the search path. You can do this by adding the following line to your code:

`#include <opencv2/opencv.hpp>`

This should resolve the "opencv/cv.h: No such file or directory" error.