Difference between revisions of "Function:RGBA2Gray"

Latest revision as of 08:52, 19 April 2013

Converts an RGBA image to gray scale using fixed transform

CuviStatus rgba2gray(const CuviImage& src,
                     CuviImage& dst,
                     const CuviStream& stream = CuviStream());

Input	Output
8uC4	8uC1
16uC4	16uC1

CuviImage gimg = cuvi::io::loadImage(path,CUVI_LOAD_IMAGE_DEFAULT), gout;


//function call
cuvi::colorOperations::rgba2gray(gimg,gout);

@@ Line 5: / Line 5: @@
 |style="font-size:150%;"|
 <syntaxhighlight lang="cpp">
-CuviStatus RGBA2Gray(CuviImage* srcImage,
+CuviStatus rgba2gray(const CuviImage& src,
-                      CuviImage* dstImage,
+                      CuviImage& dst,
-                      CuviStream* stream = NULL);
+                      const CuviStream& stream = CuviStream());
 </syntaxhighlight>
 |}
@@ Line 20: / Line 20: @@
 ! Description
 |-
-| srcImage
+| src
-| CuviImage*
+| const CuviImage&
 | Input 4-channel image
 |-
-| dstImage
+| dst
-| CuviImage*
+| CuviImage&
 | Output single channel image
 |-
 | stream
-| CuviStream*
+| const CuviStream&
 | GPU stream ID for execution
@@ Line 56: / Line 56: @@
 <syntaxhighlight lang="cpp">
-CuviImage* gimg = new CuviImage(size,img->depth,img->nChannels);
+CuviImage gimg = cuvi::io::loadImage(path,CUVI_LOAD_IMAGE_DEFAULT), gout;
-CuviImage* gout = new CuviImage(size,img->depth,1);
-//Uploading RGBA image to GPU
-gimg->upload(img->imageData,img->widthStep);
 //function call
-cuvi::colorOperations::RGBA2Gray(gimg,gout);
+cuvi::colorOperations::rgba2gray(gimg,gout);
 </syntaxhighlight>
 |}