Difference between revisions of "Function:Rotate"

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__NOTOC__
__NOTOC__
Rotates an image about origin (0,0) or center
Rotates an image about a specified anchor point
===Function===
===Function===
{|
{|
|style="font-size:150%;"|
|style="font-size:100%;"|
<syntaxhighlight lang="cpp">
<syntaxhighlight lang="cpp">
CuviStatus rotate(CuviImage* srcImage,  
 
                   CuviImage* dstImage,
CuviStatus rotate(const CuviImage& src,
                   Cuvi32f angle,
                   CuviImage& dst,
                   CuviRotationType type = CUVI_ROTATE_CENTER,
                   const Cuvi32f angle,
                   CuviStream* stream = NULL);
                   const CuviPoint2D<int> anchor,
                  const CuviStream& stream = CuviStream());
 
CuviStatus rotate(const CuviImage& src,
                  CuviImage& dst,
                  const Cuvi32f angle,
                   const CuviPoint2D<int> anchor,
                  const CuviRect& roi,
                  const CuviStream& stream = CuviStream());
 
 
</syntaxhighlight>
</syntaxhighlight>
|}
|}


 
====Parameters====
===Parameters===
{|
 
|style="font-size:75%;"|
{|class="wikitable"
{|class="wikitable"
|-
|-
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! Description
! Description
|-
|-
| srcImage
| src
| CuviImage*
| const CuviImage&
| Input image
| Input image
|-
|-
| dstImage
| dst
| CuviImage*
| CuviImage&
| Output image
| Output image
|-
|-
| angle
| angle
| Cuvi32f
| const Cuvi32f
| Angle of rotation
| Angle of rotation
|-
|-
| type
| anchor
| CuviRotationType
| const CuviPoint2D<int>
| Supports:
| Center point of rotation
{|
|-
|CUVI_ROTATE_CENTER
| roi
|-
| const CuviRect&
|CUVI_ROTATE_ORIGIN
| Region of Interest
|}
|-
|-
| stream
| stream
| CuviStream*
| const CuviStream&
| GPU stream ID for execution
| GPU stream ID for execution


|}
|}
|}


 
====Image Type Support====
 
{|
===Image Type Support===
|style="font-size:75%;"|
 
{| class="wikitable"
{| class="wikitable"
|-
|-
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| 8uC3
| 8uC3
| 8uC3
| 8uC3
|-
| 16uC1
| 16uC1
|-
| 16uC3
| 16uC3
|-
| 32fC1
| 32fC1
|-
| 32fC3
| 32fC3
|}
|}
|}


===Sample===
===Sample===
[[File:rotate_in.png|none|frame|Input Image]]
<br/>
[[File:rotate_out.png|none|frame|Resultant Image]]
<br/>
====Code Example====
{|
{|
|-
|style="font-size:100%;"|
|[[File:Rotatein.jpg|frame|Input Image]]
<syntaxhighlight lang="cpp">
|[[File:RotateOutput_45deg.jpg|frame|Rotated at 45 degrees about center]]
 
|}


CuviImage src, dst;


CuviStatus s = CUVI_SUCCESS;
s = src.create(ipath, CUVI_LOAD_IMAGE_COLOR);


===Example===
if (s != CUVI_SUCCESS) printf("\nImage load Error: %d", s);
{|
|style="font-size:150%;"|
<syntaxhighlight lang="cpp">


CuviImage* gimg = new CuviImage(size,img->depth,img->nChannels);
//Define point of rotation within image or ROI
CuviImage* gout = new CuviImage(size,img->depth,img->nChannels);
CuviPoint2D<int> anchor(200, 0);


//Populating GPU input image
//Define (optional) ROI
gimg->upload(img->imageData,img->widthStep);
CuviRect roi(50, 100, 200, 150);


//Perform Rotation
s = cuvi::geometryTransforms::rotate(src, dst, 1.44, anchor, roi);


//function call
cuvi::io::saveImage(dst, opath);
cuvi::geometryTransforms::rotate(gimg, gout, 45.0f);


</syntaxhighlight>
</syntaxhighlight>
|}
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Latest revision as of 16:20, 18 October 2022

Rotates an image about a specified anchor point

Function

CuviStatus rotate(const CuviImage& src,
                  CuviImage& dst,
                  const Cuvi32f angle,
                  const CuviPoint2D<int> anchor,
                  const CuviStream& stream = CuviStream());

CuviStatus rotate(const CuviImage& src,
                  CuviImage& dst,
                  const Cuvi32f angle,
                  const CuviPoint2D<int> anchor,
                  const CuviRect& roi,
                  const CuviStream& stream = CuviStream());

Parameters

Name Type Description
src const CuviImage& Input image
dst CuviImage& Output image
angle const Cuvi32f Angle of rotation
anchor const CuviPoint2D<int> Center point of rotation
roi const CuviRect& Region of Interest
stream const CuviStream& GPU stream ID for execution

Image Type Support

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

Sample

Error creating thumbnail: Unable to save thumbnail to destination
Input Image


Error creating thumbnail: Unable to save thumbnail to destination
Resultant Image


Code Example

CuviImage src, dst;

CuviStatus s = CUVI_SUCCESS;
s = src.create(ipath, CUVI_LOAD_IMAGE_COLOR);

if (s != CUVI_SUCCESS)	printf("\nImage load Error: %d", s);

//Define point of rotation within image or ROI
CuviPoint2D<int> anchor(200, 0);

//Define (optional) ROI
CuviRect roi(50, 100, 200, 150);

//Perform Rotation
s = cuvi::geometryTransforms::rotate(src, dst, 1.44, anchor, roi);

cuvi::io::saveImage(dst, opath);
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