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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());
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Parameters
| Name
|
Type
|
Description
|
| src
|
CuviImage&
|
Input 3 channel image
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| 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
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| 32fC3
|
32fC1
|
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Sample
Error creating thumbnail: Unable to save thumbnail to destination
Color Image
Error creating thumbnail: Unable to save thumbnail to destination
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);
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