Function:RGB2Gray

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Converts an RGB image to gray scale using fixed or custom transform coefficients

Function

CuviStatus rgb2gray(const CuviImage& src,
                    CuviImage& dst,
                    const CuviStream& stream = CuviStream());
 
CuviStatus rgb2gray(const CuviImage& src,
                    CuviImage& dst,
                    const CuviScalar& coeffs,
                    const CuviStream& stream = CuviStream());


Parameters

Name Type Description
src CuviImage& Input 3 channel image
dst CuviImage& Output single channel image
coeffs CuviScalar& Custom transformation coefficients
stream CuviStream& GPU stream ID for execution


Image Type Support

Input Output
8uC3 8uC1
16uC3 16uC1
32fC3 32fC1

Sample

Color Image
Output Gray Image


Example

CuviImage gimg = cuvi::io::loadImage(path), gout;
 
//Convert to gray-scale using standard coefficients
cuvi::colorOperations::rgb2gray(gimg,gout);
 
//Convert to gray-scale using custom coefficients
CuviScalar coeffs(0.33, 0.33, 0.33);
cuvi::colorOperations::rgb2gray(gimg,gout, coeffs);