The OpenVX Specification  2b213f9
Reconstruction from a Laplacian Image Pyramid

Detailed Description

Reconstructs the original image from a Laplacian Image Pyramid.

This vision function reconstructs the image of the highest possible resolution from a Laplacian pyramid. The input image is added to the last level of the Laplacian pyramid $$L_{n-2}$$, the resulting image is upsampled to the resolution of the next pyramid level:

$I_{n-2} = upsample(input + L_{n-1})$

Correspondingly, for each pyramid level $$i$$, except for the first $$i=0$$ and the last $$i=n-1$$:

$I_{i-1} = upsample(I_i + L_i)$

Finally, the output image is:

$output = I_0 + L_0$

Functions

vx_node VX_API_CALL vxLaplacianReconstructNode (vx_graph graph, vx_pyramid laplacian, vx_image input, vx_image output)
[Graph] Reconstructs an image from a Laplacian Image pyramid. More...

vx_status VX_API_CALL vxuLaplacianReconstruct (vx_context context, vx_pyramid laplacian, vx_image input, vx_image output)
[Immediate] Reconstructs an image from a Laplacian Image pyramid. More...

Function Documentation

 vx_node VX_API_CALL vxLaplacianReconstructNode ( vx_graph graph, vx_pyramid laplacian, vx_image input, vx_image output )

[Graph] Reconstructs an image from a Laplacian Image pyramid.

Parameters
 [in] graph The reference to the graph. [in] laplacian The Laplacian pyramid with VX_DF_IMAGE_S16 format. [in] input The lowest resolution image of type VX_DF_IMAGE_S16 for the Laplacian pyramid [out] output The output image of type VX_DF_IMAGE_U8 with the highest possible resolution reconstructed from the Laplacian pyramid.
See Also
Object: Pyramid
Returns
vx_node.
Return values
 0 Node could not be created. * Node handle.
 vx_status VX_API_CALL vxuLaplacianReconstruct ( vx_context context, vx_pyramid laplacian, vx_image input, vx_image output )

[Immediate] Reconstructs an image from a Laplacian Image pyramid.

Parameters
 [in] context The reference to the overall context. [in] laplacian The Laplacian pyramid with VX_DF_IMAGE_S16 format. [in] input The lowest resolution image of type VX_DF_IMAGE_S16 for the Laplacian pyramid [out] output The output image of type VX_DF_IMAGE_U8 with the highest possible resolution reconstructed from the Laplacian pyramid.
See Also
Object: Pyramid
Returns
A vx_status enumeration.
Return values
 VX_SUCCESS Success. * An error occured. See vx_status_e