Get RGB pixels from input image and reconstruct an output image in opencv

Question

I want to load the image in opencv and split the image into channels(RGB) and i want to increase any one of the colors and getting that corresponding output image.is there a

Answer 1

Well to add any scalar to an RGB image you can use cvAddS(srcImage, scalarToAdd, dstImage). Here is an example:

int main(int argc, char** argv)

{
// Create a named window with the name of the file.
cvNamedWindow( argv[1], 1 );
// Load the image from the given file name.
IplImage* img = cvLoadImage( argv[1] );
//Make a scalar to add 30 to Blue Color and 20 to Red (BGR format)
CvScalar colorAdd = cvScalar(30.0, 0, 20.0);
cvAddS(img, colorAdd, img);
// Show the image in the named window
cvShowImage( argv[1], img );
// Idle until the user hits the “Esc” key.
while( 1 ) {
if( cvWaitKey( 100 ) == 27 ) break;
}
cvDestroyWindow( argv[1] );
cvReleaseImage( &img );
exit(0);
}

Haven't tested the code, hope it helps.