Difference between revisions of "Function:Resize"

From CUVI Wiki
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__NOTOC__
__NOTOC__
Resizes input image to fit into the output image size. The function used linear interpolation
Re-sizes input image to fit into the output image size.
===Function===
===Function===
{|
{|
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CuviStatus resize(const CuviImage& src,
CuviStatus resize(const CuviImage& src,
                   CuviImage& dst,  
                   CuviImage& dst,  
                  CuviInterpolationType inter = CUVI_INTER_LINEAR,
                   const CuviStream& stream = CuviStream());
                   const CuviStream& stream = CuviStream());
</syntaxhighlight>
</syntaxhighlight>
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| CuviImage&
| CuviImage&
| Output Image
| Output Image
|-
| inter
| CuviInterpolationType
| Type of interpolation to use for re-sizing
|-
|-
| stream
| stream
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const Cuvi32s newHeight = static_cast<Cuvi32s>(gimg.height() * yScale);
const Cuvi32s newHeight = static_cast<Cuvi32s>(gimg.height() * yScale);


CuviImage gout(newWidth,newHeight,gimg.depth(),gimg.channels());
CuviImage gout(newWidth,newHeight,gimg.type());




//Resizing input image to fit output container  
//Re-sizing input image to fit output container using bicubic interpolation
cuvi::geometryTransforms::resize(gimg,gout);
cuvi::geometryTransforms::resize(gimg,gout, CUVI_INTER_CUBIC);


</syntaxhighlight>
</syntaxhighlight>
|}
|}

Revision as of 13:52, 13 June 2014

Re-sizes input image to fit into the output image size.

Function

CuviStatus resize(const CuviImage& src,
                  CuviImage& dst, 
                  CuviInterpolationType inter = CUVI_INTER_LINEAR,
                  const CuviStream& stream = CuviStream());


Parameters

Name Type Description
src const CuviImage& Input Image
dst CuviImage& Output Image
inter CuviInterpolationType Type of interpolation to use for re-sizing
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


Samples

Error creating thumbnail: Unable to save thumbnail to destination
Input Image (Width = W, Height = H)
Error creating thumbnail: Unable to save thumbnail to destination
Resized Image (width =0.78625*W, height= 0.78625*H)
Error creating thumbnail: Unable to save thumbnail to destination
Input Image (Width = W, Height = H)
Error creating thumbnail: Unable to save thumbnail to destination
Resized Image (width = 1.2*W, height= 1.75*H)


Example

CuviImage gimg = cuvi::io::loadImage(path);

const Cuvi32f xScale = 0.5f, yScale = 0.7f;

const Cuvi32s newWidth = static_cast<Cuvi32s>(gimg.width() * xScale);
const Cuvi32s newHeight = static_cast<Cuvi32s>(gimg.height() * yScale);

CuviImage gout(newWidth,newHeight,gimg.type());


//Re-sizing input image to fit output container using bicubic interpolation
cuvi::geometryTransforms::resize(gimg,gout, CUVI_INTER_CUBIC);
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