iphone - OCR using openCV

Question

I wants to give effects on image using openCV, I am struggling from last 2 days and do little bit from my side. But not get the good output. Till now I only convert into gray. how to achieve remaining effects?

I use this method for convert in Gray

- (void)blackAndWhite {


cv::Mat  dst;

cv::Mat src=[self cvMatFromUIImage:iv.image];


if( !src.data )
{ std::cout<<"Usage: ./Histogram_Demo <path_to_image>"<<std::endl;
}

/// Convert to grayscale
cvtColor( src, src, CV_BGR2GRAY );

/// Apply Histogram Equalization
//equalizeHist( src, dst );

iv.image =[self UIImageFromCVMat:src];   



}

Thanks

1) After convert in GRAY

2) Apply Black and White effect

3) Remove dark black background and change image orientation.

Answer 1

Waitting for answers